class Test {
    public static void main(String[] args) {
	Honkable[] arr = new Honkable[3];
	arr[0] = new Car();
	arr[1] = new Goose();
	arr[2] = new Car();
	for (Honkable h : arr) {
	    System.out.println(h.honk(3));
	}
    }
}