Loop

Iteration using loop:

src/05-loop/main.rs

fn main() {
    // loop and break
    let mut count = 5;
    loop {
        println!("{count}");
        count -= 1;

        if count < 0 {
            println!("Blast off.");
            break;
        }
    }
}

While loop

src/05-while-loop/main.rs

use std::thread::sleep;
use std::time::Duration;

fn main() {
    let mut count = 5;
    let time = Duration::from_secs(1);

    while count > 0 {
        println!("{count}");
        sleep(time);
        count -= 1;
    }

    println!("LIFTOFF!!!");
}

For loop

src/05-for-loop/main.rs

fn main() {
    for number in (0..6).rev() {  
        // (0..6) is same as (0..=5)
        // increment by step (2..=10).step_by(2)
        println!("{number}");
    }
    println!("LIFTOFF!!!");
}

List enumeration

src/05-list-enum/main.rs

fn main() {
    let list = ["apple", "banana", "orange"];

    for item in list {
        println!("{item}");
    }
}