Rust - Hello Foo

We use the let keyword to declare a varible. Thouh we don't have to, we can already assign a value to it using a single equal sign = as it is done in most programming languages.

In order to print to the sceeen we can use a pair of curly braces {} as a placeholder for the content of a variable in the println! macro. Behind that macro is another one called the format! macro where you can read more about the various options.

fn main() {
    let name = "Foo";
    println!("Hello {}, how are you?", name);
}

The output will look like this:

Hello Foo, how are you?

• let
• println!
• format!