Assignment 2: Exploring Classes.


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COMP 322

Before you start:
● Collaboration and research for similar problems on the internet are recommended.
However, your submission should reflect individual work and personal effort.
● Some of the topics may not be covered in class due to our limited time. You are
encouraged to find answers online. You can also reach your instructor or TAs for
● Please submit your assignment before the due date to avoid penalties or worse
risking your assignment being rejected.
● Submit one zip file called assignment2 containing 3 files:
○ one file called blackjack.h containing all the declarations of your classes
○ one file called blackjack.cpp containing the definition and implementation
of your classes’ methods
○ and another file called main.cpp containing only the main() function.
Make sure your code is clear and readable. Readability of your code as well as the
quality of your comments will be graded.
● No submission by email. Submit your work to mycourse.
● If your code does not compile on the lab machines (Trottier) it will not be graded.
● Be happy when working on your assignment, because a happy software developer
has more inspiration than a sad one :).
In this assignment we will tackle the implementation of a very simplified version of
the famous BlackJack card game. We will drop all the complicated rules and we will
consider that the game is played by one player against the computer.
The simplified rules are like this:
● Each card has a numerical value.
○ Numbered cards are counted at their face value (two counts as 2
points, three, 3 points, and so on)
○ An Ace count as either 1 point or 11 points (whichever suits the player
○ Jack, queen and king count 10 points each
● The player will compete against the computer which represents the casino.
● The goal of the player is to try to reach a total point sum of 21 without
exceeding it. Whoever exceeds 21 first loses (technically known as busting).
● At the beginning of each round, the player is dealt two open cards and the
computer is dealt one open card. The cards are open, meaning that the
values are known for both, the player and the computer (no hidden cards).
● The player will see the sum of the points from his 2 open cards and decides
whether or not to draw an additional card.
● The player may draw one additional card at a time for as long as he likes or
until he busts (sum of drawn cards exceeds 21). If he busts, he loses the
● When the player decides that he won’t draw anymore and he is happy with
whatever total amount he got, the computer will draw and open an
additional card.
● The computer will keep on drawing additional cards, one at a time as long as
the sum of its cards is less or equal 16.
● If the computer busts, the player wins.
● If the computer doesn’t bust (total sum is less or equal 21), then the total
values are compared between the computer and the player. Whomever has
a higher value wins the round.
● If the two totals are the same, no one wins the round (technically called a
Here is a list of all the needed classes to code the game:
● Card: represents a card. Each card has a rank and a type which can be easily
represented via enums.
○ Rank is one of the following {ACE = 1, TWO, THREE, FOUR, FIVE, SIX, SEVEN,
○ Type is one of the following {CLUBS, DIAMONDS, HEARTS, SPADES}
○ Card class must have the following methods:
■ getValue that would return the numerical value of a card
■ displayCard that would print to the screen the card information. For
example 1H means ace of hearts, 2D means two of diamonds, QS
means queen of spades and so on.
● Hand: represents the set of cards that the player or the computer holds. This class
should contain a list of cards that can be implemented as an array or a vector or any
data structure that you prefer. It should also have the following methods:
○ add that would add a card to the hand
○ clear that would clear all the cards from a hand (removing them)
○ getTotal that would get the total sum of the cards numerical values
● Deck: represents the deck of cards and the actions that can be performed on the
cards like shuffling and dealing. This class may inherit from the Hand class for
convenience but I keep it up to you to decide whether you would inherit or not.
Deck should implement the following methods:
○ Populate will create a standard deck of 52 cards
○ shuffle will shuffle the cards
○ deal will deal one card to a hand
● AbstractPlayer: represents a generic abstract player that can be a human or the
computer. This is an abstract class meaning that it has a pure virtual method. The
methods that this class have are:
○ virtual bool isDrawing() const = 0; which is a pure virtual method that
indicates whether a player wants to draw another card.
○ isBusted that returns true if a player has busted (sum of cards exceeds 21).
Note that AbstractPlayer may inherit from Hand for convenience but this is
left totally to you to decide.
● HumanPlayer: represents the human player. This class inherits AbstractPlayer and
should have the following methods:
○ isDrawing implements the inherited method that indicates whether a player
wants to draw another card
○ announce a method that prints information about whether the player wins,
loses or had a push situation.
● ComputerPlayer: represents the computer (the casino). This class inherits
AbstractPlayer and should have the following method:
○ isDrawing implements the inherited method that indicates whether the
computer should be drawing another card. Remember that the rules for the
computer are different. The computer should keep on drawing an
additional card as long as the sum of its cards is less or equal 16.
● BlackJackGame: a class representing the overall game. This class must have the
following data members:
○ A Deck data member m_deck
○ A ComputerPlayer member m_casino
It should also implement the following method:
○ play that plays the game of blackjack
Use the following main function to run the game:
int main()
cout << “\tWelcome to the Comp322 Blackjack game!” << endl << endl;
BlackJackGame game;
// The main loop of the game
bool playAgain = true;
char answer = ‘y’;
while (playAgain)
// Check whether the player would like to play another round
cout << “Would you like another round? (y/n): “;
cin answer;
cout << endl << endl;
playAgain = (answer == ‘y’ ? true : false);
cout <<“Gave over!”;
return 0;
The output while playing the game should be something similar to this:
Welcome to the Comp322 Blackjack table!
Casino: 8S [8]
Player: 4C 9D [13]
Do you want to draw? (y/n):y
Player: 4C 9D 7C [20]
Do you want to draw? (y/n):n
Casino: 8S 2H [10]
Casino: 8S 2H 9S [19]
Player wins.
Would you like another round? (y/n):y
Casino: 1S [11]
Player: 1C 2H [13]
Do you want to draw? (y/n):y
Player: 1C 2H 10D [13]
Do you want to draw? (y/n):y
Player: 1C 2H 10D KH [23]
Player busts.
Casino wins.
Would you like another round? (y/n):y
Casino: QS [10]
Player: 4C 4H [8]
Do you want to draw? (y/n):y
Player: 4C 4H 3S [11]
Do you want to draw? (y/n):y
Player: 4C 4H 3S JC [21]
Casino: QS 1C [21]
Push: No one wins.
Would you like another round? (y/n):n
Gave over!
Grading scheme:
● Readability of the code and quality of the comments: 10 points
● Proper calculation of the Ace value (1 vs 11) as per the instructions: 5 points
● Rank and type implemented properly as enum: 5 points
● Card::getValue() and Card::displayCard(): 10 points (5 each)
● Hand:: add, clear, getTotal: 15 points (5 each)
● Deck:: populate, shuffle, deal: 15 points (5 each)
● AbstractPlayer::isBusted: 5 points
● AbstractPlayer::isDrawing pure virtual and const: 5 points
● HumanPlayer::isDrawing , annouce : 10 points (5 each)
● ComputerPlayer::isDrawing: 5 points
● BlakJackGame::play(): 15 points

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