Compilare: user.c: In function ‘main’: user.c:35:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while(k=!p); ^ user.c:13:25: warning: unused variable ‘a’ [-Wunused-variable] unsigned long long a[100]; ^ user.c:11:24: warning: unused variable ‘s’ [-Wunused-variable] int p, n, k, m, i, s; ^ user.c:11:21: warning: unused variable ‘i’ [-Wunused-variable] int p, n, k, m, i, s; ^ user.c:11:18: warning: unused variable ‘m’ [-Wunused-variable] int p, n, k, m, i, s; ^ user.c:20:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d", &p); ^