我如何实现类和接口？ [英] How do I implement classes and interfaces?

问题描述

以下信息来自visual visual c＃2012一书。我试图从这些信息实现类和接口。我试着做但却失败了。有没有办法在界面中声明速溶，牛奶，糖和描述，并分别在类咖啡和茶类中声明beantype或leaftype。



<< Interface>> CupOfCoffee - IHotDrink（接口）

IHotDrink + BeanType：string

--------------

+瞬间：bool CupOfTea - IHotDrink（接口）

+ Milk：bool + LeafType：string

+ Sugar：byte

+描述：String < br $> b $ b

The following information is from "beginning visual c#2012" book. I am trying to implement the classes and interface from these information. I tried to do it but failed. Is there a way to declare instant, milk, sugar and description in interface and declare beantype or leaftype in class coffee and class tea respectively.

<<Interface>> CupOfCoffee - IHotDrink(Interface)
IHotDrink + BeanType:string
--------------
+Instant: bool CupOfTea - IHotDrink (Interface)
+Milk : bool + LeafType:string
+Sugar : byte
+Description : String

namespace Interfaces
{
    interface IHotDrink
    class Coffee: IHotDrink
    {
        public string BeanType;
        public string Description;
        public string Sugar;
        public string Milk;
    }
    class Tea: IHotDrink
    {
        public string LeafType;
        public string Description;
        public string Sugar;
        public string Milk;
    }
    class Program
    {
        static void PrintInfo(IHotDrink item)
        {
            Console.WriteLine("BeanType: {0}, Description: {1}, Sugar: {2}, Milk:  {3}",item.BeanType, item.Description, item.Sugar,
                item.Milk);
        }
        static void PrintInfo(Tea item)
        {
            Console.WriteLine("LeafType: {0}, Description: {1}, Sugar: {2}, Milk:  {3}", item.LeafType, item.Description, item.Sugar,
                item.Milk);
        }
        static void Main()
        {
            Coffee c = new Coffee() { BeanType = "Medium Roast", Description = "Large", Sugar ="No", Milk = "Yes"  };
            Tea t = new Tea() { LeafType = "Green", Description = "Small", Sugar = "No", Milk = "Yes" };
            PrintInfo(c);
            PrintInfo(t);
        }
    }
}

推荐答案

这篇关于我如何实现类和接口？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！