Compilare: user.c: In function ‘main’: user.c:9:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(argc >= 2 ? argv[1] : "stirling.in", "r", stdin); ^ user.c:10:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(argc >= 3 ? argv[2] : "stirling.out", "w", stdout); ^ user.c:29:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &T); ^ user.c:32:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &t, &n, &m); ^