Pointer to Pointer

Medium Pointers
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Problem Statement

Write a C program to demonstrate a pointer to a pointer (double pointer) to modify or access an integer variable value.

Input Format

A single integer N.

Output Format

Print the value using a double pointer.

Constraints

-100000 <= N <= 100000

Sample Input

77

Sample Output

77

Explanation

Double pointer **pptr points to *ptr which points to integer N.

Starter Code

#include <stdio.h>

int main() {
    int n;
    if (scanf("%d", &n) == 1) {
        // Write your code here
    }
    return 0;
}

Limits

  • Time Limit: 1s
  • Memory Limit: 256MB

Embedded C Programming

Updated: March 15, 2026
Intermediate

Embedded systems rely on efficient low-level programming to interact directly with hardware. In this course, you will learn how to write practical Embedded C programs used in real microcontroller-based systems. Rather than focusing only on theory, this course follows a practice-driven approach. Each lesson includes hands-on coding exercises that simulate real firmware development tasks used