Compilare: user.cpp: In function ‘int main()’: user.cpp:16:29: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 2 has type ‘long long int’ [-Wformat=] printf ( "%ld", eval (0)) ; ^ user.cpp:14:46: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ( "evaluare1.out", "w", stdout ) ; ^ user.cpp:15:49: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s, 100010, fopen("evaluare1.in", "r")); ^