Eroare de compilare in evaluator: user.cpp: In function 'int main()': user.cpp:9: error: 'ifstream' was not declared in this scope user.cpp:9: error: expected `;' before 'in' user.cpp:10: error: 'ofstream' was not declared in this scope user.cpp:10: error: expected `;' before 'out' user.cpp:11: error: 'in' was not declared in this scope user.cpp:27: error: 'st' was not declared in this scope user.cpp:29: error: 'q' was not declared in this scope user.cpp:29: error: 'sf' was not declared in this scope user.cpp:34: error: 'q' was not declared in this scope user.cpp:41: error: 'out' was not declared in this scope