Main.cc: In function ‘int main()’:
Main.cc:8:10: error: no match for ‘operator==’ (operand types are ‘std::string’ {aka ‘std::__cxx11::basic_string’} and ‘int’)
8 | if(a==0){
| ~^~~
| | |
| | int
| std::string {aka std::__cxx11::basic_string}
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from Main.cc:1:
/usr/include/c++/9/bits/regex.h:1026:5: note: candidate: ‘template bool std::__cxx11::operator==(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)’
1026 | operator==(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1026:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from Main.cc:1:
/usr/include/c++/9/bits/regex.h:1099:5: note: candidate: ‘template bool std::__cxx11::operator==(std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const std::__cxx11::sub_match<_BiIter>&)’
1099 | operator==(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1099:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: mismatched types ‘const std::__cxx11::sub_match<_BiIter>’ and ‘int’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from Main.cc:1:
/usr/include/c++/9/bits/regex.h:1173:5: note: candidate: ‘template bool std::__cxx11::operator==(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)’
1173 | operator==(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1173:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from Main.cc:1:
/usr/include/c++/9/bits/regex.h:1247:5: note: candidate: ‘template bool std::__cxx11::operator==(const typename std::iterator_traits<_Iter>::value_type*, const std::__cxx11::sub_match<_BiIter>&)’
1247 | operator==(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1247:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: mismatched types ‘const std::__cxx11::sub_match<_BiIter>’ and ‘int’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from Main.cc:1:
/usr/include/c++/9/bits/regex.h:1321:5: note: candidate: ‘template bool std::__cxx11::operator==(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)’
1321 | operator==(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1321:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from Main.cc:1:
/usr/include/c++/9/bits/regex.h:1395:5: note: candidate: ‘template bool std::__cxx11::operator==(const typename std::iterator_traits<_Iter>::value_type&, const std::__cxx11::sub_match<_BiIter>&)’
1395 | operator==(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1395:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: mismatched types ‘const std::__cxx11::sub_match<_BiIter>’ and ‘int’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from Main.cc:1:
/usr/include/c++/9/bits/regex.h:1473:5: note: candidate: ‘template bool std::__cxx11::operator==(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)’
1473 | operator==(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1473:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from Main.cc:1:
/usr/include/c++/9/bits/regex.h:1991:5: note: candidate: ‘template bool std::__cxx11::operator==(const std::__cxx11::match_results<_BiIter, _Alloc>&, const std::__cxx11::match_results<_BiIter, _Alloc>&)’
1991 | operator==(const match_results<_Bi_iter, _Alloc>& __m1,
| ^~~~~~~~
/usr/include/c++/9/bits/regex.h:1991:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::__cxx11::match_results<_BiIter, _Alloc>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/iosfwd:40,
from /usr/include/c++/9/ios:38,
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 Main.cc:1:
/usr/include/c++/9/bits/postypes.h:222:5: note: candidate: ‘template bool std::operator==(const std::fpos<_StateT>&, const std::fpos<_StateT>&)’
222 | operator==(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
| ^~~~~~~~
/usr/include/c++/9/bits/postypes.h:222:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::fpos<_StateT>’
8 | if(a==0){
| ^
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 Main.cc:1:
/usr/include/c++/9/bits/stl_pair.h:448:5: note: candidate: ‘template constexpr bool std::operator==(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)’
448 | operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
| ^~~~~~~~
/usr/include/c++/9/bits/stl_pair.h:448:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::pair<_T1, _T2>’
8 | if(a==0){
| ^
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 Main.cc:1:
/usr/include/c++/9/bits/stl_iterator.h:325:5: note: candidate: ‘template bool std::operator==(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)’
325 | operator==(const reverse_iterator<_Iterator>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_iterator.h:325:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::reverse_iterator<_Iterator>’
8 | if(a==0){
| ^
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 Main.cc:1:
/usr/include/c++/9/bits/stl_iterator.h:363:5: note: candidate: ‘template bool std::operator==(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)’
363 | operator==(const reverse_iterator<_IteratorL>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_iterator.h:363:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::reverse_iterator<_Iterator>’
8 | if(a==0){
| ^
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 Main.cc:1:
/usr/include/c++/9/bits/stl_iterator.h:1136:5: note: candidate: ‘template bool std::operator==(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)’
1136 | operator==(const move_iterator<_IteratorL>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_iterator.h:1136:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::move_iterator<_IteratorL>’
8 | if(a==0){
| ^
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 Main.cc:1:
/usr/include/c++/9/bits/stl_iterator.h:1142:5: note: candidate: ‘template bool std::operator==(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)’
1142 | operator==(const move_iterator<_Iterator>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_iterator.h:1142:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::move_iterator<_IteratorL>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/string:41,
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 Main.cc:1:
/usr/include/c++/9/bits/allocator.h:167:5: note: candidate: ‘template bool std::operator==(const std::allocator<_CharT>&, const std::allocator<_T2>&)’
167 | operator==(const allocator<_T1>&, const allocator<_T2>&)
| ^~~~~~~~
/usr/include/c++/9/bits/allocator.h:167:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::allocator<_CharT>’
8 | if(a==0){
| ^
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 Main.cc:1:
/usr/include/c++/9/bits/basic_string.h:6144:5: note: candidate: ‘template bool std::operator==(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)’
6144 | operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/basic_string.h:6144:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: mismatched types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>’ and ‘int’
8 | if(a==0){
| ^
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 Main.cc:1:
/usr/include/c++/9/bits/basic_string.h:6152:5: note: candidate: ‘template typename __gnu_cxx::__enable_if::__value, bool>::__type std::operator==(const std::__cxx11::basic_string<_CharT>&, const std::__cxx11::basic_string<_CharT>&)’
6152 | operator==(const basic_string<_CharT>& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/basic_string.h:6152:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: mismatched types ‘const std::__cxx11::basic_string<_CharT>’ and ‘int’
8 | if(a==0){
| ^
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 Main.cc:1:
/usr/include/c++/9/bits/basic_string.h:6166:5: note: candidate: ‘template bool std::operator==(const _CharT*, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)’
6166 | operator==(const _CharT* __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/basic_string.h:6166:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: mismatched types ‘const _CharT*’ and ‘std::__cxx11::basic_string’
8 | if(a==0){
| ^
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 Main.cc:1:
/usr/include/c++/9/bits/basic_string.h:6178:5: note: candidate: ‘template bool std::operator==(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)’
6178 | operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/9/bits/basic_string.h:6178:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: mismatched types ‘const _CharT*’ and ‘int’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/bits/ios_base.h:46,
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 Main.cc:1:
/usr/include/c++/9/system_error:292:3: note: candidate: ‘bool std::operator==(const std::error_code&, const std::error_code&)’
292 | operator==(const error_code& __lhs, const error_code& __rhs) noexcept
| ^~~~~~~~
/usr/include/c++/9/system_error:292:32: note: no known conversion for argument 1 from ‘std::string’ {aka ‘std::__cxx11::basic_string’} to ‘const std::error_code&’
292 | operator==(const error_code& __lhs, const error_code& __rhs) noexcept
| ~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/9/system_error:297:3: note: candidate: ‘bool std::operator==(const std::error_code&, const std::error_condition&)’
297 | operator==(const error_code& __lhs, const error_condition& __rhs) noexcept
| ^~~~~~~~
/usr/include/c++/9/system_error:297:32: note: no known conversion for argument 1 from ‘std::string’ {aka ‘std::__cxx11::basic_string’} to ‘const std::error_code&’
297 | operator==(const error_code& __lhs, const error_condition& __rhs) noexcept
| ~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/9/system_error:304:3: note: candidate: ‘bool std::operator==(const std::error_condition&, const std::error_code&)’
304 | operator==(const error_condition& __lhs, const error_code& __rhs) noexcept
| ^~~~~~~~
/usr/include/c++/9/system_error:304:37: note: no known conversion for argument 1 from ‘std::string’ {aka ‘std::__cxx11::basic_string’} to ‘const std::error_condition&’
304 | operator==(const error_condition& __lhs, const error_code& __rhs) noexcept
| ~~~~~~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/9/system_error:311:3: note: candidate: ‘bool std::operator==(const std::error_condition&, const std::error_condition&)’
311 | operator==(const error_condition& __lhs,
| ^~~~~~~~
/usr/include/c++/9/system_error:311:37: note: no known conversion for argument 1 from ‘std::string’ {aka ‘std::__cxx11::basic_string’} to ‘const std::error_condition&’
311 | operator==(const error_condition& __lhs,
| ~~~~~~~~~~~~~~~~~~~~~~~^~~~~
In file included from /usr/include/c++/9/bits/locale_facets.h:48,
from /usr/include/c++/9/bits/basic_ios.h:37,
from /usr/include/c++/9/ios:44,
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 Main.cc:1:
/usr/include/c++/9/bits/streambuf_iterator.h:208:5: note: candidate: ‘template bool std::operator==(const std::istreambuf_iterator<_CharT, _Traits>&, const std::istreambuf_iterator<_CharT, _Traits>&)’
208 | operator==(const istreambuf_iterator<_CharT, _Traits>& __a,
| ^~~~~~~~
/usr/include/c++/9/bits/streambuf_iterator.h:208:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::istreambuf_iterator<_CharT, _Traits>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from Main.cc:1:
/usr/include/c++/9/complex:463:5: note: candidate: ‘template constexpr bool std::operator==(const std::complex<_Tp>&, const std::complex<_Tp>&)’
463 | operator==(const complex<_Tp>& __x, const complex<_Tp>& __y)
| ^~~~~~~~
/usr/include/c++/9/complex:463:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::complex<_Tp>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from Main.cc:1:
/usr/include/c++/9/complex:468:5: note: candidate: ‘template constexpr bool std::operator==(const std::complex<_Tp>&, const _Tp&)’
468 | operator==(const complex<_Tp>& __x, const _Tp& __y)
| ^~~~~~~~
/usr/include/c++/9/complex:468:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::complex<_Tp>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from Main.cc:1:
/usr/include/c++/9/complex:473:5: note: candidate: ‘template constexpr bool std::operator==(const _Tp&, const std::complex<_Tp>&)’
473 | operator==(const _Tp& __x, const complex<_Tp>& __y)
| ^~~~~~~~
/usr/include/c++/9/complex:473:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: mismatched types ‘const std::complex<_Tp>’ and ‘int’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/deque:67,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:68,
from Main.cc:1:
/usr/include/c++/9/bits/stl_deque.h:286:5: note: candidate: ‘template bool std::operator==(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&)’
286 | operator==(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_deque.h:286:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::_Deque_iterator<_Tp, _Ref, _Ptr>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/deque:67,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:68,
from Main.cc:1:
/usr/include/c++/9/bits/stl_deque.h:293:5: note: candidate: ‘template bool std::operator==(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _RefR, _PtrR>&)’
293 | operator==(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_deque.h:293:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::_Deque_iterator<_Tp, _Ref, _Ptr>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/deque:67,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:68,
from Main.cc:1:
/usr/include/c++/9/bits/stl_deque.h:2312:5: note: candidate: ‘template bool std::operator==(const std::deque<_Tp, _Alloc>&, const std::deque<_Tp, _Alloc>&)’
2312 | operator==(const deque<_Tp, _Alloc>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/stl_deque.h:2312:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::deque<_Tp, _Alloc>’
8 | if(a==0){
| ^
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 Main.cc:1:
/usr/include/c++/9/array:252:5: note: candidate: ‘template bool std::operator==(const std::array<_Tp, _Nm>&, const std::array<_Tp, _Nm>&)’
252 | operator==(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
| ^~~~~~~~
/usr/include/c++/9/array:252:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::array<_Tp, _Nm>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/functional:54,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:71,
from Main.cc:1:
/usr/include/c++/9/tuple:1419:5: note: candidate: ‘template constexpr bool std::operator==(const std::tuple<_Tps ...>&, const std::tuple<_Elements ...>&)’
1419 | operator==(const tuple<_TElements...>& __t,
| ^~~~~~~~
/usr/include/c++/9/tuple:1419:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::tuple<_Tps ...>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/functional:59,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:71,
from Main.cc:1:
/usr/include/c++/9/bits/std_function.h:746:5: note: candidate: ‘template bool std::operator==(const std::function<_Res(_ArgTypes ...)>&, std::nullptr_t)’
746 | operator==(const function<_Res(_Args...)>& __f, nullptr_t) noexcept
| ^~~~~~~~
/usr/include/c++/9/bits/std_function.h:746:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::function<_Res(_ArgTypes ...)>’
8 | if(a==0){
| ^
In file included from /usr/include/c++/9/functional:59,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:71,
from Main.cc:1:
/usr/include/c++/9/bits/std_function.h:752:5: note: candidate: ‘template bool std::operator==(std::nullptr_t, const std::function<_Res(_ArgTypes ...)>&)’
752 | operator==(nullptr_t, const function<_Res(_Args...)>& __f) noexcept
| ^~~~~~~~
/usr/include/c++/9/bits/std_function.h:752:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: mismatched types ‘const std::function<_Res(_ArgTypes ...)>’ and ‘int’
8 | if(a==0){
| ^
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 Main.cc:1:
/usr/include/c++/9/bits/unique_ptr.h:715:5: note: candidate: ‘template bool std::operator==(const std::unique_ptr<_Tp, _Dp>&, const std::unique_ptr<_Up, _Ep>&)’
715 | operator==(const unique_ptr<_Tp, _Dp>& __x,
| ^~~~~~~~
/usr/include/c++/9/bits/unique_ptr.h:715:5: note: template argument deduction/substitution failed:
Main.cc:8:12: note: ‘std::string’ {aka ‘std::__cxx11::basic_string’} is not derived from ‘const std::unique_ptr<_Tp, _Dp>’