Src/main.rs

use std::sync::Mutex;
use std::thread;

fn main() {
let counter = Mutex::new(0);
let mut handles = vec![];

for _ in 0..10 {
let handle = thread::spawn(move || {
let mut num = counter.lock().unwrap();

*num += 1;
});
handles.push(handle);
}

for handle in handles {
handle.join().unwrap();
}

println!(“Result: {}”, *counter.lock().unwrap());
}