fn greet(name: str, age: int) {
    let age_str: str = itoa(age);
    println(concat("hello, ", name));
    println(concat("you are ", age_str));
}

fn main() {
    greet("daniel", 37);
    greet("nina", 36);
    greet("amelia", 5);
    greet("margot", 3);
}