C#继承与多态编程练习.doc

实验报告姓名： 学号： 日期： 2012年11月15日 实验名称： 实验一 继承与多态编程练习 成绩： 一、实验目的及要求实验目的：1.理解面向对象思想，体会面向对象思想在编程中的应用；2.掌握Visual C#.NET类的创建（成员，方法，属性），类的继承，类的多态性及类的方法的重载。3. 理解继承的含义，掌握派生类的定义方法和实现；4. 编写体现类的继承性（成员变量，成员方法，成员变量隐藏）的程序；5. 编写体现类多态性（成员方法重载，构造方法重载）的程序。实验要求：1.写出程序，并调试程序，要给出测试数据和实验结果。2.整理上机步骤，总结经验和体会。3.完成实验日志和上交程序。二、实验环境Windows XP操作系统，Visual 2005三、实验源程序及关键代码解释1.员工类：using System;using System.Collections.Generic;using System.Text; class Program static void Main(string args) Employee e1=new Employee (EVE,F,6000,2014年7月25日,信息部,123456789); e1.display (); Leader l1= new Leader(EVE,F,6000,2014年7月25日,信息部,123456789,主管, 2015年10月29日, 20); l1 .display (); class Employee protected string name; protected string sex; protected int salary; protected string date; protected string department; protected string tel; public Employee (string name,string sex,int salary,string date,string department,string tel) =name; this .sex =sex ; this .salary =salary ; this .date =date ; this .department =department ; this .tel =tel ; public virtual void display() System .Console .WriteLine(姓名：0,name ); System .Console .WriteLine(性别：0,sex ); System .Console .WriteLine(工资：0,salary ); System .Console .WriteLine(入职日期：0,date ); System .Console .WriteLine(所属部门：0,department ); System .Console .WriteLine(联系电话：0,tel ); class Leader:Employee private string post; private string risedate; private int numb; public Leader (string name,string sex,int salary,string date,string department,string tel,string post,string risedate,int numb):base(name,sex,salary,date,department,tel) this .post =post ; this .risedate =risedate ; this.numb =numb ; public override void display() base.display(); System .Console .WriteLine(提职后信息如下： ); System .Console .WriteLine(职位：0,post ); System .Console .WriteLine(提职时间：0,risedate ); System .Console .WriteLine(管理人数：0,numb ); 2.书店类using System;using System.Collections.Generic;using System.Text;namespace ConsoleApplication8 class Program static void Main(string args) TextBook T1=new TextBook (平凡的世界,路遥,100,5); T1.display(); class TextBook private string Title; private string Author; private double Cost; private int Quantity; private double Price; public TextBook (string Title,string Author,double Cost,int Quantity) this .Title =Title ; this .Author =Author ; this .Cost =Cost ; this .Quantity =Quantity ; Price =1.25*Cost /Quantity ; public void display() System.Console.WriteLine(书的信息如下：); System .Console .WriteLine(书名：0,Title ); System .Console .WriteLine(作者：0,Author ); System .Console .WriteLine(批发费用：0,Cost ); System .Console .WriteLine(库存量：0,Quantity ); System .Console .WriteLine(零售价：0,Price ); 3.雇员类using System;using System.Collections.Generic;using System.Text;namespace ConsoleApplication9 class Program static void Main(string args) Programmer P1=new Programmer (张三,北辰区,1991.10.29,4000,1000); System .Console .WriteLine (程序员的工资为：0,P1.salary (); Exacute E1=new Exacute (李四,和平区,1990.2.26,5000,2000); System .Console .WriteLine (高管的工资为：0,E1.salary(); Secretary S1=new Secretary(王五,河北区,1991.1.1,3000); System .Console .WriteLine (秘书的工资为：0,S1 .salary(); Worker W1=new Worker(赵六,河东区,1992.2.2,1000); System .Console .WriteLine (清洁工的工资为：0,W1 .salary(); abstract class Employee private string name; private string add; private string birthday; public Employee(string name, string add, string birthday) = name; this.add = add; this.birthday = birthday; public abstract int salary(); class Programmer : Employee private int t,s; public Programmer(string name, string add, string birthday,int s,int t):base(name,add,birthday) this.t=t; this.s=s; public override int salary() return (s + t); class Exacute : Employee private int t,s; public Exacute(string name, string add, string birthday,int s,int t):base(name,add,birthday) this.t=t; this.s=s; public override int salary() return (s + t); class Secretary : Employee private int s; public Secretary(string name, string add, string birthday,int s):base(name,add,birthday) this.s=s; public override int salary() return (s); class Worker : Employee private int s; public Worker(string name, string add, s