foo.cc: In function 'int main()':
foo.cc:6:8: 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:6:8: note: candidate: 'operator>(int, int)' <built-in>
6 | cin>a;
| ~~~^~
foo.cc:6:8: note: no known conversion for argument 1 from 'std::istream' {aka 'std::basic_istream<char>'} to 'int'
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from foo.cc:1:
/usr/include/c++/9/bits/regex.h:1081:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator>(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)'
1081 | operator>(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1081:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from foo.cc:1:
/usr/include/c++/9/bits/regex.h:1136:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator>(std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const std::__cxx11::sub_match<_BiIter>&)'
1136 | operator>(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1136:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from foo.cc:1:
/usr/include/c++/9/bits/regex.h:1210:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator>(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)'
1210 | operator>(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1210:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from foo.cc:1:
/usr/include/c++/9/bits/regex.h:1284:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>(const typename std::iterator_traits<_Iter>::value_type*, const std::__cxx11::sub_match<_BiIter>&)'
1284 | operator>(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1284:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from foo.cc:1:
/usr/include/c++/9/bits/regex.h:1358:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
1358 | operator>(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1358:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from foo.cc:1:
/usr/include/c++/9/bits/regex.h:1434:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>(const typename std::iterator_traits<_Iter>::value_type&, const std::__cxx11::sub_match<_BiIter>&)'
1434 | operator>(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1434:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from foo.cc:1:
/usr/include/c++/9/bits/regex.h:1512:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
1512 | operator>(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1512:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::__cxx11::sub_match<_BiIter>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/bits/stl_algobase.h:64,
from /usr/include/c++/9/bits/char_traits.h:39,
from /usr/include/c++/9/ios:40,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/bits/stl_pair.h:467:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator>(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)'
467 | operator>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
| ^~~~~~~~
/usr/include/c++/9/bits/stl_pair.h:467:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::pair<_T1, _T2>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/bits/stl_algobase.h:67,
from /usr/include/c++/9/bits/char_traits.h:39,
from /usr/include/c++/9/ios:40,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/bits/stl_iterator.h:343:5: note: candidate: 'template<class _Iterator> bool std::operator>(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)'
343 | operator>(const reverse_iterator<_Iterator>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_iterator.h:343:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::reverse_iterator<_Iterator>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/bits/stl_algobase.h:67,
from /usr/include/c++/9/bits/char_traits.h:39,
from /usr/include/c++/9/ios:40,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/bits/stl_iterator.h:381:5: note: candidate: 'template<class _IteratorL, class _IteratorR> bool std::operator>(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)'
381 | operator>(const reverse_iterator<_IteratorL>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_iterator.h:381:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::reverse_iterator<_Iterator>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/bits/stl_algobase.h:67,
from /usr/include/c++/9/bits/char_traits.h:39,
from /usr/include/c++/9/ios:40,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/bits/stl_iterator.h:1184:5: note: candidate: 'template<class _IteratorL, class _IteratorR> bool std::operator>(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)'
1184 | operator>(const move_iterator<_IteratorL>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_iterator.h:1184:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::move_iterator<_IteratorL>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/bits/stl_algobase.h:67,
from /usr/include/c++/9/bits/char_traits.h:39,
from /usr/include/c++/9/ios:40,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/bits/stl_iterator.h:1190:5: note: candidate: 'template<class _Iterator> bool std::operator>(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)'
1190 | operator>(const move_iterator<_Iterator>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_iterator.h:1190:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::move_iterator<_IteratorL>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/string:55,
from /usr/include/c++/9/bits/locale_classes.h:40,
from /usr/include/c++/9/bits/ios_base.h:41,
from /usr/include/c++/9/ios:42,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/bits/basic_string.h:6267:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
6267 | operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/basic_string.h:6267:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/string:55,
from /usr/include/c++/9/bits/locale_classes.h:40,
from /usr/include/c++/9/bits/ios_base.h:41,
from /usr/include/c++/9/ios:42,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/bits/basic_string.h:6280:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)'
6280 | operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/basic_string.h:6280:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/string:55,
from /usr/include/c++/9/bits/locale_classes.h:40,
from /usr/include/c++/9/bits/ios_base.h:41,
from /usr/include/c++/9/ios:42,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from foo.cc:1:
/usr/include/c++/9/bits/basic_string.h:6292:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const _CharT*, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
6292 | operator>(const _CharT* __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/basic_string.h:6292:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: mismatched types 'const _CharT*' and 'std::basic_istream<char>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/deque:67,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:68,
from foo.cc:1:
/usr/include/c++/9/bits/stl_deque.h:327:5: note: candidate: 'template<class _Tp, class _Ref, class _Ptr> bool std::operator>(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&)'
327 | operator>(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_deque.h:327:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::_Deque_iterator<_Tp, _Ref, _Ptr>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/deque:67,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:68,
from foo.cc:1:
/usr/include/c++/9/bits/stl_deque.h:334:5: note: candidate: 'template<class _Tp, class _RefL, class _PtrL, class _RefR, class _PtrR> bool std::operator>(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _RefR, _PtrR>&)'
334 | operator>(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_deque.h:334:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::_Deque_iterator<_Tp, _Ref, _Ptr>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/deque:67,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:68,
from foo.cc:1:
/usr/include/c++/9/bits/stl_deque.h:2345:5: note: candidate: 'template<class _Tp, class _Alloc> bool std::operator>(const std::deque<_Tp, _Alloc>&, const std::deque<_Tp, _Alloc>&)'
2345 | operator>(const deque<_Tp, _Alloc>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_deque.h:2345:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::deque<_Tp, _Alloc>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/tuple:39,
from /usr/include/c++/9/functional:54,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:71,
from foo.cc:1:
/usr/include/c++/9/array:270:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> bool std::operator>(const std::array<_Tp, _Nm>&, const std::array<_Tp, _Nm>&)'
270 | operator>(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
| ^~~~~~~~
/usr/include/c++/9/array:270:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::array<_Tp, _Nm>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/functional:54,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:71,
from foo.cc:1:
/usr/include/c++/9/tuple:1451:5: note: candidate: 'template<class ... _TElements, class ... _UElements> constexpr bool std::operator>(const std::tuple<_Tps ...>&, const std::tuple<_Elements ...>&)'
1451 | operator>(const tuple<_TElements...>& __t,
| ^~~~~~~~
/usr/include/c++/9/tuple:1451:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::tuple<_Tps ...>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/bits/locale_conv.h:41,
from /usr/include/c++/9/locale:43,
from /usr/include/c++/9/iomanip:43,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:72,
from foo.cc:1:
/usr/include/c++/9/bits/unique_ptr.h:790:5: note: candidate: 'template<class _Tp, class _Dp, class _Up, class _Ep> bool std::operator>(const std::unique_ptr<_Tp, _Dp>&, const std::unique_ptr<_Up, _Ep>&)'
790 | operator>(const unique_ptr<_Tp, _Dp>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/unique_ptr.h:790:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::unique_ptr<_Tp, _Dp>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/bits/locale_conv.h:41,
from /usr/include/c++/9/locale:43,
from /usr/include/c++/9/iomanip:43,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:72,
from foo.cc:1:
/usr/include/c++/9/bits/unique_ptr.h:796:5: note: candidate: 'template<class _Tp, class _Dp> bool std::operator>(const std::unique_ptr<_Tp, _Dp>&, std::nullptr_t)'
796 | operator>(const unique_ptr<_Tp, _Dp>& __x, nullptr_t)
| ^~~~~~~~
/usr/include/c++/9/bits/unique_ptr.h:796:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::unique_ptr<_Tp, _Dp>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/bits/locale_conv.h:41,
from /usr/include/c++/9/locale:43,
from /usr/include/c++/9/iomanip:43,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:72,
from foo.cc:1:
/usr/include/c++/9/bits/unique_ptr.h:802:5: note: candidate: 'template<class _Tp, class _Dp> bool std::operator>(std::nullptr_t, const std::unique_ptr<_Tp, _Dp>&)'
802 | operator>(nullptr_t, const unique_ptr<_Tp, _Dp>& __x)
| ^~~~~~~~
/usr/include/c++/9/bits/unique_ptr.h:802:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: mismatched types 'const std::unique_ptr<_Tp, _Dp>' and 'int'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/list:63,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:79,
from foo.cc:1:
/usr/include/c++/9/bits/stl_list.h:2038:5: note: candidate: 'template<class _Tp, class _Alloc> bool std::operator>(const std::__cxx11::list<_Tp, _Alloc>&, const std::__cxx11::list<_Tp, _Alloc>&)'
2038 | operator>(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
| ^~~~~~~~
/usr/include/c++/9/bits/stl_list.h:2038:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::__cxx11::list<_Tp, _Alloc>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/map:61,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:81,
from foo.cc:1:
/usr/include/c++/9/bits/stl_map.h:1486:5: note: candidate: 'template<class _Key, class _Tp, class _Compare, class _Alloc> bool std::operator>(const std::map<_Key, _Tp, _Compare, _Alloc>&, const std::map<_Key, _Tp, _Compare, _Alloc>&)'
1486 | operator>(const map<_Key, _Tp, _Compare, _Alloc>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_map.h:1486:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::map<_Key, _Tp, _Compare, _Alloc>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/map:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:81,
from foo.cc:1:
/usr/include/c++/9/bits/stl_multimap.h:1150:5: note: candidate: 'template<class _Key, class _Tp, class _Compare, class _Alloc> bool std::operator>(const std::multimap<_Key, _Tp, _Compare, _Alloc>&, const std::multimap<_Key, _Tp, _Compare, _Alloc>&)'
1150 | operator>(const multimap<_Key, _Tp, _Compare, _Alloc>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_multimap.h:1150:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::multimap<_Key, _Tp, _Compare, _Alloc>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/bits/shared_ptr.h:52,
from /usr/include/c++/9/memory:81,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:82,
from foo.cc:1:
/usr/include/c++/9/bits/shared_ptr_base.h:1487:5: note: candidate: 'template<class _Tp1, class _Tp2, __gnu_cxx::_Lock_policy _Lp> bool std::operator>(const std::__shared_ptr<_Tp1, _Lp>&, const std::__shared_ptr<_Tp2, _Lp>&)'
1487 | operator>(const __shared_ptr<_Tp1, _Lp>& __a,
| ^~~~~~~~
/usr/include/c++/9/bits/shared_ptr_base.h:1487:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::__shared_ptr<_Tp1, _Lp>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/bits/shared_ptr.h:52,
from /usr/include/c++/9/memory:81,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:82,
from foo.cc:1:
/usr/include/c++/9/bits/shared_ptr_base.h:1493:5: note: candidate: 'template<class _Tp, __gnu_cxx::_Lock_policy _Lp> bool std::operator>(const std::__shared_ptr<_Tp, _Lp>&, std::nullptr_t)'
1493 | operator>(const __shared_ptr<_Tp, _Lp>& __a, nullptr_t) noexcept
| ^~~~~~~~
/usr/include/c++/9/bits/shared_ptr_base.h:1493:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::__shared_ptr<_Tp, _Lp>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/bits/shared_ptr.h:52,
from /usr/include/c++/9/memory:81,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:82,
from foo.cc:1:
/usr/include/c++/9/bits/shared_ptr_base.h:1498:5: note: candidate: 'template<class _Tp, __gnu_cxx::_Lock_policy _Lp> bool std::operator>(std::nullptr_t, const std::__shared_ptr<_Tp, _Lp>&)'
1498 | operator>(nullptr_t, const __shared_ptr<_Tp, _Lp>& __a) noexcept
| ^~~~~~~~
/usr/include/c++/9/bits/shared_ptr_base.h:1498:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: mismatched types 'const std::__shared_ptr<_Tp, _Lp>' and 'int'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/memory:81,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:82,
from foo.cc:1:
/usr/include/c++/9/bits/shared_ptr.h:454:5: note: candidate: 'template<class _Tp, class _Up> bool std::operator>(const std::shared_ptr<_Tp>&, const std::shared_ptr<_Tp>&)'
454 | operator>(const shared_ptr<_Tp>& __a, const shared_ptr<_Up>& __b) noexcept
| ^~~~~~~~
/usr/include/c++/9/bits/shared_ptr.h:454:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::shared_ptr<_Tp>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/memory:81,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:82,
from foo.cc:1:
/usr/include/c++/9/bits/shared_ptr.h:459:5: note: candidate: 'template<class _Tp> bool std::operator>(const std::shared_ptr<_Tp>&, std::nullptr_t)'
459 | operator>(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
| ^~~~~~~~
/usr/include/c++/9/bits/shared_ptr.h:459:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::shared_ptr<_Tp>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/memory:81,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:82,
from foo.cc:1:
/usr/include/c++/9/bits/shared_ptr.h:464:5: note: candidate: 'template<class _Tp> bool std::operator>(std::nullptr_t, const std::shared_ptr<_Tp>&)'
464 | operator>(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
| ^~~~~~~~
/usr/include/c++/9/bits/shared_ptr.h:464:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: mismatched types 'const std::shared_ptr<_Tp>' and 'int'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/vector:67,
from /usr/include/c++/9/queue:61,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:86,
from foo.cc:1:
/usr/include/c++/9/bits/stl_vector.h:1918:5: note: candidate: 'template<class _Tp, class _Alloc> bool std::operator>(const std::vector<_Tp, _Alloc>&, const std::vector<_Tp, _Alloc>&)'
1918 | operator>(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
| ^~~~~~~~
/usr/include/c++/9/bits/stl_vector.h:1918:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::vector<_Tp, _Alloc>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/queue:64,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:86,
from foo.cc:1:
/usr/include/c++/9/bits/stl_queue.h:368:5: note: candidate: 'template<class _Tp, class _Seq> bool std::operator>(const std::queue<_Tp, _Seq>&, const std::queue<_Tp, _Seq>&)'
368 | operator>(const queue<_Tp, _Seq>& __x, const queue<_Tp, _Seq>& __y)
| ^~~~~~~~
/usr/include/c++/9/bits/stl_queue.h:368:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::queue<_Tp, _Seq>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/set:61,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:87,
from foo.cc:1:
/usr/include/c++/9/bits/stl_set.h:1010:5: note: candidate: 'template<class _Key, class _Compare, class _Alloc> bool std::operator>(const std::set<_Key, _Compare, _Alloc>&, const std::set<_Key, _Compare, _Alloc>&)'
1010 | operator>(const set<_Key, _Compare, _Alloc>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_set.h:1010:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::set<_Key, _Compare, _Alloc>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/set:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:87,
from foo.cc:1:
/usr/include/c++/9/bits/stl_multiset.h:995:5: note: candidate: 'template<class _Key, class _Compare, class _Alloc> bool std::operator>(const std::multiset<_Key, _Compare, _Alloc>&, const std::multiset<_Key, _Compare, _Alloc>&)'
995 | operator>(const multiset<_Key,_Compare,_Alloc>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_multiset.h:995:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::multiset<_Key, _Compare, _Alloc>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/stack:61,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:89,
from foo.cc:1:
/usr/include/c++/9/bits/stl_stack.h:343:5: note: candidate: 'template<class _Tp, class _Seq> bool std::operator>(const std::stack<_Tp, _Seq>&, const std::stack<_Tp, _Seq>&)'
343 | operator>(const stack<_Tp, _Seq>& __x, const stack<_Tp, _Seq>& __y)
| ^~~~~~~~
/usr/include/c++/9/bits/stl_stack.h:343:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::stack<_Tp, _Seq>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/bits/valarray_after.h:420:5: note: candidate: 'template<class _Dom1, class _Dom2> std::_Expr<std::__detail::_BinClos<std::__greater, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__greater, typename _Dom1::value_type>::result_type> std::operator>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)'
420 | _DEFINE_EXPR_BINARY_OPERATOR(>, __greater)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/bits/valarray_after.h:420:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/bits/valarray_after.h:420:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__greater, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__greater, typename _Dom1::value_type>::result_type> std::operator>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)'
420 | _DEFINE_EXPR_BINARY_OPERATOR(>, __greater)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/bits/valarray_after.h:420:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/bits/valarray_after.h:420:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__greater, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__greater, typename _Dom1::value_type>::result_type> std::operator>(const typename _Dom::value_type&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)'
420 | _DEFINE_EXPR_BINARY_OPERATOR(>, __greater)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/bits/valarray_after.h:420:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/bits/valarray_after.h:420:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__greater, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__greater, typename _Dom1::value_type>::result_type> std::operator>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::valarray<typename _Dom::value_type>&)'
420 | _DEFINE_EXPR_BINARY_OPERATOR(>, __greater)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/bits/valarray_after.h:420:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/valarray:603,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/bits/valarray_after.h:420:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__greater, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__greater, typename _Dom1::value_type>::result_type> std::operator>(const std::valarray<typename _Dom::value_type>&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)'
420 | _DEFINE_EXPR_BINARY_OPERATOR(>, __greater)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/bits/valarray_after.h:420:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
6 | cin>a;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/valarray:1200:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__greater, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__greater, _Tp>::result_type> std::operator>(const std::valarray<_Tp>&, const std::valarray<_Tp>&)'
1200 | _DEFINE_BINARY_OPERATOR(>, __greater)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/valarray:1200:1: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::valarray<_Tp>'
6 | cin>a;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/valarray:1200:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__greater, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__greater, _Tp>::result_type> std::operator>(const std::valarray<_Tp>&, const typename std::valarray<_Tp>::value_type&)'
1200 | _DEFINE_BINARY_OPERATOR(>, __greater)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/valarray:1200:1: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::valarray<_Tp>'
6 | cin>a;
| ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
from foo.cc:1:
/usr/include/c++/9/valarray:1200:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__greater, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__greater, _Tp>::result_type> std::operator>(const typename std::valarray<_Tp>::value_type&, const std::valarray<_Tp>&)'
1200 | _DEFINE_BINARY_OPERATOR(>, __greater)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/9/valarray:1200:1: note: template argument deduction/substitution failed:
foo.cc:6:9: note: mismatched types 'const std::valarray<_Tp>' and 'int'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/forward_list:38,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:104,
from foo.cc:1:
/usr/include/c++/9/bits/forward_list.h:1458:5: note: candidate: 'template<class _Tp, class _Alloc> bool std::operator>(const std::forward_list<_Tp, _Alloc>&, const std::forward_list<_Tp, _Alloc>&)'
1458 | operator>(const forward_list<_Tp, _Alloc>& __lx,
| ^~~~~~~~
/usr/include/c++/9/bits/forward_list.h:1458:5: note: template argument deduction/substitution failed:
foo.cc:6:9: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'const std::forward_list<_Tp, _Alloc>'
6 | cin>a;
| ^
In file included from /usr/include/c++/9/future:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:105,
from foo.cc:1:
/usr/include/c++/9/thread:302:3: note: candidate: 'bool std::operator>(std::thread::id, std::thread::id)'
302 | operator>(thread::id __x, thread::id __y) noexcept
| ^~~~~~~~
/usr/include/c++/9/thread:302:24: note: no known conversion for argument 1 from 'std::istream' {aka 'std::basic_istream<char>'} to 'std::thread::id'
302 | operator>(thread::id __x, thread::id __y) noexcept
| ~~~~~~~~~~~^~~
foo.cc:12:11: error: lvalue required as left operand of assignment
12 | if(b+c+d=a)
| ^
yangzichen LV 7
undefined
