竞赛组织 编程刷题 交流问答 class motorcycle:▁▁▁,▁▁▁(2分) //摩托车类 { public: motorcycle (){} void Run() {cout<<"A motorcycle is running!"<<endl;} }; int main() { motorcycle a; a.Run(); return 0; }
时间: 2024-04-03 19:34:25 浏览: 13
在竞赛组织、编程刷题、交流问答中,出现了一个 C++ 代码片段,其中定义了一个名为 motorcycle 的类,该类中包含一个默认构造函数和一个名为 Run 的成员函数。在主函数中,创建了一个名为 a 的 motorcycle 对象,并调用了其 Run 函数输出了 "A motorcycle is running!"。
需要注意的是,代码片段中的类定义部分并没有完全展示出来,其中有两个位置被用 "▁"(下划线)代替了,因此无法确定这两个位置上的代码应该是什么。
相关问题
#include <iostream> using namespace std; class vehicle //车辆类 { private: int MaxSpeed; //最大车速 int Weight; //车重 public: vehicle(){MaxSpeed=0; Weight=0;} virtual void Run() {cout<<"A vehicle is running!"<<endl;} }; class bicycle :▁▁▁(2分) //自行车类 { private: int Height; //车高 public: bicycle(){} void Run() {cout<<"A bicycle is running!"<<endl;} }; class motorcar :▁▁▁(2分) //机动车类 { private: int SeatNum; //乘人数 public: motorcar(){} void Run() {cout << "A motorcar is running!" << endl; } }; class motorcycle:▁▁▁,▁▁▁(2分) //摩托车类 { public: motorcycle (){} void Run() {cout<<"A motorcycle is running!"<<endl;} }; int main() { motorcycle a; a.Run(); return 0; }
在 `bicycle` 类的定义中应该使用 `public` 关键字继承自 `vehicle` 类,即:
```cpp
class bicycle : public vehicle //自行车类
{
private:
int Height; //车高
public:
bicycle(){}
void Run() {cout<<"A bicycle is running!"<<endl;}
};
```
在 `motorcar` 类的定义中应该使用 `public` 关键字继承自 `vehicle` 类,即:
```cpp
class motorcar : public vehicle //机动车类
{
private:
int SeatNum; //乘人数
public:
motorcar(){}
void Run() {cout << "A motorcar is running!" << endl; }
};
```
在 `motorcycle` 类的定义中应该使用 `public` 关键字继承自 `bicycle` 类和 `motorcar` 类,即:
```cpp
class motorcycle : public bicycle, public motorcar //摩托车类
{
public:
motorcycle(){}
void Run() {cout<<"A motorcycle is running!"<<endl;}
};
```
声明一个车基类,有run stop等成员函数,由此派生bicycle类,motorcar类,bicycle和motorcar派生出摩托车motorcycle类,它们都有run,stop等成员函数
以下是一个基于C++的实现:
```cpp
class Car {
public:
virtual void run() {
cout << "Car is running." << endl;
}
virtual void stop() {
cout << "Car is stopping." << endl;
}
};
class Bicycle : public Car {
public:
void run() {
cout << "Bicycle is running." << endl;
}
void stop() {
cout << "Bicycle is stopping." << endl;
}
};
class Motorcar : public Car {
public:
void run() {
cout << "Motorcar is running." << endl;
}
void stop() {
cout << "Motorcar is stopping." << endl;
}
};
class Motorcycle : public Bicycle, public Motorcar {
public:
void run() {
cout << "Motorcycle is running." << endl;
}
void stop() {
cout << "Motorcycle is stopping." << endl;
}
};
```
在这个实现中,Car是车的基类,拥有run和stop成员函数,Bicycle和Motorcar都是Car的派生类,它们分别实现了run和stop函数。Motorcycle则同时继承了Bicycle和Motorcar,因此它们的成员函数都会被继承下来,在需要时可以重载这些函数以实现特定的行为。