Compilare: user.c: In function ‘main’: user.c:21:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("iepuri.in","r",stdin),freopen("iepuri.out","w",stdout),scanf("%d",&t); ^ user.c:21:43: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("iepuri.in","r",stdin),freopen("iepuri.out","w",stdout),scanf("%d",&t); ^ user.c:21:74: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] freopen("iepuri.in","r",stdin),freopen("iepuri.out","w",stdout),scanf("%d",&t); ^ user.c:23:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d%d",&x,&y,&z,&a,&b,&c,&n); ^