Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:14: error: no match for ‘operator=’ in ‘f1 = fopen(((const char*)"texttrim.in"), ((const char*)"r"))’ /usr/include/c++/4.4/iosfwd:87: note: candidates are: std::basic_fstream<char, std::char_traits<char> >& std::basic_fstream<char, std::char_traits<char> >::operator=(const std::basic_fstream<char, std::char_traits<char> >&) user.cpp:17: error: expected ‘)’ before ‘;’ token user.cpp:19: error: invalid conversion from ‘void*’ to ‘FILE*’ user.cpp:19: error: initializing argument 1 of ‘int getc(FILE*)’