tokio interval

main.rs

use tokio::time; 

#[tokio::main]
async fn main() {
    let mut interval = time::interval(time::Duration::from_secs(1));
    let mut c = 10; 
    loop {
        interval.tick().await;
        println!("{c}");
        c = c - 1;
        if c == 0 {
            break;
        }
    }
    println!("Hello, world!");
}