Compilare: main.c: In function 'main': main.c:20:5: 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), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:20:40: 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), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:20:77: 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), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~