Compilare: user.c: In function ‘main’: user.c:4:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("momente.in","r",stdin),freopen("momente.out","w",stdout),scanf("%d",&t); ^ user.c:4:44: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("momente.in","r",stdin),freopen("momente.out","w",stdout),scanf("%d",&t); ^ user.c:4:76: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] freopen("momente.in","r",stdin),freopen("momente.out","w",stdout),scanf("%d",&t); ^ user.c:14:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d%d%d%d%d",&l1,&z1,&h1,&m1,&s1,&l2,&z2,&h2,&m2,&s2); ^