Swap

Easy Functions
Solve in Playground →

Problem Statement

Write a C++ program defining a function `swapValues` that swaps two integers using pass-by-reference.

Input Format

Two integers A and B.

Output Format

Print swapped values of A and B separated by a space.

Constraints

-10000 <= A, B <= 10000

Sample Input

10 20

Sample Output

20 10

Explanation

Demonstrates pass-by-reference parameters to modify caller variables.

Starter Code

#include <iostream>

// Define swapValues function here

int main() {
    int a, b;
    if (std::cin >> a >> b) {
        // Call swapValues and print result
    }
    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