數(shù)據(jù)的共享和保護以及多態(tài)性課案

1、實驗四 數(shù)據(jù)的共享和保護以及多態(tài)性實驗?zāi)康? 學習數(shù)據(jù)的共享和保護。2 學習使用虛函數(shù)實現(xiàn)動態(tài)多態(tài)性。實驗內(nèi)容1 聲明一個 Dog 類，自行分析設(shè)計出其可以擁有的靜態(tài)數(shù)據(jù)成員和靜態(tài)成員函數(shù)， 設(shè) 計完整程序并測試這個類， 請分析寫出靜態(tài)數(shù)據(jù)成員和靜態(tài)成員函數(shù)的功能和用 法。2. 聲明類X、Y、Z。實現(xiàn)：Y的成員函數(shù)可以訪問 X的私有數(shù)據(jù)成員，Z的成員函 數(shù)可以訪問 X 的數(shù)據(jù)成員。用多文件結(jié)構(gòu)實現(xiàn)以上功能。 （各類中的數(shù)據(jù)成員和函 數(shù)成員 請自行思考設(shè)計 ）3. 聲明一個 Vehicle （車）基類，有 Run、Stop等成員函數(shù)，由此派生出bicycle （自 行車）類和 motorcar

2、（汽車）類，從 bicycle類和 motorcar類派生出 motorcycle （摩 托車）類，它們都有 Run、Stop等成員函數(shù)。實現(xiàn)并測試這些類，注意虛基類和虛 函數(shù)的使用。4. 對people類重載"=”運算符和"=”運算符，"=”運算符判斷兩個people類對象的id屬性的大?。?quot;=”運算符實現(xiàn) people類對象的賦值操作。附：people類的屬性：number （編號）、sex （性別）、birthday （出生日期）、id （身份證號）等 等。其中“出生日期”聲明為一個“日期”類內(nèi)嵌子對象。三、實驗注意事項程序中，需要編寫一個可執(zhí)行函

3、數(shù)與 main 主調(diào)函數(shù)，自主設(shè)計輸入、輸出值，使得結(jié) 果可以由控制臺顯示輸出。四、實驗程序代碼程序 1#include <iostream>#include <string>using namespace std;class Dogpublic:Dog() age = 1; sex = "male" weight = 1.0;Dog(int _age, string _sex, double _weight):age(_age), sex(_sex), weight(_weight) Dog()void setDog(int _age, strin

4、g _sex, double _weight)age = _age;sex = _sex;weight = _weight;void showDog()cout<<"age = "<<age<<", sex = "<<sex.c_str()<<", weight = "<<weight<<endl;private:int age; string sex;double weight;int main()Dog d1, d2(10, "femal

5、e", 20.0);d1.showDog();d2.showDog();d1.setDog(8, "female", 50);d1.showDog();cin.get();return 0;程序 2#include<iostream>using namespace std;class X;class Z;class Ypublic:void g(X* pa);class Xint i;public:X() i=0; void disp() cout <<"i=" <<i <<endl; frien

6、d void Y:g(X* pa);friend class Z;friend void h(X* pa);class Zpublic:void f(X* pa) pa->i += 5; ;void Y:g(X* pa) pa->i+; void h(X* pa) pa->i += 8; int main()X x;Y y;Z z;y.g(&x);x.disp();z.f(&x);x.disp();h(&x); x.disp();return 0;程序 3#include<iostream>using namespace std;class

7、 Vehiclepublic:virtual void Run()cout<<"V ehicle:Run calledn"virtual void Stop()cout<<"Vehicle:Stop calledn"class motorcar:public Vehiclepublic:void Run()cout<<"motorcar:Run calledn"virtual void Stop()cout<<"motorcar:Stop calledn" ;clas

8、s bicycle :public Vehiclepublic:virtual void Run()cout<<"bicycle:Run calledn"void Stop()cout<<"bicycle:Stop calledn"class motorcycle:public bicycle,public motorcarpublic:void Run()cout<<"motorcycle:Run calledn"void Stop()cout<<"mototrcycle:S

9、top calledn"int main()Vehicle ve; bicycle bi; motorcar mo; motorcycle mocy; Vehicle *pclass=&ve; pclass->Run(); pclass->Stop(); pclass=&bi; pclass->Run(); pclass->Stop(); pclass=&mo; pclass->Run(); pclass->Stop();程序 4 #include<iostream> #include<string>

10、 using namespace std; class date /日期類private:int year,month,day;public:void setdate(int y=0,int m=0,int d=0);/帶默認形參值的成員函數(shù)void showdate();void date:setdate(int y,int m,int d)/內(nèi)聯(lián)成員函數(shù)cin>>y>>m>>d;year=y;month=m;day=d;void date:showdate() cout<<year<<"-"<<mo

11、nth<<"-"<<day<<endl;class people private:int num;char sex;date birth;/"日期類內(nèi)嵌子對象string id;public:people()/構(gòu)造函數(shù)people(int n,char s,date b,string i) num=n;sex=s;birth=b;id=i;people operator =(const people &p);/ 符號重載函數(shù)實現(xiàn)people operator =( const people &p);people(

12、people &p); / 拷貝構(gòu)造函數(shù)void setpeople(); / 屬性值錄入void showpeople(); / 屬性值顯示;people:people(people &p) / 定義拷貝構(gòu)造函數(shù)num=p.num;sex=p.sex;birth=p.birth;id=p.id;void people:setpeople()cout<<" 錄入人員信息 "<<endl;cout<<"請輸入編號："；cin>>num;cout<<" 請輸入性別 (m/f

13、): "cin>>sex;cout<<"請輸入出生日期："；birth.setdate();cout<<" 請輸入身份證號 ： "；cin>>id；void people：showpeople() / 對象函數(shù)實現(xiàn)cout<<""<<num<<" 號人員信息 "<<endl；cout<<" 人員編號 ： "<<num<<endl；cout<<&

14、quot; 人員性別 ： "<<sex<<endl；cout<<" 出生日期 ： "；birth.showdate()；cout<<" 身份證號 ： "<<id<<endl；people people：operator =(const people &p)if(p.id=id) cout<<"id 相等！ "<<endl；else cout<<"id 不相等！ "<<endl；

15、return *this；people people:operator =(const people &p) id=p.id;num=p.num;sex=p.sex;birth=p.birth; return *this;int main()people p1,p2;p1.setpeople();p1.showpeople();p2.setpeople();p2.showpeople(); cout<<""<<endl; cout<<"p1=p2:"<<endl;p1=p2; cout<<

16、;""<<endl; cout<<"p1=p2:"<<endl;p1=p2;p1.showpeople();p2.showpeople();return 0;五、實驗運行結(jié)果程序1' CiU s er$fa nyjDo cu mentsC - F reeT e mage = 1, sex = male.,訓(xùn)eight = 1age - 10, sex - femalej weight - 20ae = 8, sex = female, weight = 50請按任意鍵繼續(xù) 程序2 "C:U5ersfanyjDocumentsC- Frei = li = 14請按任意鍵繼續(xù).程序3" C：U ersf a nyjDo cu m enehic1e:Run called Vehicle:Stop called >icycle:Run called )icycle;：Stop called notorcar:Run called notorcar:Stop called