Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:13:12: error: no match for ‘operator>>’ (operand types are ‘std::ofstream {aka std::basic_ofstream<char>}’ and ‘int’) infile2 >> x; ~~~~~~~~^~~~ user.cpp:13:12: note: candidate: operator>>(int, int) <built-in> user.cpp:13:12: note: no known conversion for argument 1 from ‘std::ofstream {aka std::basic_ofstream<char>}’ to ‘int’ In file included from /usr/include/c++/6/string:53:0, from /usr/include/c++/6/bits/locale_classes.h:40, from /usr/include/c++/6/bits/ios_base.h:41, from /usr/include/c++/6/ios:42, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from user.cpp:1: /usr/include/c++/6/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, ^~~~~~~~ /usr/include/c++/6/bits/basic_string.tcc:1437:5: note: template argument deduction/substitution failed: user.cpp:13:15: note: ‘std::ofstream {aka std::basic_ofstream<char>}’ is not derived from ‘std::basic_istream<_CharT, _Traits>’ infile2 >> x; ^ In file included from /usr/include/c++/6/istream:934:0, from /usr/include/c++/6/iostream:40, from user.cpp:1: /usr/include/c++/6/bits/istream.tcc:955:5: note: candidate: 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++/6/bits/istream.tcc:955:5: note: template argument deduction/substitution failed: user.cpp:13:15: note: ‘std::ofstream {aka std::basic_ofstream<char>}’ is not derived from ‘std::basic_istream<_CharT, _Traits>’ infile2 >> x; ^ In file included from /usr/include/c++/6/istream:934:0, from /usr/include/c++/6/iostream:40, from user.cpp:1: /usr/include/c++/6/bits/istream.tcc:923:5: note: candidate: 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++/6/bits/istream.tcc:923:5: note: template argument deduction/substitution failed: user.cpp:13:15: note: ‘std::ofstream {aka std::basic_ofstream<char>}’ is not derived from ‘std::basic_istream<_CharT, _Traits>’ infile2 >> x; ^ In file included from /usr/include/c++/6/iostream:40:0, from user.cpp:1: /usr/include/c++/6/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) ^~~~~~~~ /usr/include/c++/6/istream:756:5: note: template argument deduction/substitution failed: user.cpp:13:15: note: ‘std::ofstream {aka std::basic_ofstream<char>}’ is not derived from ‘std::basic_istream<char, _Traits>’ infile2 >> x; ^ In file included from /usr/include/c++/6/iostream:40:0,