/in/foo.cc: In function 'int main()':
/in/foo.cc:8:15: error: no matching function for call to 'std::__cxx11::basic_string<char>::basic_string(int&)'
    8 |     a=string(t);
      |               ^
In file included from /usr/include/c++/12/string:53,
                 from /usr/include/c++/12/bits/locale_classes.h:40,
                 from /usr/include/c++/12/bits/ios_base.h:41,
                 from /usr/include/c++/12/ios:42,
                 from /usr/include/c++/12/ostream:38,
                 from /usr/include/c++/12/iostream:39,
                 from /in/foo.cc:1:
/usr/include/c++/12/bits/basic_string.h:751:9: note: candidate: 'template<class _InputIterator, class> std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(_InputIterator, _InputIterator, const _Alloc&) [with <template-parameter-2-2> = _InputIterator; _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
  751 |         basic_string(_InputIterator __beg, _InputIterator __end,
      |         ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:751:9: note:   template argument deduction/substitution failed:
/in/foo.cc:8:15: note:   candidate expects 3 arguments, 1 provided
    8 |     a=string(t);
      |               ^
/usr/include/c++/12/bits/basic_string.h:708:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&, const _Alloc&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
  708 |       basic_string(basic_string&& __str, const _Alloc& __a)
      |       ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:708:7: note:   candidate expects 2 arguments, 1 provided
/usr/include/c++/12/bits/basic_string.h:703:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _Alloc&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
  703 |       basic_string(const basic_string& __str, const _Alloc& __a)
      |       ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:703:7: note:   candidate expects 2 arguments, 1 provided
/usr/include/c++/12/bits/basic_string.h:698:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(std::initializer_list<_Tp>, const _Alloc&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
  698 |       basic_string(initializer_list<_CharT> __l, const _Alloc& __a = _Alloc())
      |       ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:698:45: note:   no known conversion for argument 1 from 'int' to 'std::initializer_list<char>'
  698 |       basic_string(initializer_list<_CharT> __l, const _Alloc& __a = _Alloc())
      |                    ~~~~~~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/12/bits/basic_string.h:670:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
  670 |       basic_string(basic_string&& __str) noexcept
      |       ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:670:35: note:   no known conversion for argument 1 from 'int' to 'std::__cxx11::basic_string<char>&&'
  670 |       basic_string(basic_string&& __str) noexcept
      |                    ~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/12/bits/basic_string.h:657:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(size_type, _CharT, const _Alloc&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
  657 |       basic_string(size_type __n, _CharT __c, const _Alloc& __a = _Alloc())
      |       ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:657:7: note:   candidate expects 3 arguments, 1 provided
/usr/include/c++/12/bits/basic_string.h:634:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(const _CharT*, const _Alloc&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]' (near match)
  634 |       basic_string(const _CharT* __s, const _Alloc& __a = _Alloc())
      |       ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:634:7: note:   conversion of argument 1 would be ill-formed:
/in/foo.cc:8:14: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
    8 |     a=string(t);
      |              ^
      |              |
      |              int
/usr/include/c++/12/bits/basic_string.h:612:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(const _CharT*, size_type, const _Alloc&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
  612 |       basic_string(const _CharT* __s, size_type __n,
      |       ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:612:7: note:   candidate expects 3 arguments, 1 provided
/usr/include/c++/12/bits/basic_string.h:592:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, size_type, size_type, const _Alloc&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
  592 |       basic_string(const basic_string& __str, size_type __pos,
      |       ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:592:7: note:   candidate expects 4 arguments, 1 provided
/usr/include/c++/12/bits/basic_string.h:574:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, size_type, size_type) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
  574 |       basic_string(const basic_string& __str, size_type __pos,
      |       ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:574:7: note:   candidate expects 3 arguments, 1 provided
/usr/include/c++/12/bits/basic_string.h:557:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, size_type, const _Alloc&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
  557 |       basic_string(const basic_string& __str, size_type __pos,
      |       ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:557:7: note:   candidate expects 3 arguments, 1 provided
/usr/include/c++/12/bits/basic_string.h:540:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
  540 |       basic_string(const basic_string& __str)
      |       ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:540:40: note:   no known conversion for argument 1 from 'int' to 'const std::__cxx11::basic_string<char>&'
  540 |       basic_string(const basic_string& __str)
      |                    ~~~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/12/bits/basic_string.h:528:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(const _Alloc&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
  528 |       basic_string(const _Alloc& __a) _GLIBCXX_NOEXCEPT
      |       ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:528:34: note:   no known conversion for argument 1 from 'int' to 'const std::allocator<char>&'
  528 |       basic_string(const _Alloc& __a) _GLIBCXX_NOEXCEPT
      |                    ~~~~~~~~~~~~~~^~~
/usr/include/c++/12/bits/basic_string.h:515:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string() [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
  515 |       basic_string()
      |       ^~~~~~~~~~~~
/usr/include/c++/12/bits/basic_string.h:515:7: note