Compilare: main.cpp: In function 'int main()': main.cpp:115:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("triang.in", "r", stdin); ^ main.cpp:116:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("triang.out", "w", stdout); ^ main.cpp:118:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d\n", &n); ^ main.cpp:120:52: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%lf %lf\n", &points[i].x, &points[i].y); ^