Mastering C++ Basics: A Guide to Returning the Sum of Two Numbers

Learn How to Write a C++ Function to Add Two Numbers and Return Their Sum

2 min readJun 11, 2023

Introduction

In this tutorial, we’ll explore a C++ programming problem that involves adding two numbers and returning their sum. We’ll create a function that takes two numbers as arguments and returns their sum.

By the end of this post, you’ll have a better understanding of how to work with variables, data types, and functions in C++.

Step 1: Defining the Function

First, let’s define a function called addNumbers that takes two numbers as arguments:

int addNumbers(int num1, int num2)
{
  // Add the two numbers and return their sum
}

Step 2: Adding the Two Numbers and Returning Their Sum

We’ll use the + operator to add the two numbers and return their sum:

int addNumbers(int num1, int num2)
{
  return num1 + num2;
}

Putting It All Together

Here’s the complete code for the addNumbers function:

int addNumbers(int num1, int num2)
{
  return num1 + num2;
}