2．定义一个车（Vehicle）类，有run，stop等成员函数， 由此派生出自行车（bicycle）类、汽车（motocar）类，由bicycle类和motocar类派生出摩托车类（motocycl

#include
using namespace std;

/*
2．定义一个车（Vehicle）类，有run，stop等成员函数，
由此派生出自行车（bicycle）类、汽车（motocar）类，由bicycle类和motocar类派生出摩托车类（motocycle），
它们都run, stop等成员函数，编写相应的虚函数并测试。
*/

class Vehicle {
public:
	virtual void run() { cout << "run  in vehicle" << endl; }
	virtual void stop() { cout << "stop in vehicle" << endl; }
};

class Bicycle : virtual public Vehicle {
public:
	void run() { cout << "run  in Bicycle" << endl; }
	void stop() { cout << "stop in Bicycle" << endl; }
};

class motocar : virtual public Vehicle {
public:
	void run() { cout << "run  in motocar" << endl; }
	void stop() { cout << "stop in motocar" << endl; }
};

class Motocycle : public Bicycle, public motocar {
public:
	void run() { cout << "run  in motocycle" << endl; }
	void stop() { cout << "stop in motocycle" << endl; }
};

void fun(Vehicle *p) {
	p->run();
	p->stop();
}

int main() {
	Vehicle m1;
	Bicycle m2;
	motocar m3;
	Motocycle m4;
	
	fun(&m1);
	fun(&m2); 
	fun(&m3); 
	fun(&m4);
	getchar();
	return 0;
}