fn main()
{
  let thread_body = |n| {
    for i in 1..10 {
      println!("Thread{}, Count {}", n, i);
      std::thread::sleep(std::time::Duration::from_millis(100));
    }
  };
  let h = std::thread::spawn(thread_body);

  println!("Main thread, here!");
  h.join();
}