Compilare: user.cpp: In function ‘int main()’: user.cpp:34:28: warning: variable ‘i’ set but not used [-Wunused-but-set-variable] unsigned long long n,p,i,a[20],k=0,b[10]; ^ user.cpp:34:30: warning: variable ‘a’ set but not used [-Wunused-but-set-variable] unsigned long long n,p,i,a[20],k=0,b[10]; ^ user.cpp:34:40: warning: variable ‘b’ set but not used [-Wunused-but-set-variable] unsigned long long n,p,i,a[20],k=0,b[10]; ^