Simple Program for Pointer and Array Example in C


Overview

  • Array Pointer Assignment : pointer_variable = &var[position];
  • pointer_variable++ is increasing Address value based on Data Type
  • pt++; --> Its locate next position of Array

for example,

Array Pointer Assignment
pt = &var[0];
pt++;
now pt++ points var[1] of address.

Syntax

Array Pointer Assignment
pointer_variable = &var[position];


pointer_variable++ is increasing Address value based on Data Type
pt++; --> Its location next position of Array

Simple Program for Pointer and Array Example

/* Simple Program for Pointer and Array Example in C*/
/* Pointer and Array Program,C Pointer Examples */

#include <stdio.h>

#define MAX_SIZE 5

int main() {

  int var[] = {10, 20, 30, 40, 50};
  int i = 0;

  //Pointer Variable Declaration for Integer Data Type 
  int *pt;

  //& takes the address of var , Here now pt == &var, so *pt == var
  pt = &var[0];

  while (i < MAX_SIZE) {
    printf("Position : %d # Actual  : Value : %d , Address = %p \n", i, var[i], &var[i]);
    printf("Position : %d # Pointer : Value : %d , Address = %p \n\n", i, *pt, pt);
    i++;

    // pt++ is increasing Address value based on Data Type
    pt++;
  }

  return 0;
}

Sample Output

Position : 0 # Actual  : Value : 10 , Address = 0060FEF4
Position : 0 # Pointer : Value : 10 , Address = 0060FEF4

Position : 1 # Actual  : Value : 20 , Address = 0060FEF8
Position : 1 # Pointer : Value : 20 , Address = 0060FEF8

Position : 2 # Actual  : Value : 30 , Address = 0060FEFC
Position : 2 # Pointer : Value : 30 , Address = 0060FEFC

Position : 3 # Actual  : Value : 40 , Address = 0060FF00
Position : 3 # Pointer : Value : 40 , Address = 0060FF00

Position : 4 # Actual  : Value : 50 , Address = 0060FF04
Position : 4 # Pointer : Value : 50 , Address = 0060FF04