Compilare: main.cpp: In function 'int main()': main.cpp:8:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("minarea.in","r",stdin); ^ main.cpp:9:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("minarea.out","w",stdout); ^ main.cpp:10:56: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d %d %d %d", &a, &b, &c, &d, &e, &f); ^