#![allow(unused_variables)]
fn main() {
    let s = "hello";
    let third_character = s.chars().nth(2);
    assert_eq!(third_character, Some('l'));
    let s = "💖💖💖💖💖";
    let third_character = s.chars().nth(2);
    assert_eq!(third_character, Some('💖'));
}