C++ Pointer Access value using pointers

#include <iostream>
using namespace std;
int main()//from w  w  w  .  jav  a  2 s . co m
{
   int var1, var2;
   int* ptr;                //pointer to integers
   ptr = &var1;             //set pointer to address of var1
   *ptr = 37;               //same as var1=37
   var2 = *ptr;             //same as var2=var1
   cout << var2 << endl;    //verify var2 is 37
   return 0;
}