C++实验报告九

1、VC+程序设计实验报告 实验九题目：继承与派生 专 业 学 生 姓 名 班 级 学 号 指 导 教 师 指 导 单 位 日 期 教师评语 教师签名： 年 月 日成绩评定备 注一、实验目的1. 理解类的继承概念，能够定义和使用类的继承关系2掌握派生类的声明与定义方法3. 掌握公有、私有和保护派生的访问特性二、实验内容1. 设计一个大学的类系统，学校有学生、老师、职员，每种人员都有自己的特性，他们之间又有相同的地方。利用继承机制定义这个系统中的各个类及类上的必须操作。2. 假定车可分为货车、客车又可分为轿车、面包车和公共汽车。请设计相应的类层次结构并加以实现。三、实验结果及其结果分析1.(1)源程

2、序：#include <iostream.h>#include <string.h>class Personprotected:char m_strName10;int m_nSex;int m_nAge;public:Person(char *name,int age,char sex)strcpy(m_strName, name);m_nSex= (sex='m'?0:1 );m_nAge = age;void setName(char *name)strcpy(m_strName, name);void setSex(int sex)m_nSex=

3、 (sex='m'?0:1 );void setAge(int age)m_nAge = age;char * getName()return m_strName;int getAge()return m_nAge;int getSex()return m_nSex;void ShowMe()cout<<" 姓 名："<<m_strName<<endl;cout<<" 性 别："<<(m_nSex=0?"男":"女")<<end

4、l;cout<<" 年 龄："<<m_nAge<<endl;class Teacher : public Personchar m_strDept20;int m_fSalary;public:Teacher(char *name,int age,char sex,char *dept,int salary):Person(name,age,sex) strcpy(m_strDept, dept); m_fSalary = salary;void ShowMe() Person:ShowMe();cout<<" 工作

5、单位："<<m_strDept<<endl;cout<<" 月 薪："<<m_fSalary<<endl;void setSalary(int salary)m_fSalary = salary;int getSalary()return m_fSalary;class Student : public Personchar m_strID12;char m_strClass12;public:Student(char *name,int age,char sex,char *ID,char *Class

6、):Person(name,age,sex)strcpy(m_strID, ID); strcpy(m_strClass, Class);void ShowMe()cout<<" 学 号："<<m_strID<<endl;Person:ShowMe();cout<<" 班 级："<<m_strClass<<"n"void setID(char * ID)strcpy(m_strID, ID);void setClass(char *Class) strcpy(m_

7、strClass, Class);char* getID()return m_strID;char* getClass()return m_strClass;class Employee:public Personint m_fSalary;public:Employee(char *name,int age,char sex,int salary):Person(name,age,sex)m_fSalary = salary;void setSalary(int salary)m_fSalary = salary;int getSalary()return m_fSalary;void Sh

8、owMe()Person:ShowMe();cout<<" 工 资："<<m_fSalary<<"n"void main()Teacher teacher1("周明",38,'m',"计算机系",3800);Student std1("王芳",20,'f',"03016003","计算机03");Employee emPloyee1("李鑫",25,'f'

9、;,2000);teacher1.ShowMe();cout<<"-"<<endl;std1.ShowMe();cout<<"-"<<endl;emPloyee1.ShowMe();teacher1.setAge(40);teacher1.setSalary(4500);std1.setAge(21);emPloyee1.setAge(26);emPloyee1.setSalary(2000);cout<<"-"<<endl;cout<<"修

10、改各类人员的属性后："<<endl;teacher1.ShowMe();cout<<"-"<<endl;std1.ShowMe();cout<<"-"<<endl;emPloyee1.ShowMe();（2）实验结果： 2.(1)源程序：#include<iostream.h>class vehicle/ 定义基类vehiclepublic: / 公有函数成员 vehicle(int in_wheels,float in_weight); / 给数据成员初始化 int ge

11、t_wheels(); / 获取车轮数 float get_weight(); / 获取汽车重量 void setWeels(int wls); void setWeight(float wt); void display() cout<<"车轮数："<<wheels<<" 汽车重量："<<weight<<endl; private: / 私有数据成员 int wheels; / 车轮数 float weight; / 表示汽车承重;vehicle:vehicle(int in_wheels,f

12、loat in_weight)wheels = in_wheels;weight = in_weight;float vehicle:get_weight()return weight;int vehicle:get_wheels()return wheels;void vehicle:setWeels(int wls)wheels = wls;void vehicle:setWeight(float wt)weight = wt;class truck:public vehicle / 定义货车类truckprivate: / 新增私有数据成员 float weight_load; / 承重

13、public: / 新增公有成员函数 truck(int wheel,float wt,float wl):vehicle(wheel,wt) weight_load = wl; float getLoads() return weight_load; void display() vehicle:display(); cout<<"汽车承重"<<weight_load<<endl; ;/车和客车，客车又可分为轿车、面包车和公共汽车class car:public vehicle/ 定义客车类car int passenger_load;

14、 / 新增私有数据成员，表示载客数public: / 新增公有成员函数car(int in_wheels,float in_weight,int people=4):vehicle(in_wheels,in_weight)passenger_load = people;int getPassengers()return passenger_load;void setPassengers(int people)passenger_load = people;void display() vehicle:display(); cout<<"载客数："<<

15、passenger_load<<endl;void main()truck truck1(8,400,100000);/ 货车car car1(4,20);/ 客车car saloon_car(4,10,5);/ 轿车car microbus(6,10,18);/ 面包车car bus(6,20,30);/ 公共汽车/ 显示相关信息truck1.display();cout<<"-"<<endl;car1.display();cout<<"-"<<endl;saloon_car.display();cout<<"-"<<endl;