Compilare: main.c: In function 'main': main.c:8:4: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen ("borcane.in", "r", stdin); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:9:4: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen ("borcane.out", "w", stdout); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:10:4: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &n); ^~~~~~~~~~~~~~~~ main.c:12:7: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &v[i]); ^~~~~~~~~~~~~~~~~~~