Pointer Basics

Easy Pointers
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Problem Statement

Write a C++ program that declares an integer variable, assigns a value, uses a pointer to store its memory address, and prints the value by dereferencing the pointer.

Input Format

A single integer N.

Output Format

Print the value accessed via the pointer.

Constraints

-100000 <= N <= 100000

Sample Input

123

Sample Output

123

Explanation

Pointers store memory addresses of variables and allow indirect access using the dereference operator (*).

Starter Code

#include <iostream>

int main() {
    int n;
    if (std::cin >> n) {
        int *ptr = &n;
        // Write your code here to print value via ptr
    }
    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