Familiarize yourself with the BlackJack project:

• Copy the BlackJack program from the folder
  \\Phantom\cls_mcdowell\CS 420\blackjack\.
  The program is contained in the files:
  • Dealer.h and Dealer.cpp
  • Player.h and Player.cpp
  • Deck.h and Deck.cpp
  • Card.h and Card.cpp
  • BlackJack.cpp

• Compile and run the program several times.

• Declare and define a new public member function in class Deck called ShowDeck(). ShowDeck should use the Display function in the Card class to display each card in a deck.

  Modify the constructor for Dealer so that it calls the ShowDeck function before and after shuffling the deck to verify whether the Shuffle function is working. If you can't see all of your output, you might put a "pause" in the output by prompting the user to input a character at the bottom of the ShowDeck function. You could also display the deck in four columns; notice that the first row would contain cards 0, 13, 26, and 39, the second row contains cards 1, 14, 27, and 40, and row i contains cards ?, ?, ?, and ? (for you to calculate!). How many rows would you need in your display?

Improve the style of the BlackJack program:

• The implementation of the Deck class contains numerous occurrences of the number 52. Such use of "magic numbers" is bad programming style (Quality Tip 2.3 on p. 62). Get rid of the magic number 52 in the program by introducing a constant to stand for the number of cards in a standard deck. Use this constant in the Deck constructor, but in the other Deck member functions use the vector size function to determine the number of cards in the deck.

  Once we have rid ourselves of this magic number, it should be easier to make changes to the deck size. Add a parameter to the Deck constructor indicating how many standard decks to include in the new deck (1 means a single deck, 2 means a double deck with 104 cards, 3 a triple deck, etc.). Be sure to modify the code that constructs the deck as well. Modify the call to the Deck constructor so that a double deck is used in the BlackJack game.

Change the implementation of shuffling:

• There are many ways to shuffle a deck of cards. The riffle shuffle, for instance, divides the deck into two piles and then recombines the deck by alternately inserting the top card of each pile. As a simple example, if the deck originally contained the "cards" 1, 2, 3, 4, 5, 6, 7, 8, we would cut the deck into the piles 1, 2, 3, 4 and 5, 6, 7, 8, and combine the cards alternately. If we start with the first pile, this yields 1, 5, 2, 6, 3, 7, 4, 8. Notice that the first and last cards are still in the same position. Instead we should start with the second pile, yielding 5, 1, 6, 2, 7, 3, 8, 4. Rewrite Shuffle to perform a riffle shuffle.

  With lots of practice, one can learn to perform a perfect riffle shuffle. If we start with a fresh deck and perform a perfect riffle shuffle, we can then predict exactly the arrangement of the deck. In our example with eight cards, what is the arrangement after three riffle shuffles? After six? Modify Shuffle so that it performs the riffle shuffle a random number of times between 3 and 10.

Print and turn in the header and implementation files for the Deck and Dealer classes. Also send e-mail to your lab TA and include these files as an attachment.

If you have extra time, you can start work on the programming project (due next week at the beginning of lab).

^*This lab is based on the lab from Chapter 5 of The Object Concept by Rick Decker and Stuart Hirshfield, International Thomson Publishing Company, 1995.