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When the above code is compiled and executed, it produces the following result:

Address of var[3] = bfedbcd8

Value of var[3] = 200
Address of var[2] = bfedbcd4

Value of var[2] = 100
Address of var[1] = bfedbcd0

Value of var[1] = 10

Pointer Comparisons
Pointers may be compared by using relational operators, such as ==, <, and >. If p1 and
p2 point to variables that are related to each other, such as elements of the same array, then p1 and
p2 can be meaningfully compared.
The following program modifies the previous example - one by incrementing the variable
pointer so long as the address to which it points is either less than or equal to the address of the
last element of the array, which is &var[MAX - 1]:

#include <stdio.h>

const int MAX = 3;

int main ()

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

int i, *ptr;

/* let us have address of the first element in pointer */
ptr = var;

i = 0;
while ( ptr <= &var[MAX - 1] )

{

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

/* point to the previous location */

ptr++;

10
7