Compilare: user.cpp: In function ‘int main()’: user.cpp:7:8: warning: unused variable ‘f’ [-Wunused-variable] FILE *f, *g; ^ user.cpp:7:12: warning: unused variable ‘g’ [-Wunused-variable] FILE *f, *g; ^ user.cpp:8:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("noroc.in", "r", stdin); ^ user.cpp:9:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("noroc.out", "w", stdout); ^ user.cpp:11:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%Lf %Lf", &x, &m); ^