main1.cpp: In function 'int main()':
main1.cpp:14:14: error: no match for 'operator+' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'int')
   14 | cout << name + age << endl;
      |         ~~~~ ^ ~~~
      |         |      |
      |         |      int
      |         std::string {aka std::__cxx11::basic_string<char>}
In file included from /usr/include/c++/12/string:47,
                 from /usr/include/c++/12/bitset:47,
                 from cmpslib19.h:4,
                 from main1.cpp:3:
/usr/include/c++/12/bits/stl_iterator.h:630:5: note: candidate: 'template<class _Iterator> constexpr std::reverse_iterator<_Iterator> std::operator+(typename reverse_iterator<_Iterator>::difference_type, const reverse_iterator<_Iterator>&)'
  630 |     operator+(typename reverse_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/12/bits/stl_iterator.h:630:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   14 | cout << name + age << endl;
      |                ^~~
/usr/include/c++/12/bits/stl_iterator.h:1786:5: note: candidate: 'template<class _Iterator> constexpr std::move_iterator<_IteratorL> std::operator+(typename move_iterator<_IteratorL>::difference_type, const move_iterator<_IteratorL>&)'
 1786 |     operator+(typename move_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/12/bits/stl_iterator.h:1786:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   14 | cout << name + age << endl;
      |                ^~~
In file included from /usr/include/c++/12/string:53:
/usr/include/c++/12/bits/basic_string.h:3432:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3432 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.h:3432:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   14 | cout << name + age << endl;
      |                ^~~
In file included from /usr/include/c++/12/string:54:
/usr/include/c++/12/bits/basic_string.tcc:606:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
  606 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.tcc:606:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   mismatched types 'const _CharT*' and 'std::__cxx11::basic_string<char>'
   14 | cout << name + age << endl;
      |                ^~~
/usr/include/c++/12/bits/basic_string.tcc:627:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
  627 |     operator+(_CharT __lhs, const basic_string<_CharT, _Traits, _Alloc>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.tcc:627:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   14 | cout << name + age << endl;
      |                ^~~
/usr/include/c++/12/bits/basic_string.h:3472:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3472 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.h:3472:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   mismatched types 'const _CharT*' and 'int'
   14 | cout << name + age << endl;
      |                ^~~
/usr/include/c++/12/bits/basic_string.h:3489:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, _CharT)'
 3489 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs)
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.h:3489:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   deduced conflicting types for parameter '_CharT' ('char' and 'int')
   14 | cout << name + age << endl;
      |                ^~~
/usr/include/c++/12/bits/basic_string.h:3502:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3502 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.h:3502:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   14 | cout << name + age << endl;
      |                ^~~
/usr/include/c++/12/bits/basic_string.h:3509:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3509 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.h:3509:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   14 | cout << name + age << endl;
      |                ^~~
/usr/include/c++/12/bits/basic_string.h:3516:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3516 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.h:3516:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   14 | cout << name + age << endl;
      |                ^~~
/usr/include/c++/12/bits/basic_string.h:3539:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3539 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.h:3539:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   mismatched types 'const _CharT*' and 'std::__cxx11::basic_string<char>'
   14 | cout << name + age << endl;
      |                ^~~
/usr/include/c++/12/bits/basic_string.h:3546:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3546 |     operator+(_CharT __lhs,
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.h:3546:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   14 | cout << name + age << endl;
      |                ^~~
/usr/include/c++/12/bits/basic_string.h:3553:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, const _CharT*)'
 3553 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.h:3553:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   mismatched types 'const _CharT*' and 'int'
   14 | cout << name + age << endl;
      |                ^~~
/usr/include/c++/12/bits/basic_string.h:3560:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, _CharT)'
 3560 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/12/bits/basic_string.h:3560:5: note:   template argument deduction/substitution failed:
main1.cpp:14:16: note:   deduced conflicting types for parameter '_CharT' ('char' and 'int')
   14 | cout << name + age << endl;
      |                ^~~