Compilare: main.cpp: In function 'int main()': main.cpp:10:18: warning: unused variable 'r' [-Wunused-variable] double x, m, r; ^ main.cpp:8:36: 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); ^ main.cpp:9:38: 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); ^ main.cpp:11:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf", &x, &m); ^