c#继承中的函数调用实例

2020-01-24 02:11:28

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本文实例讲述了c#继承中的函数调用方法，分享给大家供大家参考。具体分析如下：

首先看下面的代码:

using System;

namespace Test
{
    public class Base
    {
        public void Print()
        {
            Console.WriteLine(Operate(8, 4));
        }

        protected virtual int Operate(int x, int y)
        {
            return x + y;
        }
    }
}

namespace Test
{
    public class OnceChild : Base
    {
        protected override int Operate(int x, int y)
        {
            return x - y;
        }
    }
}

namespace Test
{
    public class TwiceChild : OnceChild
    {
        protected override int Operate(int x, int y)
        {
            return x * y;
        }
    }
}

namespace Test
{
    public class ThirdChild : TwiceChild
    {
    }
}

namespace Test
{
    public class ForthChild : ThirdChild
    {
        protected new int Operate(int x, int y)
        {
            return x / y;
        }
    }
}

namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            Base b = null;
            b = new Base();
            b.Print();
            b = new OnceChild();
            b.Print();
            b = new TwiceChild();
            b.Print();
            b = new ThirdChild();
            b.Print();
            b = new ForthChild();
            b.Print();
        }
    }
}