Eroare de compilare in evaluator: user.cpp: In function 'int main()': user.cpp:20: error: 'ifstream' was not declared in this scope user.cpp:20: error: expected `;' before 'fin' user.cpp:21: error: 'ofstream' was not declared in this scope user.cpp:21: error: expected `;' before 'fout' user.cpp:24: error: 'fin' was not declared in this scope user.cpp:29: error: 'fout' was not declared in this scope user.cpp:29: error: 'endl' was not declared in this scope user.cpp:32: error: 'fout' was not declared in this scope