c 2b 2b pointer arithmetic

1#include <iostream>
2
3using namespace std;
4const int MAX = 3;
5
6int main () {
7   int  var[MAX] = {10, 100, 200};
8   int  *ptr;
9
10   // let us have array address in pointer.
11   ptr = var;
12   
13   for (int i = 0; i < MAX; i++) {
14      cout << "Address of var[" << i << "] = ";
15      cout << ptr << endl;
16
17      cout << "Value of var[" << i << "] = ";
18      cout << *ptr << endl;
19
20      // point to the next location
21      ptr++;
22   }
23   
24   return 0;
25}

1#include <stdio.h>
2
3const int MAX = 3;
4
5int main () {
6
7   int  var[] = {10, 100, 200};
8   int  i, *ptr;
9
10   /* let us have array address in pointer */
11   ptr = &var[MAX-1];
12	
13   for ( i = MAX; i > 0; i--) {
14
15      printf("Address of var[%d] = %x\n", i-1, ptr );
16      printf("Value of var[%d] = %d\n", i-1, *ptr );
17
18      /* move to the previous location */
19      ptr--;
20   }
21	
22   return 0;
23}