C语言递减指针

#include <stdio.h>

const int MAX = 3;

int main () {

   int  var[] = {10, 100, 200};
   int  i, *ptr;

   /* let us have array address in pointer */
   ptr = &var[MAX-1];

   for ( i = MAX; i > 0; i--) {

      printf("Address of var[%d] = %x/n", i-1, ptr );
      printf("Value of var[%d] = %d/n", i-1, *ptr );

      /* move to the previous location */
      ptr--;
   }

   return 0;
}