#include 
     
      #include 
      
       using namespace std;class relatives{public:    relatives(){}    virtual ~relatives(){}    virtual bool request(int)=0;};class brother : public relatives{public:    brother(){}    virtual ~brother(){}    bool request(int num)    {        if (num<100)        {            cout<<"哥哥给你买"<
       
         p_vbuy;public:    buysomething()    {        p_vbuy.push_back(new brother);        p_vbuy.push_back(new mother);        p_vbuy.push_back(new father);    }    virtual ~buysomething()    {        p_vbuy.clear();    }    void request(int num)    {        bool flag=false;        for (vector
        
         ::iterator it=p_vbuy.begin();it!=p_vbuy.end();it++)        {            flag=(*it)->request(num);            if (flag==true)                break;        }    }};int main(){    buysomething *buy=new buysomething;    buy->request(6000);    delete buy;    system("pause");    return 0;}