cardaray.cpp

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// cardaray.cpp
// cards as objects
#include <iostream>
#include <cstdlib>          //for srand(), rand()
#include <ctime>            //for time for srand()
using namespace std;

enum Suit { clubs, diamonds, hearts, spades };
//from 2 to 10 are integers without names 
const int jack = 11;      
const int queen = 12;       
const int king = 13;
const int ace = 14;
////////////////////////////////////////////////////////////////
class card
   {
   private:
      int number;        //2 to 10, jack, queen, king, ace
      Suit suit;         //clubs, diamonds, hearts, spades
   public:
      card()                      //constructor
         { }
      void set(int n, Suit s)     //set card
         { suit = s; number = n; }
      void display();             //display card
   };
//--------------------------------------------------------------
void card::display()              //display the card
   {
   if( number >= 2 && number <= 10 )
      cout << number;
   else
      switch(number)
         {
         case jack:  cout << "J"; break;
         case queen: cout << "Q"; break;
         case king:  cout << "K"; break;
         case ace:   cout << "A"; break;
         }
   switch(suit)
      {
      case clubs:    cout << static_cast<char>(5); break;  
      case diamonds: cout << static_cast<char>(4); break;  
      case hearts:   cout << static_cast<char>(3); break;  
      case spades:   cout << static_cast<char>(6); break;  
      }
   }
////////////////////////////////////////////////////////////////
int main()
   {
   card deck[52];
   int j;

   cout << endl;
   for(j=0; j<52; j++)         //make an ordered deck
      {
      int num = (j % 13) + 2;  //cycles through 2 to 14, 4 times
      Suit su = Suit(j / 13);  //cycles through 0 to 3, 13 times
      deck[j].set(num, su);    //set card
      }
   cout << "\nOrdered deck:\n";
   for(j=0; j<52; j++)         //display ordered deck
      {
      deck[j].display();
      cout << "  ";
      if( !( (j+1) % 13) )     //newline every 13 cards
         cout << endl;
      }
   srand( time(NULL) );        //seed random numbers with time
   for(j=0; j<52; j++)         //for each card in the deck,
      {
      int k = rand() % 52;     //pick another card at random
      card temp = deck[j];     //and swap them
      deck[j] = deck[k];
      deck[k] = temp;
      }
   cout << "\nShuffled deck:\n";
   for(j=0; j<52; j++)         //display shuffled deck
      {
      deck[j].display();
      cout << ", ";
      if( !( (j+1) % 13) )     //newline every 13 cards
         cout << endl;
      }
   return 0;
   }  //end main