實驗4繼承與派生

1、實驗4 繼承與派生班級 網(wǎng)絡1311 學號 39 姓名 付豪 成績 一、實驗目的1. 熟練掌握類的繼承,能夠定義和使用類的繼承關系2. 掌握派生類的聲明與實現(xiàn)方法3. 掌握類構造函數(shù)的初始化列表與作用域分辨率的使用方法4. 理解虛基類在解決二義性問題中的作用.二、實驗內(nèi)容1定義一個基類有姓名、性別、年齡，再由基類派生出教師類和學生類，教師類增加工號、職稱和工資，學生類增加學號、班級、專業(yè)和入學成績，在main()函數(shù)中定義基類和派生類對象，對類進行測試。2聲明一個哺乳動物Mammal類，再由此派生出狗Dog類，聲明一個Dog類的對象，觀察基類與派生類的構造函數(shù)與析構函數(shù)的調(diào)用順序。3定義一個P

2、oint類，派生出矩形類Rectangle和圓類Circle，計算各派生類對象的面積Area()。4設計一個圓類circle和一個桌子類table，另設計一個圓桌類roundtable，它是從前兩個類派生的，要求輸出一個圓桌的高度、面積和顏色等數(shù)據(jù)。 5定義一個大學生類student，函數(shù)私有數(shù)據(jù)成員：姓名、學號、校名，并為它定義帶參數(shù)的構造函數(shù)，參數(shù)帶缺省值的構造函數(shù)和輸出數(shù)據(jù)成員值的print()公有成員函數(shù)，另定義研究生類，它以公有繼承方式派生于類student，新增加“研究方向、導師名”兩個私有數(shù)據(jù)成員，并定義帶參數(shù)的構造函數(shù)和輸出研究生數(shù)據(jù)的print()公有成員函數(shù)。在main()

3、函數(shù)中定義基類和派生類對象，對類進行測試。三、實驗源程序、測試與結論1#include<iostream>#include<string>using namespace std;class personstring name; char sex;int age;public:person(string n,char s,int a):name(n),sex(s),age(a) void show()cout<<name<<endl; cout<<sex<<endl;cout<<age<<endl;c

4、lass teacher:public personint num; string job; int money;public:teacher(string n,char s,int a,int nu,string j,int m):person(n,s,a),num(nu),job(j),money(m) void show()person:show();cout<<num<<endl;cout<<job<<endl;cout<<money<<endl;class student:public personint num

5、; string Class; string zhuanye; float sorce;public:student(string n,char s,int a,int nu,string C,string z,float ss):person(n,s,a),num(nu),Class(C),zhuanye(z),sorce(ss) void show()person:show(); cout<<num<<endl;cout<<Class<<endl;cout<<zhuanye<<endl;cout<<sorc

6、e<<endl;void main() teacher t1("Fsda",'M',1234,74,"jiaoshi",8000); student s1("Hfgh",'F',1145,1001,"BX1311","wangluo",511); t1.show();cout<<endl<<endl;s1.show();2#include<iostream>using namespace std;class Mamm

7、alpublic:Mammal()cout<<"Mammal構造"<<endl;Mammal()cout<<"Mammal析構"<<endl;class Dog:public Mammalpublic:Dog()cout<<"Dog構造"<<endl;Dog()cout<<"Dog析構"<<endl;void main() Dog a;3.#include<iostream>using namespace s

8、td;class Pointdouble x;double y;public:Point(double x,double y):x(x),y(y)void show()cout<<"("<<x<<","<<y<<")"<<endl;class Rectangle:public Point double x, y;public:Rectangle(double x,double y,double x1,double y1):Point(x,y),x(x1),y(y1

9、)void Area()Point:show();cout<<"Ãæ»ý:"<<x*y<<endl;class Circle:public Pointdouble r;public:Circle(double x,double y,double c):Point(x,y),r(c)void Area()Point:show();cout<<"Ãæ»ý:"<<r*r*3.14<<endl;void main

10、() Rectangle f2(5,6,7,8); Circle f3(1,2,3);f2.Area();f3.Area();4.#include<iostream>#include<string>using namespace std;class Circleint r;public:Circle(int r1)r=r1;class Tableint h;string color;public:Table(int h1,string c1)h=h1;color=c1;class Roundtable:public Circle,public Tablepublic:R

11、oundtable(int x,int y,string z):Circle(x),Table(y,z) cout<<"高度："<<x<<"面積："<<y<<"顏色："<<z<<endl;void main() string c; cout<<"請輸入顏色："<<endl;cin>>c;Roundtable a(7,11,c);5.#include<iostream>#include&

12、lt;string>using namespace std;class student protected: string name; int num; string school;public:student(string n="hi",int a=0,string b="bey"):name(n),num(a),school(b)void print() cout<<"name:"<<name<<endl; cout<<"num:"<< num&

13、lt;<endl; cout<<"school:"<<school<<endl;class graduate:public student string research_area;string tutor_name;public:graduate(string a,int b,string c,string d,string e): student(a,b,c),research_area(d),tutor_name(e)void print() cout<<"name:"<<name&

14、lt;<endl; cout<<"num:"<< num<<endl; cout<<"school:"<<school<<endl;/*/student:print();cout<<"research_area:"<<research_area<<endl;cout<<"tutor_name:"<<tutor_name<<endl;void main() graduate g("Fsda",17,"DJ","wangluo","Tao"); cout<<"graduate:"<<endl