指向指针的指针

#include <iostream>

using namespace  std;

int main()
   {
     int var=1988;
     int *p1=NULL;
     int **p2=NULL;



     p1=&var;

     p2=&p1;

     cout<<"p1的值="<<p1<<endl;

     cout << "var="<<var<<endl;
     cout<<"*p1="<<*p1<<endl;
     cout<<"**p2="<<**p2<<endl;

}

p1的值=0x7fffaa672524
var=1988
*p1=1988
**p2=1988