Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:27:103: error: ‘y’ was not declared in this scope if(l+t<=n&&((!C(a[l+t].x,u-dy)&&a[l+t].x<u-dy)||(C(a[l+t].x,u-dy)&&(C(a[l+t].y,v+dx)||y[l+t]<v+dx)))) ^ user.cpp:13:87: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("patrate3.in","r",stdin),freopen("patrate3.out","w",stdout),scanf("%d",&n); ^ user.cpp:13:87: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:13:87: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:15:150: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf",&c[i],&d[i]),a[i].x=(int)ceil(100000*c[i])-(int)(ceil(100000*c[i]))%2,a[i].y=(int)ceil(100000*d[i])-(int)(ceil(100000*d[i]))%2; ^