Compilare: user.c: In function ‘main’: user.c:44:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("alegeri.in", "r", stdin); ^ user.c:45:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("alegeri.out", "w", stdout); ^ user.c:48:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &t); ^ user.c:51:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i%i", &n, &m); ^ user.c:56:18: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i%i%i", &x, &E[i].from, &E[i].to); ^ user.c:59:23: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] else scanf("%i", &E[i].cost); ^