C++ Pointer as address variables

#include <iostream>
using namespace std;
int main()//from w  w  w. ja  v a 2 s . co  m
{
   int var1 = 11;
   int var2 = 22;
   cout << &var1 << endl      //print addresses of variables
        << &var2 << endl << endl;
   int* ptr;                  //pointer to integers
   ptr = &var1;               //pointer points to var1
   cout << ptr << endl;       //print pointer value
   ptr = &var2;               //pointer points to var2
   cout << ptr << endl;       //print pointer value
   return 0;
}