/* File: pointers.c

   A simple program that uses pointers.
*/

#include <stdio.h>
#include "genlib.h"
#include "simpio.h"

main () {
   int a = 1, b = 2, c = 3 ;

   /* These are pointer declarations */
   int *ptr1, *ptr2 ;

   ptr1 = &a ;
   printf("a = %d, &a = %d, ptr1 = %d, *ptr1 = %d\n",
     a, &a, ptr1, *ptr1) ;
   
   ptr1 = &b ;
   printf("b = %d, &b = %d, ptr1 = %d, *ptr1 = %d\n",
     b, &b, ptr1, *ptr1) ;

   *ptr1 = 35 ;
   printf("b = %d, &b = %d, ptr1 = %d, *ptr1 = %d\n",
     b, &b, ptr1, *ptr1) ;

   ptr2 = ptr1 ;
   *ptr2 = 17 ;
   printf("b = %d, &b = %d, ptr1 = %d, *ptr1 = %d\n",
     b, &b, ptr1, *ptr1) ;
}

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a = 1, &a = 2147469132, ptr1 = 2147469132, *ptr1 = 1
b = 2, &b = 2147469128, ptr1 = 2147469128, *ptr1 = 2
b = 35, &b = 2147469128, ptr1 = 2147469128, *ptr1 = 35
b = 17, &b = 2147469128, ptr1 = 2147469128, *ptr1 = 17