附录A培训实习生-面向对象基础(1):类和实例

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Text;
 4 
 5 namespace AnimalGames
 6 {
 7     class Cat
 8     {
 9         public string Shout()
10         {
11             return "瞄";
12         }
13     }
14 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Drawing;
 6 using System.Text;
 7 using System.Windows.Forms;
 8 
 9 namespace AnimalGames
10 {
11     public partial class Form1 : Form
12     {
13         public Form1()
14         {
15             InitializeComponent();
16         }
17 
18         private void button1_Click(object sender, EventArgs e)
19         {
20             Cat cat = new Cat();//将cat实例化
21             //注意:Cat cat = new Cat();其实做了两件事,
22             //Cat cat;声明一个Cat的对象,对象名是cat
23             //cat = new Cat();将此cat对象实例化
24             MessageBox.Show(cat.Shout());
25         }
26 
27     }
28 }