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多繼承(研究生類) -電腦資料

電腦資料 時間:2019-01-01 我要投稿
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#include<iostream>using namespace std;#include<string>;class People{public:    People(const string& name,const string& sex, int age)        :_name(name)        , _sex(sex)        , _age(age)    {     }    virtual void Display()    {        cout << "name: " << _name << endl;        cout << "sex: " << _sex << endl;        cout << "age: " << _age << endl;    }protected:    string _name;    string _sex;    int _age;};class Student:virtual public People{public:    Student(const string& name, const string& sex, int age, int num)        :People(name,sex,age)        , _num(num)    {     }    virtual void Display()    {        cout << "Student" << endl;    }protected:    int _num;};class Teacher:virtual public People{public:    Teacher(const string& name, const string& sex, int age, int employeeNumber)        :People(name, sex, age)        , _employeeNumber(employeeNumber)    {     }    virtual void Display()    {        cout << "Teacher" << endl;    }protected:    int _employeeNumber;};class Graduate:public Teacher,public Student{public:    Graduate(const string& name, const string& sex, int age, int employeeNumber, int num,const string& learnClass)        :People(name, sex, age)        , Teacher(name, sex, age,employeeNumber)        , Student(name,sex,age,num)    {        _learnClass = learnClass;    }    virtual void Display()    {        cout << "Graduate" << endl;    }protected:    string _learnClass;//研究科目};void Test1(){    People p("lxj", "女", 18);    People* p1 = &p;    p.Display();    p1->Display();     Student s("lt", "女", 21, 413);    p1 = &s;//p1=(People*)&s;    p1->Display();}void Test2(){    People p("lxj", "女", 18);    People& p1 = p;    p.Display();    p1.Display();     Student s("lt", "女", 21, 413);    People& p2 =(People&) s;     s.Display();    p2.Display();}void Test3(){    Graduate  g("lxj", "女", 11, 22, 11, "software");    g.Display();}int main(){    Test3();    system("pause");    return 0;}

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