program.cs

来自「c#开发宝典 光盘内容。本光盘主要为书中的源程序」· CS 代码 · 共 40 行

using System;
using System.Collections.Generic;
using System.Text;

namespace Example10_18 {
    class Program {
        static void Main(string[] args) {
            Student myStudent = new Student();

            //检测myStudent变量是否是Student类型的变量
            if (myStudent is Student) {
                Console.WriteLine("myStudent变量是Student类型的变量！");
            } else {
                Console.WriteLine("myStudent变量不是Student类型的变量！");
            }

            //检测myStudent变量是否是People类型的变量
            if (myStudent is People) {
                Console.WriteLine("myStudent变量是People类型的变量！");
            } else {
                Console.WriteLine("myStudent变量不是People类型的变量！");
            }

            Console.ReadLine();
        }
    }

    /// <summary>
    /// 接口People
    /// </summary>
    interface People {
    }

    /// <summary>
    /// People的子类Student类
    /// </summary>
    class Student : People {
    }
}