Compilare: user.c: In function ‘main’: user.c:16:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("recurenta2.in","r",stdin),freopen("recurenta2.out","w",stdout),scanf("%lld%lld%lld%lld%lld%lld",&a,&b,&c,&p,&r,&n), ^ user.c:16:47: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("recurenta2.in","r",stdin),freopen("recurenta2.out","w",stdout),scanf("%lld%lld%lld%lld%lld%lld",&a,&b,&c,&p,&r,&n), ^ user.c:16:82: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] freopen("recurenta2.in","r",stdin),freopen("recurenta2.out","w",stdout),scanf("%lld%lld%lld%lld%lld%lld",&a,&b,&c,&p,&r,&n), ^