Compilare: user.cpp: In function ‘int main()’: user.cpp:103:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int q=0;q<intpoints.size();q++) point[++nr]=intpoints[q]; ^ user.cpp:119:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<oncircle.size()-1;j++) ^ user.cpp:90:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cerc.in", "r", stdin); ^ user.cpp:91:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cerc.out", "w", stdout); ^ user.cpp:93:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:94:84: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=1;i<=n;i++) scanf("%lf%lf%lf",&circle[i].x,&circle[i].y,&circle[i].r); ^