Compilare: user.c: In function ‘main’: user.c:4:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("datorii.in","r",stdin),freopen("datorii.out","w",stdout),scanf("%d%d",&n,&m); ^ user.c:4:41: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("datorii.in","r",stdin),freopen("datorii.out","w",stdout),scanf("%d%d",&n,&m); ^ user.c:4:73: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] freopen("datorii.in","r",stdin),freopen("datorii.out","w",stdout),scanf("%d%d",&n,&m); ^ user.c:6:11: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i]),a[i]+=a[i-1],j=i-(i&(-i)),c[i]=a[i]-a[j]; ^ user.c:8:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&x,&y,&z); ^