Compilare: user.c: In function ‘main’: user.c:24:5: warning: format ‘%d’ expects argument of type ‘int *’, but argument 4 has type ‘long long unsigned int *’ [-Wformat=] scanf("%llu%llu%d",&a,&b,&p); ^ user.c:25:5: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long unsigned int’ [-Wformat=] printf("%d", power(a, b)%p ); ^ user.c:22:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(in, "r", stdin); ^ user.c:23:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(out, "w", stdout); ^ user.c:24:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%llu%llu%d",&a,&b,&p); ^