// while
//
// https://doc.rust-lang.org/book/while-loops.html
//

fn main()
{

        let mut x = 5; // mut x: u32
        let mut done = false; // mut done: bool

        while !done {
                x += x - 3;

                println!("{}", x);

                if x % 5 == 0 {
                        done = true;
                }
        }
}