Compilare: user.c: In function ‘main’: user.c:14:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("radixsort.in","r",stdin), ^ user.c:15:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("radixsort.out","w",stdout), ^ user.c:16:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&n,&a,&b,&c),v[0]=b%c,t=(int*)malloc(n*sizeof(int)),r=sizeof(v[0]); ^