###### tags: `Note`

# Hello, World!

## Using `rustc`

Creating new file named `main.rs` and writing the code to `main.rs`.

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

Then, running following commands to **compile** the file and run it.

$ rustc main.rs
$ ./main
Hello, world!

:::info
The function `main` is entrypoint of rust programe.
:::

## Using Cargo

$ cargo new hello_cargo
$ cd hello_cargo