Compiler output
prog.cpp: In function 'int main()':
prog.cpp:6:4: error: no match for 'operator<<' (operand types are 'std::istream {aka std::basic_istream<char>}' and 'int')
cin<<a<<b;
^
prog.cpp:6:4: note: candidates are:
In file included from /usr/include/c++/4.9/string:52:0,
from /usr/include/c++/4.9/bits/locale_classes.h:40,
from /usr/include/c++/4.9/bits/ios_base.h:41,
from /usr/include/c++/4.9/ios:42,
from /usr/include/c++/4.9/ostream:38,
from /usr/include/c++/4.9/iostream:39,
from prog.cpp:1:
/usr/include/c++/4.9/bits/basic_string.h:2772:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
operator<<(basic_ostream<_CharT, _Traits>& __os,
^
/usr/include/c++/4.9/bits/basic_string.h:2772:5: note: template argument deduction/substitution failed:
prog.cpp:6:6: note: 'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin<<a<<b;
^
In file included from /usr/include/c++/4.9/iostream:39:0,
from prog.cpp:1:
/usr/include/c++/4.9/ostream:471:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, _CharT)
operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
^
/usr/include/c++/4.9/ostream:471:5: note: template argument deduction/substitution failed:
prog.cpp:6:6: note: 'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin<<a<<b;
^
In file included from /usr/include/c++/4.9/iostream:39:0,
from prog.cpp:1:
/usr/include/c++/4.9/ostream:476:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, char)
operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
^
/usr/include/c++/4.9/ostream:476:5: note: template argument deduction/substitution failed:
prog.cpp:6:6: note: 'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin<<a<<b;
^
In file included from /usr/include/c++/4.9/iostream:39:0,
from prog.cpp:1:
/usr/include/c++/4.9/ostream:482:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, char)
operator<<(basic_ostream<char, _Traits>& __out, char __c)
^
/usr/include/c++/4.9/ostream:482:5: note: template argument deduction/substitution failed:
prog.cpp:6:6: note: 'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
cin<<a<<b;
^
In file included from /usr/include/c++/4.9/iostream:39:0,
from prog.cpp:1:
/usr/include/c++/4.9/ostream:488:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, signed char)
operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
^
/usr/include/c++/4.9/ostream:488:5: note: template argument deduction/substitution failed:
prog.cpp:6:6: note: 'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
cin<<a<<b;
^
In file included from /usr/include/c++/4.9/iostream:39:0,
from prog.cpp:1:
/usr/include/c++/4.9/ostream:493:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, unsigned char)
operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
^
/usr/include/c++/4.9/ostream:493:5: note: template argument deduction/substitution failed:
prog.cpp:6:6: note: 'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
cin<<a<<b;
^
In file included from /usr/include/c++/4.9/iostream:39:0,
from prog.cpp:1:
/usr/include/c++/4.9/ostream:513:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const _CharT*)
operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
^
/usr/include/c++/4.9/ostream:513:5: note: template argument deduction/substitution failed:
prog.cpp:6:6: note: 'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin<<a<<b;
^
In file included from /usr/include/c++/4.9/ostream:609:0,
from /usr/include/c++/4.9/iostream:39,
from prog.cpp:1:
/usr/include/c++/4.9/bits/ostream.tcc:321:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const char*)
operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
^
/usr/include/c++/4.9/bits/ostream.tcc:321:5: note: template argument deduction/substitution failed:
prog.cpp:6:6: note: 'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin<<a<<b;
^
In file included from /usr/include/c++/4.9/iostream:39:0,
from prog.cpp:1:
/usr/include/c++/4.9/ostream:530:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const char*)
operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
^
/usr/include/c++/4.9/ostream:530:5: note: template argument deduction/substitution failed:
prog.cpp:6:6: note: 'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
cin<<a<<b;
^
In file included from /usr/include/c++/4.9/iostream:39:0,
from prog.cpp:1:
/usr/include/c++/4.9/ostream:543:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const signed char*)
operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
^
/usr/include/c++/4.9/ostream:543:5: note: template argument deduction/substitution failed:
prog.cpp:6:6: note: 'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
cin<<a<<b;
^
In file included from /usr/include/c++/4.9/iostream:39:0,
from prog.cpp:1:
/usr/include/c++/4.9/ostream:548:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const unsigned char*)
operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
^
/usr/include/c++/4.9/ostream:548:5: note: template argument deduction/substitution failed:
prog.cpp:6:6: note: 'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
cin<<a<<b;
^
In file included from /usr/include/c++/4.9/iostream:39:0,
from prog.cpp:1:
/usr/include/c++/4.9/ostream:602:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&&, const _Tp&)
operator<<(basic_ostream<_CharT, _Traits>&& __os, const _Tp& __x)
^
/usr/include/c++/4.9/ostream:602:5: note: template argument deduction/substitution failed:
prog.cpp:6:6: note: 'std::istream {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin<<a<<b;
^
prog.cpp:7:5: error: no match for 'operator>>' (operand types are 'std::ostream {aka std::basic_ostream<char>}' and 'int')
cout>>a+b;
^
prog.cpp:7:5: note: candidates are:
In file included from /usr/include/c++/4.9/string:53:0,
from /usr/include/c++/4.9/bits/locale_classes.h:40,
from /usr/include/c++/4.9/bits/ios_base.h:41,
from /usr/include/c++/4.9/ios:42,
from /usr/include/c++/4.9/ostream:38,
from /usr/include/c++/4.9/iostream:39,
from prog.cpp:1:
/usr/include/c++/4.9/bits/basic_string.tcc:996:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&)
operator>>(basic_istream<_CharT, _Traits>& __in,
^
/usr/include/c++/4.9/bits/basic_string.tcc:996:5: note: template argument deduction/substitution failed:
prog.cpp:7:9: note: 'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
cout>>a+b;
^
In file included from /usr/include/c++/4.9/istream:879:0,
from /usr/include/c++/4.9/iostream:40,
from prog.cpp:1:
/usr/include/c++/4.9/bits/istream.tcc:955:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
^
/usr/include/c++/4.9/bits/istream.tcc:955:5: note: template argument deduction/substitution failed:
prog.cpp:7:9: note: 'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
cout>>a+b;
^
In file included from /usr/include/c++/4.9/istream:879:0,
from /usr/include/c++/4.9/iostream:40,
from prog.cpp:1:
/usr/include/c++/4.9/bits/istream.tcc:923:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
^
/usr/include/c++/4.9/bits/istream.tcc:923:5: note: template argument deduction/substitution failed:
prog.cpp:7:9: note: 'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
cout>>a+b;
^
In file included from /usr/include/c++/4.9/iostream:40:0,
from prog.cpp:1:
/usr/include/c++/4.9/istream:727:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)
operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
^
/usr/include/c++/4.9/istream:727:5: note: template argument deduction/substitution failed:
prog.cpp:7:9: note: 'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
cout>>a+b;
^
In file included from /usr/include/c++/4.9/iostream:40:0,
from prog.cpp:1:
/usr/include/c++/4.9/istream:732:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)
operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
^
/usr/include/c++/4.9/istream:732:5: note: template argument deduction/substitution failed:
prog.cpp:7:9: note: 'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
cout>>a+b;
^
In file included from /usr/include/c++/4.9/iostream:40:0,
from prog.cpp:1:
/usr/include/c++/4.9/istream:774:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)
operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
^
/usr/include/c++/4.9/istream:774:5: note: template argument deduction/substitution failed:
prog.cpp:7:9: note: 'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
cout>>a+b;
^
In file included from /usr/include/c++/4.9/iostream:40:0,
from prog.cpp:1:
/usr/include/c++/4.9/istream:779:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)
operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
^
/usr/include/c++/4.9/istream:779:5: note: template argument deduction/substitution failed:
prog.cpp:7:9: note: 'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
cout>>a+b;
^
In file included from /usr/include/c++/4.9/iostream:40:0,
from prog.cpp:1:
/usr/include/c++/4.9/istream:872:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&)
operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
^
/usr/include/c++/4.9/istream:872:5: note: template argument deduction/substitution failed:
prog.cpp:7:9: note: 'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
cout>>a+b;
^
prog.cpp:7:8: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
cout>>a+b;
^
