Compilare: user.c: In function ‘main’: user.c:44:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("toys.in", "r", stdin); ^ user.c:45:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("toys.out", "w", stdout); ^ user.c:47:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &n, &l, &m); ^ user.c:48:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d", &s, &x, &y, &z, &v); ^