實(shí)驗(yàn)五派生類和繼承二

1、福建農(nóng)林大學(xué)實(shí)驗(yàn)報(bào)告實(shí)驗(yàn)5 派生類和繼承（二）一、實(shí)驗(yàn)?zāi)康暮鸵螅?）掌握派生類的聲明與定義方法，進(jìn)一步理解類的繼承的概念，能夠定義和使用類的繼承關(guān)系。（2）熟悉公有派生和私有派生的訪問特性。（3）了解虛基類在解決二義性問題中的作用。二、實(shí)驗(yàn)內(nèi)容和原理1、試寫出所能想到的所有形狀（包括二維的和三維的），生成一個(gè)形狀層次類結(jié)構(gòu)。生成的層次結(jié)構(gòu)以Shape作為基類，并由此派生出TwoDimShape類和ThreeDimShape類。它們的派生類是不同形狀類，定義層次結(jié)構(gòu)中的每一個(gè)類，并用函數(shù)main（）進(jìn)行測試。2、設(shè)計(jì)一個(gè)學(xué)生類CStudent。數(shù)據(jù)成員包括學(xué)生姓名，性別，年齡，學(xué)號(hào)，已修學(xué)分。

2、成員函數(shù)包括輸入輸出或修改學(xué)生姓名、學(xué)號(hào)，增加已修學(xué)分。設(shè)計(jì)一個(gè)教師類CTeacher。數(shù)據(jù)成員包括教師姓名，性別，年齡，職稱，擔(dān)任課程。成員函數(shù)包括輸入輸出或修改教師姓名、年齡，更改職稱等。以CStudent為基類派生子類CGraduateStudent。增加數(shù)據(jù)成員導(dǎo)師姓名、研究生已發(fā)表論文的數(shù)目；成員函數(shù)為增加已發(fā)表論文數(shù)目。最后，用函數(shù)main（）函數(shù)進(jìn)行測試。（提示：可為CStudent類和CTeacher類創(chuàng)建一個(gè)公共基類）三、實(shí)驗(yàn)環(huán)境1. 硬件：PC機(jī)；2. 軟件：Windows操作系統(tǒng)、Visual C+ 6.0四、算法描述及實(shí)驗(yàn)步驟#include<iostream.h

3、>const double PI=3.14;class shape public:shape(); double area()constreturn 0.0; double bulk()constreturn 0.0;class TwoDimShape:public shape;class Circle:public TwoDimShapepublic:Circle(double myr)R=myr;double area()constreturn PI*R*R; protected: double R;class ThreeDimShape:public shape;class sph

4、ere:public ThreeDimShapepublic:sphere(double myw)R=myw;double bulk()constreturn 4/3*PI*R*R*R; protected: double R;int main()shape sha;double area;double bulk;Circle c(3.0);area=c.area();cout<<"Area of circle is"<<area<<endl; sphere sph(4.0);bulk=sph.bulk();cout<<&qu

5、ot;Bulk of sphere is"<<bulk<<endl;return 0;2.#include<iostream>#include<string>using namespace std;class Person public: Person(string n,string s,int a) name=n;sex=s;age=a; void input() cin>>"姓名:">>name;cin>>"性別:">>sex;cin>&g

6、t;"年齡:">>age;void display() cout<<"姓名:"<<name<<endl; cout<<"性別:"<<sex<<endl; cout<<"年齡:"<<age<<endl;protected:string name; string sex; int age; ; class Teacher:virtual public Person public:Teacher(str

7、ing n,string s,int a,string t,string l):Person(n,s,a) title=t;lesson=l; void input() Person:input();cin>>"職稱:">>title;cin>>"擔(dān)任課程:">>lesson;void display() Person:display();cout<<"職稱:"<<title<<endl;cout<<"擔(dān)任課程:"<

8、;<lesson<<endl;protected:string title; string lesson; ;class Student:virtual public Person public:Student(string n,string s,int a, string no,string c):Person(n,s,a) num=no; credit=c; void input() Person:input();cin>>"學(xué)號(hào):">>num;cin>>"已修學(xué)分:">>credit

9、;void display() Person:display();cout<<"學(xué)號(hào):"<<num<<endl;cout<<"已修學(xué)分:"<<credit<<endl;protected:string num; string credit; ;class Graduate:public Student public:Graduate(string n,string s,int a,string no,string c,string tn,string th):Person(n,s,a

10、),Student(n,s,a,no,c)tname=tn; thesis=th;void input() Person:input();cin>>"導(dǎo)師姓名:">>tname;cin>>"發(fā)表論文數(shù)目:">>thesis;void display() Student:display();cout<<"導(dǎo)師姓名:"<<tname<<endl;cout<<"發(fā)表論文數(shù)目:"<<thesis<<end

11、l;private:string tname;string thesis;int main() Teacher teac("鎮(zhèn)鎮(zhèn)","男",30,"博士","面向?qū)ο蟪绦蛟O(shè)計(jì)");Student stud("星星","女",19,"100202019","6");Graduate grad("杰杰","男",25,"100202021","18","源源","20");cout<<"教師有關(guān)數(shù)據(jù):"<<endl;teac.display();cout<<"n學(xué)生數(shù)據(jù):"<<endl; stud.display();cout<<"n研究生數(shù)據(jù):"<&