Menu
▾
▴
#663 istream cannot handle std::endl anymore
#include <iostream>
int main() {
int n;
for (int n=1; n <= 2; n++) {
std::cin>>n>>std::endl;
}
return 0;
}
this used to work, now I get
istream-endl.cpp: In function 'int main()':
istream-endl.cpp:5:12: error: no match for 'operator>>' (operand types are 'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' and '<unresolved overloaded function type>')
std::cin>>n>>std::endl;
~~~~~~~~~~~^~~~~
In file included from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/iostream:40:0,
from istream-endl.cpp:1:
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:120:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__istream_type& (*)(std::basic_istream<_CharT, _Traits>::__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>:
:__istream_type = std::basic_istream<char>]
operator>>(__istream_type& (*__pf)(__istream_type&))
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:120:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&) {aka std::basic_istream<char>& (*)(std::basic_istream<char>&)}'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:124:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__ios_type& (*)(std::basic_istream<_CharT, _Traits>::__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istre
am_type = std::basic_istream<char>; std::basic_istream<_CharT, _Traits>::__ios_type = std::basic_ios<char>]
operator>>(__ios_type& (*__pf)(__ios_type&))
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:124:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&) {aka std::basic_ios<char>& (*)(std::basic_ios<char>&)}'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:131:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]
operator>>(ios_base& (*__pf)(ios_base&))
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:131:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::ios_base& (*)(std::ios_base&)'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:168:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]
operator>>(bool& __n)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:168:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'bool&'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:172:7: note: candidate: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]
operator>>(short& __n);
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:172:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'short int&'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:175:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]
operator>>(unsigned short& __n)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:175:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'short unsigned int&'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:179:7: note: candidate: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]
operator>>(int& __n);
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:179:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'int&'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:182:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]
operator>>(unsigned int& __n)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:182:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'unsigned int&'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:186:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]
operator>>(long& __n)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:186:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long int&'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:190:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]
operator>>(unsigned long& __n)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:190:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long unsigned int&'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:195:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]
operator>>(long long& __n)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:195:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long long int&'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:199:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]
operator>>(unsigned long long& __n)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:199:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long long unsigned int&'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:214:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]
operator>>(float& __f)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:214:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'float&'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:218:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]
operator>>(double& __f)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:218:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'double&'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:222:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]
operator>>(long double& __f)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:222:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'long double&'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:235:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]
operator>>(void*& __p)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:235:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'void*&'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:259:7: note: candidate: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__streambuf_type*) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__streambuf_type = std::basic_streambuf<char>]
operator>>(__streambuf_type* __sb);
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:259:7: note: no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::basic_istream<char>::__streambuf_type* {aka std::basic_streambuf<char>*}'
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:924:5: note: candidate: 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)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:924:5: note: template argument deduction/substitution failed:
istream-endl.cpp:5:19: note: couldn't deduce template parameter '_Tp'
std::cin>>n>>std::endl;
^~~~
In file included from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/iostream:40:0,
from istream-endl.cpp:1:
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:808:5: note: candidate: 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)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:808:5: note: template argument deduction/substitution failed:
istream-endl.cpp:5:19: note: cannot convert 'std::endl' (type '<unresolved overloaded function type>') to type 'signed char*'
std::cin>>n>>std::endl;
^~~~
In file included from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/iostream:40:0,
from istream-endl.cpp:1:
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:803:5: note: candidate: 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)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:803:5: note: template argument deduction/substitution failed:
istream-endl.cpp:5:19: note: cannot convert 'std::endl' (type '<unresolved overloaded function type>') to type 'unsigned char*'
std::cin>>n>>std::endl;
^~~~
In file included from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/iostream:40:0,
from istream-endl.cpp:1:
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:761:5: note: candidate: 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)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:761:5: note: template argument deduction/substitution failed:
istream-endl.cpp:5:19: note: cannot convert 'std::endl' (type '<unresolved overloaded function type>') to type 'signed char&'
std::cin>>n>>std::endl;
^~~~
In file included from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/iostream:40:0,
from istream-endl.cpp:1:
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:756:5: note: candidate: 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)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:756:5: note: template argument deduction/substitution failed:
istream-endl.cpp:5:19: note: cannot convert 'std::endl' (type '<unresolved overloaded function type>') to type 'unsigned char&'
std::cin>>n>>std::endl;
^~~~
In file included from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:934:0,
from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/iostream:40,
from istream-endl.cpp:1:
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/bits/istream.tcc:923:5: note: candidate: std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&) [with _CharT = char; _Traits = std::char_traits<char>]
operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/bits/istream.tcc:923:5: note: no known conversion for argument 2 from '<unresolved overloaded function type>' to 'char&'
In file included from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/iostream:40:0,
from istream-endl.cpp:1:
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:799:5: note: candidate: std::basic_istream<_CharT2, _Traits2>& std::operator>>(std::basic_istream<_CharT2, _Traits2>&, _CharT2*) [with _CharT2 = char; _Traits2 = std::char_traits<char>; _CharT = char; _Traits = std::char_traits<char>]
operator>>(basic_istream<char>& __in, char* __s);
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/istream:799:5: note: no known conversion for argument 2 from '<unresolved overloaded function type>' to 'char*'
In file included from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/string:53:0,
from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/bits/locale_classes.h:40,
from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/bits/ios_base.h:41,
from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/ios:42,
from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/ostream:38,
from T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/iostream:39,
from istream-endl.cpp:1:
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/bits/basic_string.tcc:1437:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)
operator>>(basic_istream<_CharT, _Traits>& __in,
^~~~~~~~
T:/sjlj64032/mingw32/lib/gcc/i686-w64-mingw32/6.4.0/include/c++/bits/basic_string.tcc:1437:5: note: template argument deduction/substitution failed:
istream-endl.cpp:5:19: note: couldn't deduce template parameter '_Alloc'
std::cin>>n>>std::endl;
^~~~
do you think the error generator that generates the same error 10x could be reduced to 1? would be nice. would save everyone loads of time and frustration.
g++ --version
g++ (i686-posix-sjlj-rev0, Built by MinGW-W64 project) 6.4.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
been this way since about 6.x or 5.4.x
There is no extraction manipulator for endl on an istream. If there ever was, it was a nonstandard extension. Are you thinking of std::ws manipulator?