static void Main(string[] args)
        {
            Console.WriteLine("我肚子餓了,好想吃東西,要吃甚麼呢?");
            Console.WriteLine("選擇餐廳類型 1:鼎泰豐 2:一蘭拉麵 3:孫東寶");
            int 餐廳類型 = Convert.ToInt32(Console.ReadLine());
            吃飯  eat  = new 吃飯();
            餐廳  rest = eat.選擇餐廳(餐廳類型);

            Console.WriteLine("我選擇的餐廳是:" + rest.name);
            eat.去餐廳(rest);
            Console.WriteLine("歡迎光臨" + rest.name + ",請問您要吃甚麼呢?:");
            string meal = Console.ReadLine();
            菜單     menu = new 菜單();

            menu.selected = meal;
            eat.點餐(menu);
            Console.WriteLine("好的,請您稍微等待幾分鐘,我們馬上為您上菜:");
            eat.等待(5);
            eat.吃();
            Console.WriteLine("服務生,我要結帳了,請問多少錢? 300  元");
            int payMoney = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("您要用甚麼方式支付呢? 現金,Apple pay, Line Pay, Send 3 Pay");
            string payType = Console.ReadLine();

            eat.付錢(payMoney, payType);
            Console.WriteLine("謝謝光臨,歡迎下次再來唷!");
            eat.離開();
        }
        public 餐廳 選擇餐廳(int 餐飲類別)
        {
            餐廳 _rest = new 餐廳();

            switch (餐飲類別)
            {
            case 1:
                _rest = new 鼎泰豐();
                break;

            case 2:
                _rest = new 一蘭();
                break;

            case 3:
                _rest = new 孫東寶();
                break;

            default:
                _rest = new 一蘭();
                break;
            }
            return(_rest);
        }
 public void 去餐廳(餐廳 rest)
 {
     //go().....
     Console.WriteLine("餐廳 店名:" + rest.name + "地址是: " + rest.address);
 }