Compilare: user.c: In function ‘afis’: user.c:58: warning: format ‘%lld’ expects type ‘long long int *’, but argument 2 has type ‘int *’ user.c:56: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:57: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:58: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:61: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result