Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:65:9: error: invalid user-defined conversion from ‘std::ifstream {aka std::basic_ifstream<char>}’ to ‘FILE* {aka _IO_FILE*}’ [-fpermissive] fclose(f); ^ In file included from /usr/include/c++/4.8/ios:44:0, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/bits/basic_ios.h:115:7: note: candidate is: std::basic_ios<_CharT, _Traits>::operator void*() const [with _CharT = char; _Traits = std::char_traits<char>] <near match> operator void*() const ^ /usr/include/c++/4.8/bits/basic_ios.h:115:7: note: no known conversion for implicit ‘this’ parameter from ‘void*’ to ‘FILE* {aka _IO_FILE*}’ user.cpp:66:9: error: invalid user-defined conversion from ‘std::ofstream {aka std::basic_ofstream<char>}’ to ‘FILE* {aka _IO_FILE*}’ [-fpermissive] fclose(g); ^ In file included from /usr/include/c++/4.8/ios:44:0, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/bits/basic_ios.h:115:7: note: candidate is: std::basic_ios<_CharT, _Traits>::operator void*() const [with _CharT = char; _Traits = std::char_traits<char>] <near match> operator void*() const ^ /usr/include/c++/4.8/bits/basic_ios.h:115:7: note: no known conversion for implicit ‘this’ parameter from ‘void*’ to ‘FILE* {aka _IO_FILE*}’