Pointer

#include<iostream>
using namespace std;
int main()
{
    int *p,n,**q;
    p=&n;
    q=&p;
    cout<<"Enter a number:";
    cin>>n;
    cout<<"\n"<<n;
    cout<<"\n"<<p;
    cout<<"\n"<<*p;
    cout<<"\n"<<q;
    cout<<"\n"<<**q;
    return 0;
}