:1:20: warning: extra tokens at end of #include directive
1 | #include <iostream>;
| ^
:4:1: error: '::main' must return 'int'
4 | void main(){
| ^~~~
: In function 'int main()':
:6:8: error: no match for 'operator<<' (operand types are 'std::istream' {aka 'std::basic_istream<char>'} and 'int')
6 | cin<<a<<b<<endl;
| ~~~^~~
| | |
| | int
| std::istream {aka std::basic_istream<char>}
:6:8: note: candidate: 'operator<<(int, int)' (built-in)
6 | cin<<a<<b<<endl;
| ~~~^~~
:6:8: note: no known conversion for argument 1 from 'std::istream' {aka 'std::basic_istream<char>'} to 'int'
In file included from D:/msys64/ucrt64/include/c++/13.2.0/bits/basic_string.h:47,
from D:/msys64/ucrt64/include/c++/13.2.0/string:54,
from D:/msys64/ucrt64/include/c++/13.2.0/bits/locale_classes.h:40,
from D:/msys64/ucrt64/include/c++/13.2.0/bits/ios_base.h:41,
from D:/msys64/ucrt64/include/c++/13.2.0/ios:44,
from D:/msys64/ucrt64/include/c++/13.2.0/ostream:40,
from D:/msys64/ucrt64/include/c++/13.2.0/iostream:41,
from :1:
D:/msys64/ucrt64/include/c++/13.2.0/string_view:760:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, basic_string_view<_CharT, _Traits>)'
760 | operator<<(basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/string_view:760:5: note: template argument deduction/substitution failed:
:6:10: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>'
6 | cin<<a<<b<<endl;
| ^
D:/msys64/ucrt64/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, _Allocator>&)'
4020 | operator<<(basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/bits/basic_string.h:4020:5: note: template argument deduction/substitution failed:
:6:10: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>'
6 | cin<<a<<b<<endl;
| ^
In file included from D:/msys64/ucrt64/include/c++/13.2.0/bits/memory_resource.h:38,
from D:/msys64/ucrt64/include/c++/13.2.0/string:58:
D:/msys64/ucrt64/include/c++/13.2.0/cstddef:124:5: note: candidate: 'template<class _IntegerType> constexpr std::__byte_op_t<_IntegerType> std::operator<<(byte, _IntegerType)'
124 | operator<<(byte __b, _IntegerType __shift) noexcept
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/cstddef:124:5: note: template argument deduction/substitution failed:
:6:5: note: cannot convert 'std::cin' (type 'std::istream' {aka 'std::basic_istream<char>'}) to type 'std::byte'
6 | cin<<a<<b<<endl;
| ^~~
In file included from D:/msys64/ucrt64/include/c++/13.2.0/bits/ios_base.h:46:
D:/msys64/ucrt64/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)
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/system_error:339:5: note: template argument deduction/substitution failed:
:6:10: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>'
6 | cin<<a<<b<<endl;
| ^
D:/msys64/ucrt64/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)
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/ostream:554:5: note: template argument deduction/substitution failed:
:6:10: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>'
6 | cin<<a<<b<<endl;
| ^
D:/msys64/ucrt64/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)
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/ostream:564:5: note: template argument deduction/substitution failed:
:6:10: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>'
6 | cin<<a<<b<<endl;
| ^
D:/msys64/ucrt64/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)
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/ostream:570:5: note: template argument deduction/substitution failed:
:6:10: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<char, _Traits>'
6 | cin<<a<<b<<endl;
| ^
D:/msys64/ucrt64/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)
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/ostream:581:5: note: template argument deduction/substitution failed:
:6:10: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<char, _Traits>'
6 | cin<<a<<b<<endl;
| ^
D:/msys64/ucrt64/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)
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/ostream:586:5: note: template argument deduction/substitution failed:
:6:10: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<char, _Traits>'
6 | cin<<a<<b<<endl;
| ^
D:/msys64/ucrt64/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)
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/ostream:645:5: note: template argument deduction/substitution failed:
:6:10: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>'
6 | cin<<a<<b<<endl;
| ^
In file included from D:/msys64/ucrt64/include/c++/13.2.0/ostream:880:
D:/msys64/ucrt64/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)
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/bits/ostream.tcc:307:5: note: template argument deduction/substitution failed:
:6:10: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>'
6 | cin<<a<<b<<endl;
| ^
D:/msys64/ucrt64/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)
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/ostream:662:5: note: template argument deduction/substitution failed:
:6:10: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<char, _Traits>'
6 | cin<<a<<b<<endl;
| ^
D:/msys64/ucrt64/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)
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/ostream:675:5: note: template argument deduction/substitution failed:
:6:10: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<char, _Traits>'
6 | cin<<a<<b<<endl;
| ^
D:/msys64/ucrt64/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)
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/ostream:680:5: note: template argument deduction/substitution failed:
:6:10: note: 'std::istream' {aka 'std::basic_istream<char>'} is not derived from 'std::basic_ostream<char, _Traits>'
6 | cin<<a<<b<<endl;
| ^
D:/msys64/ucrt64/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)
| ^~~~~~~~
D:/msys64/ucrt64/include/c++/13.2.0/ostream:801:5: note: template argument deduction/substitution failed:
D:/msys64/ucrt64/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]':
:6:10: required from here
D:/msys64/ucrt64/include/c++/13.2.0/ostream:801:5: error: no type named 'type' in 'struct std::enable_if<false, void>'
:7:5: error: 'count' was not declared in this scope
7 | count>>a+b>>endl;
| ^~~~~