c7-01.cs

来自「一本很好的教材.C#开发者必备.内容全面,很难得哦.」· CS 代码 · 共 42 行

// 类的声明示例
using System;
public class Kid 
{
   private int age;
   private string name;
   // 缺省的构造函数
   public Kid() 
   {
      name = "N/A";
   }
   // 构造函数
   public Kid(string name, int age) 
   {
      this.name = name;
      this.age = age;
   }
   // 打印方法
   public void PrintKid() 
   {
      Console.WriteLine("{0}, {1} 岁。", name, age);
   }
}
public class MainClass 
{
   public static void Main() 
   {
      // 必须用new关键字实例化类
      Kid kid1 = new Kid("张三", 11);
      Kid kid2 = new Kid("李四", 10);
      // 用缺省的构造函数实例化类
      Kid kid3 = new Kid(); 
      // 输出结果
      Console.Write("小孩 #1: ");
      kid1.PrintKid();
      Console.Write("小孩 #2: ");
      kid2.PrintKid();
      Console.Write("小孩 #3: ");
      kid3.PrintKid();
   }
}