设计一个不同的交通工具类族

Question

一个汽车类vehicle，包含保护类型数据成员重量weight和车轮数量wheel，包含公有成员函数void set(int we,int wh)分别设置重量和车轮数量，公有成员函数void display()输出汽车的重量和车轮数量。
由类vehicle派生出类car和类truck，类Car增加保护类型数据成员载客数量busload，增加公有成员函数void set1(int m)设置载客数量,重定义公有成员函数void display()显示轿车的重量、车轮数量和载客数量。
类truck增加保护类型数据成员载重量deadweight，增加公有成员函数void set2(int m)设置载重量，定义公有成员函数void display()显示卡车的重量、车轮数量和载重量。然后编写主程序测试这些类。以上所有数据均是整数。
输入输出样例：
Input the weight:2
Input the wheel:4
Input the the busload:40
Input the deadweight:10
The vehicle:
The weight is 2
The wheel is 4
The car:
The weight is 2
The wheel is 4
The busload is 40
The truck:
The weight is 2
The wheel is 4
The deadweight is 10

参考程序模板

#include <iostream>
using namespace std;

//补充代实现类vehicle  的定义

        cout << "The weight is " << weight << endl;
        cout << "The wheel is " << wheel << endl;

//补充代码实现类car 的定义
        cout << "The weight is " << weight << endl;
        cout << "The wheel is " << wheel << endl;
        cout << "The busload is " << busload << endl;

    //补充代码实现类truck 的定义

        cout << "The weight is " << weight << endl;
        cout << "The wheel is " << wheel << endl;
        cout << "The deadweight is " << deadweight << endl;

int main(){
    vehicle v1;
    car car1;
    truck truck1;
    int weight, wheel, busload, deadweight;
    cout << "Input the weight:" ;
    cin >> weight;
    cout << "Input the wheel:" ;
    cin >> wheel;
    cout << "Input the the busload:" ;
    cin >> busload;
    cout << "Input the deadweight:" ;
    cin >> deadweight;
    v1.set(weight, wheel);
    car1.set1(weight, wheel, busload);
    truck1.set2(weight, wheel, deadweight);
    cout<<"The vehicle:"<<endl;
    v1.display();
    cout<<"The car:"<<endl;
    car1.display();
    cout<<"The truck:"<<endl;
    truck1.display();
    return 0;
}

Answer 1

#include <iostream>
using namespace std;

class vehicle {
protected:
    int weight;
    int wheel;
public:
    void set(int we, int wh) {
        weight = we; wheel = wh;
    }
    virtual void display() {
        cout << "The weight is " << weight << endl;
        cout << "The wheel is " << wheel << endl;
    }
};

class car : public vehicle {
protected:
    int busload;
public:
    void set1(int we, int wh, int m) { busload = m; set(we, wh); }
    void display() {
        cout << "The weight is " << weight << endl;
        cout << "The wheel is " << wheel << endl;
        cout << "The busload is " << busload << endl;
    }
};

class truck : public vehicle {
protected:
    int deadweight;
public:
    void set2(int we, int wh, int m) { deadweight = m; set(we, wh); }
    void display() {
        cout << "The weight is " << weight << endl;
        cout << "The wheel is " << wheel << endl;
        cout << "The deadweight is " << deadweight << endl;
    }
};

int main() {
    vehicle v1;
    car car1;
    truck truck1;
    int weight, wheel, busload, deadweight;
    cout << "Input the weight:";
    cin >> weight;
    cout << "Input the wheel:";
    cin >> wheel;
    cout << "Input the the busload:";
    cin >> busload;
    cout << "Input the deadweight:";
    cin >> deadweight;
    v1.set(weight, wheel);
    car1.set1(weight, wheel, busload);
    truck1.set2(weight, wheel, deadweight);
    cout << "The vehicle:" << endl;
    v1.display();
    cout << "The car:" << endl;
    car1.display();
    cout << "The truck:" << endl;
    truck1.display();
    return 0;
}

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