Compilare: user.c: In function ‘mi’: user.c:26:9: warning: unused variable ‘d’ [-Wunused-variable] int d=gcd(a,MOD); ^ user.c: In function ‘main’: user.c:38:10: warning: unused variable ‘ok’ [-Wunused-variable] char ok=1; ^ user.c:33:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("cabana.in","r",stdin); ^ user.c:34:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("cabana.out","w",stdout); ^ user.c:40:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i",&t); ^ user.c:42:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lli%i",&n,&k); ^