Compilare: user.cpp: In function ‘int main()’: user.cpp:18:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<n;j++) ^ user.cpp:8:32: warning: unused variable ‘pv’ [-Wunused-variable] unsigned long long int n,d,pv=1,pvc,im,p,cnt,c2=1,cr=0; ^ user.cpp:8:37: warning: unused variable ‘pvc’ [-Wunused-variable] unsigned long long int n,d,pv=1,pvc,im,p,cnt,c2=1,cr=0; ^ user.cpp:8:41: warning: unused variable ‘im’ [-Wunused-variable] unsigned long long int n,d,pv=1,pvc,im,p,cnt,c2=1,cr=0; ^