Rust Hello World Example

Welcome to the world of Rust! Rust is a systems programming language that runs blazingly fast, prevents segfaults, and guarantees thread safety.

In this guide, we'll take a look at how to get started with Rust by writing a simple "Hello, World!" program.

To get started with Rust, you'll need to install the Rust compiler and runtime on your machine.

You can do this by following the instructions on the Rust website: https://www.rust-lang.org/tools/install.

Once you have Rust installed, you can create a new Rust project by running the following command in your terminal:

cargo new hello_world

This will create a new Rust project with the default directory structure and files.

The main file for a Rust project is called main.rs, and it's located in the src directory.

Open the main.rs file in your favorite text editor and you'll see the following code:

fn main() {
    println!("Hello, world!");
}

This is the entry point for a Rust program. The main function is where the program starts executing.

Inside the main function, we use the println! macro to print a string to the console.

The ! at the end of the macro indicates that it's a macro, not a function.

To run this program, navigate to the project directory and run the following command:

cargo run

This will compile and run your Rust program, and you should see the following output:

Hello, world!

Congratulations! You've just written and run your first Rust program.

In summary, here's what you need to do to write a "Hello, World!" program in Rust:

Install the Rust compiler and runtime.
Create a new Rust project using cargo new.
Open the main.rs file in the src directory and write a main function that uses the println! macro to print a string to the console.
Run the program using cargo run.

With these steps, you'll be well on your way to exploring the power and efficiency of Rust.

Happy coding!