Eroare de compilare: In file included from /usr/include/c++/4.4/ios:39, from /usr/include/c++/4.4/istream:40, from /usr/include/c++/4.4/fstream:40, from user.cpp:1: /usr/include/c++/4.4/bits/ios_base.h: In member function ‘std::basic_ios<char, std::char_traits<char> >& std::basic_ios<char, std::char_traits<char> >::operator=(const std::basic_ios<char, std::char_traits<char> >&)’: /usr/include/c++/4.4/bits/ios_base.h:793: error: ‘std::ios_base& std::ios_base::operator=(const std::ios_base&)’ is private /usr/include/c++/4.4/iosfwd:47: error: within this context /usr/include/c++/4.4/iosfwd: In member function ‘std::basic_istream<char, std::char_traits<char> >& std::basic_istream<char, std::char_traits<char> >::operator=(const std::basic_istream<char, std::char_traits<char> >&)’: /usr/include/c++/4.4/iosfwd:53: note: synthesized method ‘std::basic_ios<char, std::char_traits<char> >& std::basic_ios<char, std::char_traits<char> >::operator=(const std::basic_ios<char, std::char_traits<char> >&)’ first required here /usr/include/c++/4.4/iosfwd: In member function ‘std::basic_ifstream<char, std::char_traits<char> >& std::basic_ifstream<char, std::char_traits<char> >::operator=(const std::basic_ifstream<char, std::char_traits<char> >&)’: /usr/include/c++/4.4/iosfwd:81: note: synthesized method ‘std::basic_istream<char, std::char_traits<char> >& std::basic_istream<char, std::char_traits<char> >::operator=(const std::basic_istream<char, std::char_traits<char> >&)’ first required here /usr/include/c++/4.4/streambuf: In member function ‘std::basic_filebuf<char, std::char_traits<char> >& std::basic_filebuf<char, std::char_traits<char> >::operator=(const std::basic_filebuf<char, std::char_traits<char> >&)’: /usr/include/c++/4.4/streambuf:778: error: ‘std::basic_streambuf<_CharT, _Traits>& std::basic_streambuf<_CharT, _Traits>::operator=(const std::basic_streambuf<_CharT, _Traits>&) [with _CharT = char, _Traits = std::char_traits<char>]’ is private /usr/include/c++/4.4/iosfwd:78: error: within this context /usr/include/c++/4.4/iosfwd: In member function ‘std::basic_ifstream<char, std::char_traits<char> >& std::basic_ifstream<char, std::char_traits<char> >::operator=(const std::basic_ifstream<char, std::char_traits<char> >&)’: /usr/include/c++/4.4/iosfwd:81: note: synthesized method ‘std::basic_filebuf<char, std::char_traits<char> >& std::basic_filebuf<char, std::char_traits<char> >::operator=(const std::basic_filebuf<char, std::char_traits<char> >&)’ first required here user.cpp: In function ‘int main()’: user.cpp:24: note: synthesized method ‘std::basic_ifstream<char, std::char_traits<char> >& std::basic_ifstream<char, std::char_traits<char> >::operator=(const std::basic_ifstream<char, std::char_traits<char> >&)’ first required here user.cpp:38: warning: suggest parentheses around ‘&&’ within ‘||’