设计一个抽象类Vehicle

Question

】设计一个抽象类Vehicle，其中包含2个纯虚函数setdata()和show()；由它派生出类Car和类Truck，类Car包含名称、颜色、载客数3个数据成员，类Truck包含名称、颜色、载重量3个数据成员

Answer 1

#include <iostream>
#include <string>
using namespace std;

// 抽象类 Vehicle
class Vehicle {
public:
    virtual void setdata() = 0;
    virtual void show() = 0;
};

// 派生类 Car
class Car : public Vehicle {
private:
    string name;
    string color;
    int passenger_num; 
public:
    void setdata() {
        cout << "请输入汽车的名称：";
        cin >> name;
        cout << "请输入汽车的颜色：";
        cin >> color;
        cout << "请输入汽车的载客数：";
        cin >> passenger_num;
    }
    void show() {
        cout << "汽车的名称为：" << name << endl;
        cout << "汽车的颜色为：" << color << endl;
        cout << "汽车的载客数为：" << passenger_num << endl;
    }
};

// 派生类 Truck
class Truck : public Vehicle {
private:
    string name;
    string color;
    int load_weight;
public:
    void setdata() {
        cout << "请输入卡车的名称：";
        cin >> name;
        cout << "请输入卡车的颜色：";
        cin >> color;
        cout << "请输入卡车的载重量：";
        cin >> load_weight;
    }
    void show() {
        cout << "卡车的名称为：" << name << endl;
        cout << "卡车的颜色为：" << color << endl;
        cout << "卡车的载重量为：" << load_weight << endl;
    }
};

int main() {
    Vehicle* pVehicle;
    Car car;
    Truck truck;
    pVehicle = &car;
    pVehicle->setdata();
    pVehicle->show();
    pVehicle = &truck;
    pVehicle->setdata();
    pVehicle->show();
    return 0;
}