C++程序设计实验四-类的继承与派生

1、精选优质文档-倾情为你奉上精选优质文档-倾情为你奉上专心-专注-专业专心-专注-专业精选优质文档-倾情为你奉上专心-专注-专业成绩批阅日期台州学院电子与信息工程学院实验报告班级 学号 姓名 吴前斌 同组 实验课程： C+程序设计 实验项目： 类的继承与派生 实验日期： 2019 年 5 月 5 日主要内容（参考）预习简要（可选） 四、实验内容、方法、步骤一、实验目的和任务 五、实验数据记录与处理二、实验原理 六、实验结果分析、思考、心得三、实验器材 七、原始数据实验目的掌握继承与派生的关系及方法；在派生类构造函数中初始化基类成员；多重继承的方法。实验内容定义1个CPerson类，其属性有：姓名

2、、性别和年龄。从CPerson类派生出CStudent类，增加属性：学号、入学时间和入学成绩；从CPerson类派生出CTeacher类，添加属性：职务、部门和工作时间；由CStudent类派生出CGraduate类，添加属性：研究方向和导师；由CGraduate和CTeacher共同派生出在职研究生类CGradonWork对上述类分别定义其中的构造函数和输出函数，并在主函数中定义对象进行测试，测试的代码大致如下：CGradonWork gradonWork(tzcer,男,33,15,2003,335,computer,tangmin,jsj,sxxy,2002-8);gradonWork.

3、Print();其中CGradonWork 的构造函数参数分别对应的属性是一个在职的研究生对象，其姓名为tzcer，性别为男，33岁，学号15，2003年读在职，入学成绩335，就读计算机方向，其导师tangmin，同时tzcer也是sxxy部门，jsj专业的老师，2002-8月入职。 要求记录输出信息并说明实验步骤和解决方法！问题：何为继承二义性，在本实验中哪个地方存在二义性，你是如何解决的？定义形状类，其中基类为点类，圆类继承点类，圆柱体类继承圆类，计算面积、体积。建立一个建筑物类的层次体系。其中，基类building包括保护数据成员name（建筑物名称）、floors（层数）和areas

4、（总面积），由building类派生住宅类house和办公楼类office；住宅类house包括私有数据成员rooms（房间数）和balcony（阳台数）；办公楼类office包括私有数据成员offices（办公室数）和meetingrooms（会议室数）。住宅类house和办公楼类office都含有构造函数和print函数，以分别用于对数据成员的初始化和输出。在主函数中，实例化house类和office类对象并且将其数据输出。某校每位学生都要学习英语、语文、数学三门公共课程以及不同的专业课程。会计学专业要学习会计学和经济学两门课程，化学专业要学习有机化学和化学分析两门课程。编程序管理学生成绩

5、，计算公共课的总分和平均分，以及所有课程的总成绩。数据记录：1、#include#include using namespace std;class CDate public: int x,n,e; CDate(); CDate(int x,int n,int e):x(x),n(n),e(e);class CPerson public: string name,sex; int age; CPerson(); CPerson(string name,int age,string sex):name(name),age(age),sex(sex) void Print() coutname a

6、ge sexendl; ;class CStudent:virtual public CPersonpublic: string id; CDate school; int grade; CStudent(); CStudent(string name,int age,string sex,string id,CDate school,int grade): CPerson(name,age,sex),id(id),school(school),grade(grade) void Print() coutname age sex id school.x-school.n-school.e gr

7、adeendl; ;class CTeacher:virtual public CPerson public: string duty,depart; CDate work; CTeacher(); CTeacher(string name,int age,string sex,CDate work,string duty,string depart): CPerson(name,age,sex),duty(duty),depart(depart),work(work)void Print() coutname age sex duty depart work.x-work.n-work.ee

8、ndl; ;class CGraduate:public CStudent public: string study,tutor; CGraduate(); CGraduate(string name,int age,string sex,string id,CDate school,int grade,string study,string tutor):CStudent(name,age,sex,id,school,grade),CPerson(name,age,sex),study(study),tutor(tutor)void Print() coutname age sex id s

9、chool.x-school.n-school.e grade study tutorendl; ;class CGradOnWork:public CGraduate,public CTeacher public: string name,sex; int age; CGradOnWork(); CGradOnWork(string name,int age,string sex,string duty,string depart,CDate work,string id,CDate school,int grade,string study,string tutor): CTeacher(

10、name,age,sex,work,duty,depart),CGraduate(name,age,sex,id,school,grade,study,tutor),CPerson(name,age,sex),name(name),age(age),sex(sex)void Print() coutname age sex duty depart work.x-work.n-work.e id school.x-school.n-school.e grade study tutorendl; ;int main() CGradonWork gradonWork(tzcer,男,33,15,20

11、03,335,computer,tangmin,jsj,sxxy,2002-8); s1.Print(); s1.CTeacher:Print(); s1.CGraduate:Print(); s1.CStudent:Print(); s1.CPerson:Print();8、#include#includeusing namespace std;class Point protected:double x, y; public: Point()x = 0;y = 0;Point(double x0,double y0) x = x0; y = y0; double get_x()return

12、 x;double get_y()return y;friend ostream & operator (ostream &out,Point &d); ostream & operator(ostream &out,Point &d)return out Point:( d.x , d.y ) endl;class Circle : public Pointprotected:double r;public:Circle()r = 0;Circle (double r0):r(r0)void set_r(double r1)r = r1;double get_r()return r;doub

13、le area()return 3.14159 * r * r;friend ostream & operator (ostream &out, Circle &r);ostream & operator(ostream &out,Circle &r)return out r: r.get_r() endl area: r.area() endl;class Cylinder : public Circleprivate:double h;public:Cylinder ()h = 0;Cylinder (double r0, double h0):Circle(r0), h(h0)void

14、set_h(double h1)h = h1;double get_h()return h;double area()return 2 * 3.14159 * r * h + 2 * 3.14159 * r * r;double volume()return Circle:area() * h;friend ostream & operator (ostream &out, Cylinder &h);ostream & operator(ostream &out,Cylinder &h)return out h: h.get_h() endl area: h.area() endl volum

15、e: h.volume() endl;int main()Point ps(-2,5);cout ps; Circle o(2);cout o;Cylinder h(2,4);cout h;system(pause);return 0;运行的效果如下：9、#include#includeusing namespace std;class buildingprotected:string name;int floors;float areas;public:building(string,int,float);void print();building:building(string q,int

16、 m,float s)name=q;floors=m;areas=s;void building:print()coutname:namefloors:floorsarea:areasendl;class house:public buildingpublic:house(string q,int m,float s,int i,int j):building(q,m,s)rooms=i;balcony=j;void print();private:int rooms;int balcony;void house:print()coutname:namefloors:floorsareas:a

17、reasrooms:roomsbalcony:balconyendl;class office:public buildingpublic:office(string q,int m,float s,int a,int b):building(q,m,s)offices=a;meetingrooms=b;void print();private:int offices;int meetingrooms;void office:print()coutname:namefloors:floorsareas:areasoffices:officesmeetingrooms:meetingroomse

18、ndl;int main()house q1(住宅,8,520,20,17);office q2(办公室,26,530,5,6);q1.print();q2.print();return 0;运行的效果如下：10、#include#includeusing namespace std;class comFinalprotected:char name20;int English,Chinese,Math,Total;float average;public:comFinal(char *n,int Eng,int Chi,int Mat);comFinal();comFinal();char

19、*getName()return name;int getEng()return English;int getChi()return Chinese;int getMat()return Math;void setEng(int x)English=x;void setChi(int x)Chinese=x;void setMat(int x)Math=x;int getTotal()return English+Chinese+Math;float getAverage()return (float)(English+Chinese+Math)/3);void show();comFina

20、l:comFinal(char *n,int Eng,int Chi,int Mat)English=Eng;Chinese=Chi;Math=Mat;strcpy(name,n);void comFinal:show()cout学生姓名：getName()endl;cout英语成绩：getEng()endl;cout语文成绩：getChi()endl;cout数学成绩：getMat()endl;cout基础分总评：getTotal()endl;cout基础课平均成绩：getAverage()endl;class account:public comFinalprotected:int acc

21、oun;int econ;int majtotal;float majave;public:account(char *n,int Eng,int Chi,int Mat,int acc,int eco);account();int getmajtotal()return econ+accoun;float getmajave()return float(accoun+econ)/2);int getaccount()return accoun;int getecon()return accoun;void setaccount(int x)accoun=x;void setecon(int

22、x)econ=x;void show();account:account(char *n,int Eng,int Chi,int Mat,int acc,int eco):comFinal(n,Eng,Chi,Mat)econ=eco;accoun=acc;void account:show()comFinal:show();cout会计学成绩：accounendl;cout经济学成绩：econendl;cout总分：getTotal()+accoun+econendl; class chemistry:public comFinalprotected:int chemistr;int analy;int majtatal;float majave;public:chemistry(ch