Compilare: main.c: In function 'main': main.c:4:3: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("ksecv3.in", "r", stdin); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:5:3: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("ksecv3.out", "w", stdout); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:8:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &k); ^~~~~~~~~~~~~~~~~~~~~ main.c:10:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^~~~~~~~~~~~~~~ main.c:14:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &k); ^~~~~~~~~~~~~~~~~~~~~ main.c:16:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^~~~~~~~~~~~~~~ main.c:26:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &k); ^~~~~~~~~~~~~~~~~~~~~ main.c:28:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^~~~~~~~~~~~~~~