Eroare de compilare in evaluator: user.cpp: In function 'int main()': user.cpp:14: error: 'FILE' was not declared in this scope user.cpp:14: error: 'fi' was not declared in this scope user.cpp:14: error: 'fo' was not declared in this scope user.cpp:16: error: 'fopen' was not declared in this scope user.cpp:17: error: 'fscanf' was not declared in this scope user.cpp:19: error: 'fclose' was not declared in this scope user.cpp:20: error: expected unqualified-id before string constant user.cpp:21: error: 'fprintf' was not declared in this scope