fn add(x : i32, y : i32) -> i32 {
    let mut a = x;
    a += 12;
    a + y
}

fn print_twice(snake : &str){
    println!("{}", snake);
    println!("{}", snake);
}

/*
 * This is a comment
 */

fn main(){
    let mut z = add(100, 37);
    println!("Z = {}", z);
    z += 5;

    if z == 137 {
        println!("Math works today!");
    }


    print_twice("test");

}