Compilare: main.cpp: In function 'int main()': main.cpp:50:4: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if ((i==0 || detsg(p[e].y-st[i].y)>0) && detsg(p[e].y-st[j].y)<=0) ^ main.cpp:27:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("insula2.in","r",stdin); ^ main.cpp:28:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("insula2.out","w",stdout); ^ main.cpp:31:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^ main.cpp:37:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf",&p[i].x,&p[i].y); ^