9-2.txt

C#实验报告 C#实验报告 C#实验报告 C#实验报告 C#实验报告 C#实验报告 C#实验报告

using System;
class Vehicle       //定义汽车类
{
           public   int wheels;   //公有成员：轮子个数
           protected   float weight;
           public  Vehicle() {;};
           public  Vehicle(int w, float g)
           {
                     wheels = w;
                     weight = g;
           }
           public void Speak() 
           {
                     Console.WriteLine("the w vehicle is speaking!");
           }
}

class Car:Vehicle  //定义轿车类
{
           int passengers;          //私有成员：乘客数
           public Car(int w, float g, int p) 
           {
                      wheels = w;
                      weight = g;
                      passengers =p;
           }
           new public void Speak() 
           {
                      Console.WriteLine("Di-di!");
           }
}