c#继承中的函数调用实例

作者: 北方的狼72913907
来源: 51数据库
2021-11-10

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:

复制代码代码如下:

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();
        }
    }
}