Reference Variables

Easy References
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Problem Statement

Write a C++ program declaring a reference variable that acts as an alias to an integer, and print its value through the reference.

Input Format

A single integer N.

Output Format

Print the value accessed via the reference variable.

Constraints

-100000 <= N <= 100000

Sample Input

250

Sample Output

Reference Value: 250

Explanation

Reference variables provide an alternative name (alias) to an existing object without separate memory allocation.

Starter Code

#include <iostream>

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