#![allow(unused_variables)]
fn main() {
    use std::sync::Arc;
    use std::sync::atomic::{AtomicUsize, Ordering};
    use std::thread;
    let val = Arc::new(AtomicUsize::new(5));
    for _ in 0..10 {
        let val = Arc::clone(&val);
        thread::spawn(move || {
            let v = val.fetch_add(1, Ordering::Relaxed);
            println!("{v:?}");
        });
    }
}