foo.cc: In function ‘int main()’:
foo.cc:6:12: error: no match for ‘operator<<’ (operand types are ‘std::istream’ {aka ‘std::basic_istream<char>’} and ‘int’)
6 | cin<<a;
| ~~~^~~
| | |
| | int
| std::istream {aka std::basic_istream<char>}
foo.cc:6:12: note: candidate: ‘operator<<(int, int)’ (built-in)
6 | cin<<a;
| ~~~^~~
foo.cc:6:12: note: no known conversion for argument 1 from ‘std::istream’ {aka ‘std::basic_istream<char>’} to ‘int’
In file included from /nix/gcc-13.2.0/include/c++/13.2.0/regex:68,
from stdc++.h:181:
/nix/gcc-13.2.0/include/c++/13.2.0/bits/regex.h:1715:5: note: candidate: ‘template<class _Ch_type, class _Ch_traits, class _Bi_iter> std::basic_ostream<_CharT, _Traits>& std::__cxx11::operator<<(std::basic_ostream<_CharT, _Traits>&, const sub_match<_Bi_iter>&)’
1715 | operator<<(basic_ostream<_Ch_type, _Ch_traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/regex.h:1715:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
In file included from /nix/gcc-13.2.0/include/c++/13.2.0/string:54,
from /nix/gcc-13.2.0/include/c++/13.2.0/bitset:52,
from stdc++.h:52:
/nix/gcc-13.2.0/include/c++/13.2.0/bits/basic_string.h:4020:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’
4020 | operator<<(basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/basic_string.h:4020:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bitset:1683:5: note: candidate: ‘template<class _CharT, class _Traits, long unsigned int _Nb> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const bitset<_Nb>&)’
1683 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bitset:1683:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
In file included from /nix/gcc-13.2.0/include/c++/13.2.0/bits/ios_base.h:46,
from /nix/gcc-13.2.0/include/c++/13.2.0/streambuf:43,
from /nix/gcc-13.2.0/include/c++/13.2.0/bits/streambuf_iterator.h:35,
from /nix/gcc-13.2.0/include/c++/13.2.0/iterator:66,
from stdc++.h:54:
/nix/gcc-13.2.0/include/c++/13.2.0/system_error:339:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const error_code&)’
339 | operator<<(basic_ostream<_CharT, _Traits>& __os, const error_code& __e)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/system_error:339:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
In file included from /nix/gcc-13.2.0/include/c++/13.2.0/memory:80,
from stdc++.h:56:
/nix/gcc-13.2.0/include/c++/13.2.0/bits/shared_ptr.h:70:5: note: candidate: ‘template<class _Ch, class _Tr, class _Tp, __gnu_cxx::_Lock_policy _Lp> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const __shared_ptr<_Tp, _Lp>&)’
70 | operator<<(std::basic_ostream<_Ch, _Tr>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/shared_ptr.h:70:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
In file included from /nix/gcc-13.2.0/include/c++/13.2.0/istream:41,
from /nix/gcc-13.2.0/include/c++/13.2.0/sstream:40,
from /nix/gcc-13.2.0/include/c++/13.2.0/complex:45,
from /nix/gcc-13.2.0/include/c++/13.2.0/ccomplex:39,
from stdc++.h:127:
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:554:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, _CharT)’
554 | operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:554:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:564:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, char)’
564 | operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:564:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:570:5: note: candidate: ‘template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, char)’
570 | operator<<(basic_ostream<char, _Traits>& __out, char __c)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:570:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<char, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:581:5: note: candidate: ‘template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, signed char)’
581 | operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:581:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<char, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:586:5: note: candidate: ‘template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, unsigned char)’
586 | operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:586:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<char, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:645:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const _CharT*)’
645 | operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:645:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
In file included from /nix/gcc-13.2.0/include/c++/13.2.0/ostream:880:
/nix/gcc-13.2.0/include/c++/13.2.0/bits/ostream.tcc:307:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const char*)’
307 | operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/ostream.tcc:307:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:662:5: note: candidate: ‘template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, const char*)’
662 | operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:662:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<char, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:675:5: note: candidate: ‘template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, const signed char*)’
675 | operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:675:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<char, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:680:5: note: candidate: ‘template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, const unsigned char*)’
680 | operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:680:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<char, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:801:5: note: candidate: ‘template<class _Ostream, class _Tp> _Ostream&& std::operator<<(_Ostream&&, const _Tp&)’
801 | operator<<(_Ostream&& __os, const _Tp& __x)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:801:5: note: template argument deduction/substitution failed:
/nix/gcc-13.2.0/include/c++/13.2.0/ostream: In substitution of ‘template<class _Ostream, class _Tp> _Ostream&& std::operator<<(_Ostream&&, const _Tp&) [with _Ostream = std::basic_istream<char>&; _Tp = int]’:
foo.cc:6:7: required from here
/nix/gcc-13.2.0/include/c++/13.2.0/ostream:801:5: error: no type named ‘type’ in ‘struct std::enable_if<false, void>’
/nix/gcc-13.2.0/include/c++/13.2.0/complex:558:5: note: candidate: ‘template<class _Tp, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const complex<_Tp>&)’
558 | operator<<(basic_ostream<_CharT, _Traits>& __os, const complex<_Tp>& __x)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/complex:558:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
In file included from stdc++.h:143:
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:81:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, _Resetiosflags)’
81 | operator<<(basic_ostream<_CharT, _Traits>& __os, _Resetiosflags __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:81:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:111:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, _Setiosflags)’
111 | operator<<(basic_ostream<_CharT, _Traits>& __os, _Setiosflags __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:111:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:145:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, _Setbase)’
145 | operator<<(basic_ostream<_CharT, _Traits>& __os, _Setbase __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:145:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:180:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, _Setfill<_CharT>)’
180 | operator<<(basic_ostream<_CharT, _Traits>& __os, _Setfill<_CharT> __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:180:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:210:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, _Setprecision)’
210 | operator<<(basic_ostream<_CharT, _Traits>& __os, _Setprecision __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:210:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:240:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, _Setw)’
240 | operator<<(basic_ostream<_CharT, _Traits>& __os, _Setw __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:240:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:313:5: note: candidate: ‘template<class _CharT, class _Traits, class _MoneyT> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, _Put_money<_MoneyT>)’
313 | operator<<(basic_ostream<_CharT, _Traits>& __os, _Put_money<_MoneyT> __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:313:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:365:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, _Put_time<_CharT>)’
365 | operator<<(basic_ostream<_CharT, _Traits>& __os, _Put_time<_CharT> __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:365:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
In file included from /nix/gcc-13.2.0/include/c++/13.2.0/valarray:605,
from stdc++.h:166:
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:413:5: note: candidate: ‘template<class _Dom1, class _Dom2> std::_Expr<std::__detail::_BinClos<std::__shift_left, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__shift_left, typename _Dom1::value_type>::result_type> std::operator<<(const _Expr<_Dom1, typename _Dom1::value_type>&, const _Expr<_Dom2, typename _Dom2::value_type>&)’
413 | _DEFINE_EXPR_BINARY_OPERATOR(<<, struct std::__shift_left)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:413:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:413:5: note: candidate: ‘template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_left, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_left, typename _Dom1::value_type>::result_type> std::operator<<(const _Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)’
413 | _DEFINE_EXPR_BINARY_OPERATOR(<<, struct std::__shift_left)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:413:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:413:5: note: candidate: ‘template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_left, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_left, typename _Dom1::value_type>::result_type> std::operator<<(const typename _Dom::value_type&, const _Expr<_Dom1, typename _Dom1::value_type>&)’
413 | _DEFINE_EXPR_BINARY_OPERATOR(<<, struct std::__shift_left)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:413:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: mismatched types ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’ and ‘int’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:413:5: note: candidate: ‘template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_left, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_left, typename _Dom1::value_type>::result_type> std::operator<<(const _Expr<_Dom1, typename _Dom1::value_type>&, const valarray<typename _Dom::value_type>&)’
413 | _DEFINE_EXPR_BINARY_OPERATOR(<<, struct std::__shift_left)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:413:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:413:5: note: candidate: ‘template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_left, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_left, typename _Dom1::value_type>::result_type> std::operator<<(const valarray<typename _Dom::value_type>&, const _Expr<_Dom1, typename _Dom1::value_type>&)’
413 | _DEFINE_EXPR_BINARY_OPERATOR(<<, struct std::__shift_left)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:413:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: mismatched types ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’ and ‘int’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/valarray:1198:1: note: candidate: ‘template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__shift_left, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_left, _Tp>::result_type> std::operator<<(const valarray<_Tp>&, const valarray<_Tp>&)’
1198 | _DEFINE_BINARY_OPERATOR(<<, __shift_left)
| ^~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/valarray:1198:1: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::valarray<_Tp>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/valarray:1198:1: note: candidate: ‘template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__shift_left, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__shift_left, _Tp>::result_type> std::operator<<(const valarray<_Tp>&, const typename valarray<_Tp>::value_type&)’
1198 | _DEFINE_BINARY_OPERATOR(<<, __shift_left)
| ^~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/valarray:1198:1: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::valarray<_Tp>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/valarray:1198:1: note: candidate: ‘template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__shift_left, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_left, _Tp>::result_type> std::operator<<(const typename valarray<_Tp>::value_type&, const valarray<_Tp>&)’
1198 | _DEFINE_BINARY_OPERATOR(<<, __shift_left)
| ^~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/valarray:1198:1: note: template argument deduction/substitution failed:
foo.cc:6:14: note: mismatched types ‘const std::valarray<_Tp>’ and ‘int’
6 | cin<<a;
| ^
In file included from /nix/gcc-13.2.0/include/c++/13.2.0/random:51,
from stdc++.h:179:
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.h:1341:5: note: candidate: ‘template<class _RandomNumberEngine, long unsigned int __w, class _UIntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const independent_bits_engine<_RandomNumberEngine, __w, _UIntType>&)’
1341 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.h:1341:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
In file included from /nix/gcc-13.2.0/include/c++/13.2.0/random:53:
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:907:5: note: candidate: ‘template<class _IntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const uniform_int_distribution<_IntType>&)’
907 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:907:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:965:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const uniform_real_distribution<_IntType>&)’
965 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:965:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2142:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const cauchy_distribution<_RealType>&)’
2142 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2142:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1026:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const bernoulli_distribution&)’
1026 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1026:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1107:5: note: candidate: ‘template<class _IntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const geometric_distribution<_IntType>&)’
1107 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1107:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1759:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const exponential_distribution<_RealType>&)’
1759 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1759:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2536:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const weibull_distribution<_RealType>&)’
2536 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2536:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2610:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const extreme_value_distribution<_RealType>&)’
2610 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2610:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:156:5: note: candidate: ‘template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const linear_congruential_engine<_UIntType, __a, __c, __m>&)’
156 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:156:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:477:5: note: candidate: ‘template<class _UIntType1, long unsigned int __w1, long unsigned int __n1, long unsigned int __m1, long unsigned int __r1, _UIntType1 __a1, long unsigned int __u1, _UIntType1 __d1, long unsigned int __s1, _UIntType1 __b1, long unsigned int __t1, _UIntType1 __c1, long unsigned int __l1, _UIntType1 __f1, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>&)’
477 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:477:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:632:5: note: candidate: ‘template<class _UIntType, long unsigned int __w, long unsigned int __s, long unsigned int __r, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const subtract_with_carry_engine<_UIntType, __w, __s, __r>&)’
632 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:632:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:701:5: note: candidate: ‘template<class _RandomNumberEngine, long unsigned int __p, long unsigned int __r, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const discard_block_engine<_RandomNumberEngine, __p, __r>&)’
701 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:701:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:863:5: note: candidate: ‘template<class _RandomNumberEngine, long unsigned int __k, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const shuffle_order_engine<_RandomNumberEngine, __k>&)’
863 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:863:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1221:5: note: candidate: ‘template<class _IntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const negative_binomial_distribution<_IntType>&)’
1221 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1221:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1431:5: note: candidate: ‘template<class _IntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const poisson_distribution<_IntType>&)’
1431 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1431:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1697:5: note: candidate: ‘template<class _IntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const binomial_distribution<_IntType>&)’
1697 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1697:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1917:5: note: candidate: ‘template<class _RealType1, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const normal_distribution<_RealType>&)’
1917 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1917:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1984:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const lognormal_distribution<_RealType>&)’
1984 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1984:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2056:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const chi_squared_distribution<_RealType>&)’
2056 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2056:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2217:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const fisher_f_distribution<_RealType>&)’
2217 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2217:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2291:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const student_t_distribution<_RealType>&)’
2291 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2291:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2460:5: note: candidate: ‘template<class _RealType1, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const gamma_distribution<_RealType>&)’
2460 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2460:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2746:5: note: candidate: ‘template<class _IntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const discrete_distribution<_IntType>&)’
2746 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2746:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2968:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const piecewise_constant_distribution<_RealType>&)’
2968 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2968:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:3174:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const piecewise_linear_distribution<_RealType>&)’
3174 | operator<<(std::basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:3174:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
In file included from stdc++.h:184:
/nix/gcc-13.2.0/include/c++/13.2.0/thread:97:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, thread::id)’
97 | operator<<(basic_ostream<_CharT, _Traits>& __out, thread::id __id)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/thread:97:5: note: template argument deduction/substitution failed:
foo.cc:6:14: note: ‘std::istream’ {aka ‘std::basic_istream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
6 | cin<<a;
| ^
foo.cc:7:13: error: no match for ‘operator>>’ (operand types are ‘std::ostream’ {aka ‘std::basic_ostream<char>’} and ‘int’)
7 | cout>>a*a*a;
| ~~~~^~~~~~~
| | |
| | int
| std::ostream {aka std::basic_ostream<char>}
foo.cc:7:13: note: candidate: ‘operator>>(int, int)’ (built-in)
7 | cout>>a*a*a;
| ~~~~^~~~~~~
foo.cc:7:13: note: no known conversion for argument 1 from ‘std::ostream’ {aka ‘std::basic_ostream<char>’} to ‘int’
In file included from /nix/gcc-13.2.0/include/c++/13.2.0/string:55:
/nix/gcc-13.2.0/include/c++/13.2.0/bits/basic_string.tcc:821:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’
821 | operator>>(basic_istream<_CharT, _Traits>& __in,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/basic_string.tcc:821:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bitset:1593:5: note: candidate: ‘template<class _CharT, class _Traits, long unsigned int _Nb> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, bitset<_Nb>&)’
1593 | operator>>(std::basic_istream<_CharT, _Traits>& __is, bitset<_Nb>& __x)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bitset:1593:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
In file included from /nix/gcc-13.2.0/include/c++/13.2.0/istream:1106:
/nix/gcc-13.2.0/include/c++/13.2.0/bits/istream.tcc:975:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT&)’
975 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/istream.tcc:975:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/istream:846:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char&)’
846 | operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/istream:846:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<char, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/istream:851:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char&)’
851 | operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/istream:851:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<char, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/istream:893:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT*)’
893 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/istream:893:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/istream:936:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char*)’
936 | operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/istream:936:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<char, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/istream:942:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char*)’
942 | operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/istream:942:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<char, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/istream:1096:5: note: candidate: ‘template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&)’
1096 | operator>>(_Istream&& __is, _Tp&& __x)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/istream:1096:5: note: template argument deduction/substitution failed:
/nix/gcc-13.2.0/include/c++/13.2.0/istream: In substitution of ‘template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&) [with _Istream = std::basic_ostream<char>&; _Tp = int]’:
foo.cc:7:12: required from here
/nix/gcc-13.2.0/include/c++/13.2.0/istream:1096:5: error: no type named ‘type’ in ‘struct std::enable_if<false, void>’
/nix/gcc-13.2.0/include/c++/13.2.0/complex:504:5: note: candidate: ‘template<class _Tp, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, complex<_Tp>&)’
504 | operator>>(basic_istream<_CharT, _Traits>& __is, complex<_Tp>& __x)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/complex:504:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:73:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _Resetiosflags)’
73 | operator>>(basic_istream<_CharT, _Traits>& __is, _Resetiosflags __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:73:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:103:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _Setiosflags)’
103 | operator>>(basic_istream<_CharT, _Traits>& __is, _Setiosflags __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:103:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:134:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _Setbase)’
134 | operator>>(basic_istream<_CharT, _Traits>& __is, _Setbase __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:134:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:172:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _Setfill<_CharT>)’
172 | operator>>(basic_istream<_CharT, _Traits>& __is, _Setfill<_CharT> __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:172:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:202:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _Setprecision)’
202 | operator>>(basic_istream<_CharT, _Traits>& __is, _Setprecision __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:202:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:232:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _Setw)’
232 | operator>>(basic_istream<_CharT, _Traits>& __is, _Setw __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:232:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:266:5: note: candidate: ‘template<class _CharT, class _Traits, class _MoneyT> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _Get_money<_MoneyT>)’
266 | operator>>(basic_istream<_CharT, _Traits>& __is, _Get_money<_MoneyT> __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:266:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:420:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _Get_time<_CharT>)’
420 | operator>>(basic_istream<_CharT, _Traits>& __is, _Get_time<_CharT> __f)
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/iomanip:420:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:414:5: note: candidate: ‘template<class _Dom1, class _Dom2> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const _Expr<_Dom1, typename _Dom1::value_type>&, const _Expr<_Dom2, typename _Dom2::value_type>&)’
414 | _DEFINE_EXPR_BINARY_OPERATOR(>>, struct std::__shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:414:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:414:5: note: candidate: ‘template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const _Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)’
414 | _DEFINE_EXPR_BINARY_OPERATOR(>>, struct std::__shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:414:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:414:5: note: candidate: ‘template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const typename _Dom::value_type&, const _Expr<_Dom1, typename _Dom1::value_type>&)’
414 | _DEFINE_EXPR_BINARY_OPERATOR(>>, struct std::__shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:414:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: mismatched types ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’ and ‘int’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:414:5: note: candidate: ‘template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const _Expr<_Dom1, typename _Dom1::value_type>&, const valarray<typename _Dom::value_type>&)’
414 | _DEFINE_EXPR_BINARY_OPERATOR(>>, struct std::__shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:414:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:414:5: note: candidate: ‘template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const valarray<typename _Dom::value_type>&, const _Expr<_Dom1, typename _Dom1::value_type>&)’
414 | _DEFINE_EXPR_BINARY_OPERATOR(>>, struct std::__shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/valarray_after.h:414:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: mismatched types ‘const std::_Expr<_Dom1, typename _Dom1::value_type>’ and ‘int’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/valarray:1199:1: note: candidate: ‘template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const valarray<_Tp>&, const valarray<_Tp>&)’
1199 | _DEFINE_BINARY_OPERATOR(>>, __shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/valarray:1199:1: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘const std::valarray<_Tp>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/valarray:1199:1: note: candidate: ‘template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const valarray<_Tp>&, const typename valarray<_Tp>::value_type&)’
1199 | _DEFINE_BINARY_OPERATOR(>>, __shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/valarray:1199:1: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘const std::valarray<_Tp>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/valarray:1199:1: note: candidate: ‘template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__shift_right, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const typename valarray<_Tp>::value_type&, const valarray<_Tp>&)’
1199 | _DEFINE_BINARY_OPERATOR(>>, __shift_right)
| ^~~~~~~~~~~~~~~~~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/valarray:1199:1: note: template argument deduction/substitution failed:
foo.cc:7:19: note: mismatched types ‘const std::valarray<_Tp>’ and ‘int’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:927:5: note: candidate: ‘template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, uniform_int_distribution<_IntType>&)’
927 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:927:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:988:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, uniform_real_distribution<_IntType>&)’
988 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:988:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2165:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, cauchy_distribution<_RealType>&)’
2165 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2165:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.h:3830:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, bernoulli_distribution&)’
3830 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.h:3830:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1130:5: note: candidate: ‘template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, geometric_distribution<_IntType>&)’
1130 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1130:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1781:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, exponential_distribution<_RealType>&)’
1781 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1781:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2559:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, weibull_distribution<_RealType>&)’
2559 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2559:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2633:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, extreme_value_distribution<_RealType>&)’
2633 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2633:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:177:5: note: candidate: ‘template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, linear_congruential_engine<_UIntType, __a, __c, __m>&)’
177 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:177:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:504:5: note: candidate: ‘template<class _UIntType1, long unsigned int __w1, long unsigned int __n1, long unsigned int __m1, long unsigned int __r1, _UIntType1 __a1, long unsigned int __u1, _UIntType1 __d1, long unsigned int __s1, _UIntType1 __b1, long unsigned int __t1, _UIntType1 __c1, long unsigned int __l1, _UIntType1 __f1, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>&)’
504 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:504:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:656:5: note: candidate: ‘template<class _UIntType, long unsigned int __w, long unsigned int __s, long unsigned int __r, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, subtract_with_carry_engine<_UIntType, __w, __s, __r>&)’
656 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:656:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:723:5: note: candidate: ‘template<class _RandomNumberEngine, long unsigned int __p, long unsigned int __r, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, discard_block_engine<_RandomNumberEngine, __p, __r>&)’
723 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:723:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:887:5: note: candidate: ‘template<class _RandomNumberEngine, long unsigned int __k, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, shuffle_order_engine<_RandomNumberEngine, __k>&)’
887 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:887:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1245:5: note: candidate: ‘template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, negative_binomial_distribution<_IntType>&)’
1245 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1245:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1455:5: note: candidate: ‘template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, poisson_distribution<_IntType>&)’
1455 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1455:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1722:5: note: candidate: ‘template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, binomial_distribution<_IntType>&)’
1722 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1722:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1943:5: note: candidate: ‘template<class _RealType1, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, normal_distribution<_RealType>&)’
1943 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:1943:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2008:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, lognormal_distribution<_RealType>&)’
2008 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2008:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2079:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, chi_squared_distribution<_RealType>&)’
2079 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2079:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2241:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, fisher_f_distribution<_RealType>&)’
2241 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2241:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2314:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, student_t_distribution<_RealType>&)’
2314 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2314:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2484:5: note: candidate: ‘template<class _RealType1, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, gamma_distribution<_RealType>&)’
2484 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2484:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2792:5: note: candidate: ‘template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, discrete_distribution<_IntType>&)’
2792 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2792:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2999:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, piecewise_constant_distribution<_RealType>&)’
2999 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:2999:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:3205:5: note: candidate: ‘template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, piecewise_linear_distribution<_RealType>&)’
3205 | operator>>(std::basic_istream<_CharT, _Traits>& __is,
| ^~~~~~~~
/nix/gcc-13.2.0/include/c++/13.2.0/bits/random.tcc:3205:5: note: template argument deduction/substitution failed:
foo.cc:7:19: note: ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘std::basic_istream<_CharT, _Traits>’
7 | cout>>a*a*a;
| ^
240220zj韩梦晞 (230905cj韩梦晞) LV 6
undefined
