It's a convention to start learning a new programming language by writing a program that prints "Hello, World!" to the console.

In Rust, we can do this using the println! macro. The ! indicates that this is a macro rather than a function.

A macro is a way to write code that writes other code. Macros are a powerful feature of Rust that allow you to write code that writes code. This is useful for metaprogramming, which is the process of writing code that writes code.

The println! macro is used to print text to the console. It is similar to the println function in other programming languages, but it is a macro in Rust.

Here's how to print Hello to the console using the println! macro:

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

Write a program that prints "Hello, World!" to the console using the println! macro.

Hello, World!