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ptr++

After the above operation, the ptr will point to the location 1004 because each time ptr is
incremented, it will point to the next integer location which is 4 bytes next to the current location.
This operation will move the pointer to the next memory location without impacting the actual
value at the memory location. If ptr points to a character whose address is 1000, then the above
operation will point to the location 1001 because the next character will be available at 1001.

Incrementing a Pointer
We prefer using a pointer in our program instead of an array because the variable pointer
can be incremented, unlike the array name which cannot be incremented because it is a constant
pointer. The following program increments the variable pointer to access each succeeding element
of the array:

#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;
for ( i = 0; i < MAX; i++)
{

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

/* move to the next location */

ptr++;
}
return 0;

}

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