01  #include<stdio.h>
02  
03  int main()
04  {
05  int x=10,y=20; //integer variables
06  
07  int *ptr; //integer pointer
08  
09  ptr= &x; // ptr points to 'x'
10  
11  printf("Value of X : %d n",*ptr);
12  
13  ptr=&y; //now ptr points to 'y'
14  
15  printf("Value of Y : %d n",*ptr);
16  
17  return 0;
18  }

 
 OUTPUT :
 
 Value of X : 10
 Value of Y : 20