Eroare de compilare: user.c: In function ‘D’: user.c:25:10: error: subscripted value is neither array nor pointer nor vector b[++j].x=d[i].y,b[j].y=d[i].x; ^ user.c:25:26: error: subscripted value is neither array nor pointer nor vector b[++j].x=d[i].y,b[j].y=d[i].x; ^ user.c:25:24: warning: left-hand operand of comma expression has no effect [-Wunused-value] b[++j].x=d[i].y,b[j].y=d[i].x; ^ user.c:28:19: error: subscripted value is neither array nor pointer nor vector r=r>(c=B(b[i],b[k]))?c:r; ^ user.c:28:24: error: subscripted value is neither array nor pointer nor vector r=r>(c=B(b[i],b[k]))?c:r; ^ user.c: In function ‘main’: user.c:32:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmap.in","r",stdin),freopen("cmap.out","w",stdout),scanf("%d",&n); ^ user.c:32:38: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmap.in","r",stdin),freopen("cmap.out","w",stdout),scanf("%d",&n); ^ user.c:32:67: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmap.in","r",stdin),freopen("cmap.out","w",stdout),scanf("%d",&n); ^ user.c:34:11: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld",&a[i].x,&a[i].y); ^