“karat menciptakan sifat turun” Kode Jawaban

karat menciptakan sifat turun

#[macro_use]
extern crate hello_world_derive;

trait HelloWorld {
    fn hello_world();
}

#[derive(HelloWorld)]
struct FrenchToast;

#[derive(HelloWorld)]
struct Waffles;

fn main() {
    FrenchToast::hello_world();
    Waffles::hello_world();
}