Eroare de compilare: user.cpp: In function 'int main()': user.cpp:15: error: 'ifstream' was not declared in this scope user.cpp:15: error: expected `;' before 'fin' user.cpp:16: error: 'ofstream' was not declared in this scope user.cpp:16: error: expected `;' before 'fout' user.cpp:27: error: 'fin' was not declared in this scope user.cpp:39: error: 'cout' was not declared in this scope user.cpp:41: error: 'fin' was not declared in this scope user.cpp:41: error: 'fout' was not declared in this scope