Programing Assignment – Blackjack
Using C language
1. The basic rules of game
A deck of poker cards are used. For simplicity, we have unlimited number of cards, so we can generate a random card without considering which cards have already dealt. The game here is to play as a player against the computer (the dealer). The aim of the game is to accumulate a higher total of points than the dealer’s, but without going over 21. The cards 2 to 10 have their face values as points. J, Q, and K are10 points each, and the Ace is either 1 point or 11 points (player’s choice). To simplify the matter, we consider that the Ace is 11 points and we don’t have card J, Q, or K unless you like to implement the option anyway.
The player first places a bet. Let’s assume the minimum bet is $10 and maximum = is $1000.
b) Each play will result in one of the following events for the player
c) The start of the game
At the start, the player and the dealer receive two cards each. The player’s cards are normally dealt face up (displayed), while the dealer has one face down (called the hole card) and one face up. The best possible blackjack hand is an opening deal of an Ace with any of the ten-point cards. This is called a “blackjack”, or a natural 21, and the player holding this automatically wins unless the dealer also has a blackjack. If a player and the dealer each have a blackjack, the result is a push.
d) The player’s turn
The player can keep his hand as it is (stand) or take more cards from the deck (hit), one at a time, until either the player judges that the hand is strong enough to go up against the dealer’s hand and stands, or until it goes over 21, in which case the player immediately loses (busted).
e) The dealer’s turn
The dealer turns over the hidden hole card. The dealer hits (takes more cards) or stands depending on the value of the hand. The dealer must hit if the value of the hand is lower than 17, otherwise the dealer stands.
If the dealer is busted, the player wins. Otherwise the player wins if s/he has a higher score, loses if s/he has a lower score, or pushes if s/he has the same score as the dealer.
Blackjack consideration is not required, unless you like to implement the option anyway. By the way, a blackjack hand beats any other hand, also those with a total value of 21 but with more cards (which is not a natural blackjack).
f) The program towards the end
If the player won or lost, s/he must decide whether to quit or to play another game unless the player runs out of money. Your program should give the player an initial betting amount of $1000.00.
2. The specific design of this assignment
a) The main() program and its variables
You will need to decide on appropriate variables in which to store the player’s bankroll (in order to keep track of how much money or how many points the player has), the bet at a game, and other information. Let’s use an integer array gamerecord to store how many times the player won, lost, hit a blackjack, and got busted. (Again, blackjack is optional).
The bankroll, bet, and gamerecord should be kept up to date on the player’s current status. (The program calls playing() to play a game, as discussed below. )
After each game, the program must report the result of the game: the amount of money won or lost, the current value of the bankroll, how many times the player won and lost, and how many times the player hit a blackjack and got busted. (You may want to record and report how many times the dealer got busted as well, as an option.)
After each game (by calling playing()), the program should allow the player to continue playing until s/he chooses to quit, or until s/he runs out of money. This central program control may be done within main(), in a do-while loop: 1) call playing() to play a game; 2) check whether to play again. We will add some more components later.
b) “Dealing” the card: the dealing() function
A separate dealing() function will be used to generate a card number. You may want to implement and double check this function first. You will use a random number generator. The random number generator needs to be seeded with the current time at the beginning of the main program. The possible random values generated are 1 to 10 (or 13 if J, Q, and K are considered), representing the cards’ face values. This function will return the number generated. The return value 1 represent the Ace’s face value (and the return value 11, 12, and 13 are J, Q, and K’s face value, respectively.) A large random number n can be converted to a value between 1 to 13 by: (1 + n%13).
c) “Playing” the game: playing() function
A second function playing() will be used to play a single game until the player either wins or loses a bet, based upon the rules given above. This function should get a bet, modify the current amount of the player’s bank roll according to the game result, modify the gamerecord array values of the player won or lost, and the player hit the blackjack or got busted. These values are returned through function parameters by address passing in playing().
Within the function, the player is asked to place a bet (10 to 1000 within the bankroll amount), so the corresponding value is read from the keyboard. The system (dealer) then “deals the cards” (simulated by calling the function dealing(), one card at a time). After each dealing, this function should report the card values, except the dealer’s hole card. The function should have two variables to store the player and the dealer’s scores. Remember face value 1 represents score 11 (or 1 if you want to be more complete as an option, and 11, 12, or 13 represents score 10).
The player can keep his hand as it is (stand) or take more cards from the deck (hit), one at a time, until either the player judges that the hand is strong enough to go up against the dealer’s hand and stands, or until it goes over 21, in which case the player immediately loses the bet.
The dealer turns over his hidden hole card by displaying the hold card face value, and starts the game process automatically until the dealer wins or loses.
d) “Ending” and “Beginning” of the game
This part is implemented after you have done your programming as described above already.
You need a separate function ending() to do the following: you should report the current value of the bank roll, how many times the player won, lost, hit a blackjack, and went busted. You need to save the above information into a text file as well.
You need a separate function beginning() to do the following at the beginning of your program in main(): the function will open the text file you used to save the game information for reading if it exists, so that your game can continue from previous played results. If the file does not exist or the bank roll has a balance below the minimum bet, you start the game from scratch as usual, and report “new game” or “continual game”.
So, main() includes 1) beginning(); 2) a loop: playing(); 3) ending();
3. Additional functions may be necessary and/or appropriate, depending upon the final overall design of your program.
It’s your choice to have minor variations, but you should have the required components.
4. Testing and Submitting
Test your program to make sure it compiles and runs properly in various types of cases.
When your program is finished, write a short program report in plain text format. Your report should describe any functions that are not implemented and any bugs that still remain in your program.
Show your output by compiling it and demonstrating it where the user plays at least three full games. You should submit your program report, and the source file of your program.
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