Compilare: user.c: In function ‘main’: user.c:9:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv2.in","r",stdin); ^ user.c:10:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv2.out","w",stdout); ^ user.c:13:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^ user.c:18:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.c:31:11: warning: ‘ult’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d %d %d",prims+1,ult+1,smax); ^ user.c:31:11: warning: ‘prims’ may be used uninitialized in this function [-Wmaybe-uninitialized]