c1-04.cs

一本很好的教材.C#开发者必备.内容全面,很难得哦.

 // 多态性示例
 using System;
 class Employee
 {
	public virtual void Call()
	{
		Console.WriteLine("类Employee的执行结果：我是明寰资讯公司的员工。");
	}
}
class Engineer : Employee
{
	public override void Call()
	{
		Console.WriteLine("类Engineer的执行结果：我是明寰资讯公司的工程师。");
	}
}
class Salesman : Employee
{
	public override void Call()
	{
		Console.WriteLine("类Salesman的执行结果：我是明寰资讯公司的业务员。");
	}
}
class EmployeeApp
{
	public static void Main()
	{
		Employee emp = new Employee();
		emp = new Employee();
		emp.Call();
		emp = new Engineer();
		emp.Call();
		emp = new Salesman();
		emp.Call();
	}
}