Compilare: user.c: In function ‘main’: user.c:101:13: warning: variable ‘diff’ set but not used [-Wunused-but-set-variable] int diff = 0; ^ user.c:87:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("sir7.in", "r", stdin); ^ user.c:88:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("sir7.out", "w", stdout); ^ user.c:91:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &t); ^ user.c:94:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i%lli%lli", &n, &max, &min); ^