[C++] Poker with OOP

Introduction
I found a OOP question from CSND.
That is how to design a OO with Poker.

Source Code

#include <iostream>
#include <vector>
using namespace std;

enum Suit
{
    Spade = 0,
    Heart,
    Diamond,
    Club
};

class Poker
{
private:
    Suit m_suit;
    int m_number;
public:
    Poker(Suit suit,int number)
    {
        m_suit = suit;
        m_number = number;
    }

    string GetSuit()
    {
        string suit = "Spade";
        if(m_suit == Heart)
            suit = "Heart";
        if(m_suit == Diamond)
            suit = "Diamond";
        if(m_suit == Club)
            suit = "Club";
        return suit;
    }
   
    friend ostream& operator <<(ostream& os, Poker* pk)
    {
        string suit = pk->GetSuit();
        os << "[" << suit.c_str() << ":" << pk->m_number << "]";
        return os;
    }
};

class Cards
{
private:
    vector<Poker*> m_cards;
public:
    Cards()
    {
        for(int i = 0 ; i < 52 ; i++)
        {
            m_cards.push_back(new Poker((Suit)(i / 13), (i % 13)+1));
        }
    }
    void Output()
    {
        vector<Poker*>::iterator iter = m_cards.begin();
        for(; iter != m_cards.end() ; iter++)
        {
            cout<<(Poker*)(*iter)<<endl;
        }
    }
};

int _tmain(int argc, _TCHAR* argv[])
{
    Cards *cards  = new Cards();
    cards->Output();
    int a = 0;
    a = cin.get();
    return 0;
}