A simple loading bar written in Rust

loading_bar.rs

use std::io::{stdout, Write};
use std::thread::sleep;
use std::time::Duration;

fn main() {
    let mut i: u32 = 0;

    while i <= 100 {
        print!("\r");
        print!("{{");

        for _ in 0..i {
            print!("#")
        }

        for _ in 0..(100 - i) {
            print!(" ")
        }

        print!("}} ");
        print!("{}%", i);

        sleep(Duration::from_secs(1));
        i += 1;
        stdout().flush().unwrap()
    }

    println!();
    println!("Finished!")
}