马会飞

已知Horse类是Pegasus类的父类，根据以下主函数完善程序内容，以实现规定的输出。不允许改变主函数的内容。

int main()
{
	Horse *p1 = new Horse; //输出：Horse 申请了空间...
	Horse *p2 = new Pegasus; /*  输出两行：
	                             Horse 申请了空间...
	                             Pegasus 申请了空间...   
			         */	
	cout << endl; 
	
	p1->Fly(); //输出：Just a horse.
	p2->Fly(); //输出：I can fly!
	cout << endl; 
	
	delete p1; //输出：Horse 释放了空间...
	delete p2;  /* 输出两行：
	               Pegasus 释放了空间... 
	               Horse 释放了空间... 
		    */
	return 0;
}

#include<iostream>
using namespace std;

class Horse
{
public:
    Horse(){cout<<"Horse 申请了空间..."<<endl;}
    virtual void Fly(){cout<<"Just a horse."<<endl;}
    virtual ~Horse(){cout<<"Horse 释放了空间..."<<endl;}
};

class Pegasus:public Horse
{
public:
    Pegasus(){cout<<"Pegasus 申请了空间..."<<endl;}
    void Fly(){cout<<"I can fly!"<<endl;}
    ~Pegasus(){cout<<"Pegasus 释放了空间..."<<endl;}
};

int main()
{
    Horse *p1 = new Horse; //输出：Horse 申请了空间...
    Horse *p2 = new Pegasus; /*  输出两行：
                                 Horse 申请了空间...
                                 Pegasus 申请了空间...   
                     */    
    cout << endl; 
    
    p1->Fly(); //输出：Just a horse.
    p2->Fly(); //输出：I can fly!
    cout << endl; 
    
    delete p1; //输出：Horse 释放了空间...
    delete p2;  /* 输出两行：
                   Pegasus 释放了空间... 
                   Horse 释放了空间... 
            */
    return 0;
}