Generate random numbers

use rand::Rng;

fn main() {
  let mut rng = rand::thread_rng();
  let n1: u8 = rng.gen();
  let n2: u16 = rng.gen();
  println!("Random u8: {}", n1);
  println!("Random u16: {}", n2);
  println!("Random u32: {}", rng.gen::<u32>());
  println!("Random i32: {}", rng.gen::<i32>());
  println!("Random float: {}", rng.gen::<f64>());
}