Compilare: user.c: In function ‘main’: user.c:7:5: warning: format ‘%d’ expects argument of type ‘int *’, but argument 2 has type ‘long long int *’ [-Wformat=] scanf("%d", &p); ^ user.c:34:13: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%ld",i); ^ user.c:5:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("fact.in", "r", stdin); ^ user.c:6:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("fact.out", "w", stdout); ^ user.c:7:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &p); ^