FirstCoffeWithIce.ts

class EspressoIce extends Beverage {
  constructor() {
    super();
    this.description = "에스프레소~";
  }
  cost() {
    return 3500;
  }
}

class AmericanoIce extends Beverage {
  constructor() {
    super();
    this.description = "아이스 아메리카노~";
  }
  cost() {
    return 4500;
  }
}