Learning rust – guess number code

Why rust?
– Fast
– Reliable
– Deep WASM integration
– https://aws.amazon.com/blogs/opensource/sustainability-with-rust/

use std::io;
use rand::Rng;
use std::cmp::Ordering;

fn main() {
    println!("Guess the number:");
    let secret_number = rand::thread_rng().gen_range(1..101);
    loop {

    
    println!("Please input your guess.");
    let mut guess = String::new();

    io::stdin()
        .read_line(&mut guess)
        .expect("fail to read line");

    
    let guess: u32 = match guess.trim().parse() {
        Ok(num) => num,
        Err(_) => continue,
    };
    println!("You guess : {}",guess);
    match guess.cmp(&secret_number) {
        Ordering::Less => println!("Too small!"),
        Ordering::Greater => println!("Too big!"),
        Ordering::Equal => {
            println!("You win!");
            break;
        }
    }
    }
}

• It calls main function by default.
• can accept parameter in ()
• &mut guess uses reference rather value
  

Want to get started with Rust?

https://doc.rust-lang.org/book/title-page.html