Compilare: user.c: In function ‘main’: user.c:53:5: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("iepuri.in", "r", stdin); ^ user.c:54:5: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("iepuri.out", "w", stdout); ^ user.c:56:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &t); ^ user.c:59:9: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld %lld %lld %lld %lld %lld %lld", &x, &y, &z, &a, &b, &c, &n); ^