print.rs

#![allow(unused)]

#[derive(Debug)]
struct Lang {
    language: String,
    version: String,
}

fn main() {
    let lang = "rust";
    println!("hello {}!", lang);
    println!("hello {lang}!");

    let x = 2;
    println!("{0} x {0} = {1}", x, x * x);

    let rust = Lang {
        language: "rust".to_string(),
        version: "1.80".to_string(),
    };
    println!("{:?}", rust);
    println!("{:#?}", rust);
}