Add Two Numbers In Rust

In this article, we will explore how to add two numbers in Rust, a modern systems programming language from Mozilla. This simple operation allows you to understand some basic features and syntax of Rust.

Code Snippet

Firstly, we will begin with a simple piece of code that adds two numbers in Rust.

fn main() {
    let num1 = 5;
    let num2 = 10;

    let sum = num1 + num2;

    println!("The sum of {} and {} is {}", num1, num2, sum);
}

Code Explanation

Let’s go through the code step by step to understand it better.

The first line, fn main() { declares the main function area which is the starting point for any Rust program.

Next, we declare two integer variables, num1 and num2, and assign them the values 5 and 10 respectively. This is done by saying let num1 = 5; and let num2 = 10;. The let keyword is used for declaring or initializing variables.

The line let sum = num1 + num2; is where the addition operation happens. Here, a new variable called sum is initialized and it’s assigned the value of num1 + num2, i.e., the addition of the values stored in num1 and num2.

Finally, we output the result on the console with the line println!("The sum of {} and {} is {}", num1, num2, sum);. The println! macro is used for printing to the system console. The {} within the string are placeholders for variables, and these variables are passed in the order they should appear at the end of the statement.

And there you have it, a simple program to add two numbers in Rust! This program represents some of the fundamental aspects of programming - working with variables and doing arithmetic operations.