面向对象程序设计-实验九

6-1 车的继承

代码清单：

#include<iostream>

#include<string>

using namespace std;

class vehicle

{

public:

    int speed;

    int weight;

    void Run()

    {

    }

    void Stop()

    {

    }

};

class bicycle :virtual public vehicle

{

public:

    int height;

};

class motorcycle :virtual public vehicle

{

public:

    int seatNum;

};

class Motorcar :public bicycle, public motorcycle

{

public:

    Motorcar(int s, int w, int h, int s1)

    {

        speed = s;

        weight = w;

        height = h;

        seatNum = s1;

    }

};

/* 请在这里填写答案 */

int main() {

    Motorcar  moto(30, 50, 120, 5);

    cout << "speed " << moto.speed << endl;

    cout << "weight " << moto.weight << endl;

    cout << "height " << moto.height << endl;

    cout << "seatNum " << moto.seatNum << endl;

}

运行结果截图

题目2

6-2 多重继承派生类构造函数

代码清单：

#include <iostream>

#include <string>

using namespace std;

class Teacher

{

public:

    Teacher(string nam, int a, string t)

    {

        name = nam;

        age = a;

        title = t;

    }

    void display()

    {

        cout << "name:" << name << endl;

        cout << "age" << age << endl;

        cout << "title:" << title << endl;

    }

protected:

    string name;

    int age;

    string title;

};

class Student

{

public:

    Student(string nam, char s, float sco)

    {

        name1 = nam;

        sex = s;

        score = sco;

    }

    void display1()

    {

        cout << "name:" << name1 << endl;

        cout << "sex:" << sex << endl;

        cout << "score:" << score << endl;

    }

protected:

    string name1;

    char sex;

    float score;

};

/* 请在这里填写答案 */

class Graduate :public Teacher, public Student

{

public:

    float wages;

    Graduate(string nam, int a, char s, string t, float s1, float w) :Teacher(nam, a, t), Student(nam, s, s1)

    {

        wages = w;

    }

    void show()

    {

        cout << "name:" << name << endl;

        cout << "age:" << age << endl;

        cout << "sex:" << sex << endl;

        cout << "score:" << score << endl;

        cout << "title:" << title << endl;

        cout << "wages:" << wages << endl;

    }

};

int main()

{

    Graduate grad1("Wang-li", 24, 'f', "assistant", 89.5, 1234.5);

    grad1.show();

    return 0;

}

运行结果截图

题目3

运行结果截图7-1 A是A1的虚基类

代码清单：

#include<iostream>

using namespace std;

class A

{

protected:

    int i;

public:

    A(int a)

    {

        this->i = a;

        cout << "Call A:i=" << i << endl;

    }

    void display()

    {

        cout << "i=" << i << endl;

    }

};

class A1 :virtual public A

{

protected:

    int j;

public:

    A1(int b):A(b)

    {

        j = b;

        cout << "Call A1:i=" << i<<endl;

    }

    void disploy1()

    {

        cout << "j=" << j << endl;

    }

};

class A2 :virtual public A

{

protected:

    int k;

public:

    A2(int c) :A(c)

    {

        this->k = c;

        cout << "Call A2:i=" << i << endl;

    }

    void disploy2()

    {

        cout << "k=" << k << endl;

    }

};

class A3 :public A1, public A2

{

public:

    A3(int i, int j, int k) :A(i),A1(j),A2(k)

    {

        cout << "Call A3:i=" << i << endl;

    }

    void disp()

    {

        cout << "i=" << i << endl << "j=" << j << endl << "k=" << k << endl;

    }

};

int main()

{

    int A; int B; int C;

    cin >> A >> B >> C;

    A3 aaa(A, B, C);

    aaa.disp();

    return 0;

}

实验心得和体会：