Eroare de compilare: user.cpp:33:3: warning: no newline at end of file user.cpp: In function 'int main()': user.cpp:22: error: 'ifstream' was not declared in this scope user.cpp:22: error: expected `;' before 'f' user.cpp:23: error: 'ofstream' was not declared in this scope user.cpp:23: error: expected `;' before 'g' user.cpp:24: error: 'f' was not declared in this scope user.cpp:27: error: 'g' was not declared in this scope user.cpp:29: error: 'g' was not declared in this scope user.cpp:31: error: 'g' was not declared in this scope