程序代码：

#include<iostream>
#include<ctime>
using std::cout;
using std::endl;
using std::ostream;



//模拟发牌
class Card
{
public:
    Card(int n);
    //发牌
    void draw_card();

private:
    //已发的牌数
    int drawn_num;
    //要发的牌数
    int card_num;
    //手中剩余的牌
    int card_left;
    //工具数组
     int array[4][13];
     //工具函数
     void card_rand();
    //花色
    static char* suit[4];
    //面值
    static char* face[13];
    //重新洗牌
    void draw_card_again();
};

char* Card::suit[4]={"Hearts","Diamonds","Clubs","Spades"};
char* Card::face[13]={"Ace","Deuce","Three","Four","Five","Six","Seven","Eight","Nine","Ten","Jack","Queen","King"};



Card::Card(int n):card_num(n),card_left(52),drawn_num(0)
{
    for(int i=0;i<4;i++)
        for(int j=0;j<13;j++)
            array[i][j]=0;
}

void Card::card_rand()
{
      int row=rand()%4;
      int col=rand()%13;

        //如果已经发出去了
       while(array[row][col])
       {
           row=rand()%4;
           col=rand()%13;
       }
        array[row][col]=1;
        cout<<face[col]<<" of "<<suit[row]<<endl;
}


void Card::draw_card()
{
    srand(time(NULL));

    int& i=drawn_num;
    for(;i<card_num;i++,--card_left)
    {
        if(!card_left)
        {
            //重新洗牌
            draw_card_again();
        }
        else
        { card_rand();}

    }
}

void Card::draw_card_again()
{
    cout<<"Reshuffling"<<endl;

    //全部清零
    card_left=52;
    for(int k=0;k<4;k++)
        for(int j=0;j<13;j++)
            array[k][j]=0;


    int& i=drawn_num;
    for(;i<card_num;i++,--card_left)
    {
        //发牌
        if(!card_left)
            draw_card_again();
        else
        {    card_rand();}
    }
}