Borderou de evaluare (job #160321)

Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:8:15: error: ‘f’ was not declared in this scope user.cpp:8:30: error: invalid use of incomplete type ‘std::ifstream {aka struct std::basic_ifstream<char>}’ /usr/include/c++/4.6/iosfwd:113:11: error: declaration of ‘std::ifstream {aka struct std::basic_ifstream<char>}’ user.cpp:9:15: error: ‘g’ was not declared in this scope user.cpp:9:31: error: invalid use of incomplete type ‘std::ofstream {aka struct std::basic_ofstream<char>}’ /usr/include/c++/4.6/iosfwd:116:11: error: declaration of ‘std::ofstream {aka struct std::basic_ofstream<char>}’