help with a craps game!

This is a discussion on help with a craps game! within the C Programming forums, part of the General Programming Boards category; Ok, first i'll give the assignment and then i'll say my ideas..but please help me just start the program because ...

  1. #1
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    Unhappy help with a craps game!

    Ok, first i'll give the assignment and then i'll say my ideas..but please help me just start the program because as usual, i dont know where to begin:
    -You are to crate a simple craps game using functions exclusively (very little will be used in main)
    ~the user will start with 200 dollars
    ~prompt the user to bet an amount of their remaining cash
    ~wins or losses will be added or subtracted from the user's cash reserve
    ~ the use will then be prompted if they wish to ontinue playing, unless they have no money left in which case the game will end.
    -------

    okay, so i'm not allowed to use an global variables and as it says, i need to use all functions. so first, in main i though that i'd ask the person's name and set the TotalCash to 200. but then i don't understand how to "send" that information to each of the following functions that i'll be making.
    and then after main, i want to make a menu function to explain to the user the rules of the game along with the option to begin playing. and then it'd go to the 'first bet' function and ask for a bet ect, and check to see if they have enough money.

    my main question is how do i send things to different functions???

    thank you,
    jessie

  2. #2
    Green Member Cshot's Avatar
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    You need to declare local variables inside your main and pass them as parameters to your function. You can pass pointers to the functions or just grab the return values.

    For example:

    Code:
    int GetBet()
    {
       int x;
       printf("Enter a bet:\n");
       scanf("%d", x);
       return x;
    }
    
    void GetBet2(int *x)
    {
       printf("Enter a bet:\n");
       scanf("%d", x);
    }
    
    void PrintBet(int a, int b)
    {
       printf("Bet1 = %d\nBet2 = %d\n", a, b);
    }
    
    int main()
    {
       int bet, bet2;
       // like this
       bet =  GetBet();
       // or like this
       GetBet2(&bet2);
    
       // pass info to function
       PrintBet(bet, bet2);
    
       return 0;
    }
    Try not.
    Do or do not.
    There is no try.

    - Master Yoda

  3. #3
    Banned master5001's Avatar
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    You may want to make a structure that holds vital information and pass referrences of that structure to the functions:

    Code:
    struct player {
        char name[8];   //a short name
        int money;        //the amount of money
        char bet[50];
    };
    
    //the bet member is a boolean type.
    //1 means a bet has been placed in a certain
    //position, 0 means it has not.
    //you decide which index represents
    //which place on the board
    
    void PlaceBet(struct player *);
    
    int main(void) {
        struct player me;
    
        //ask for bets
        ...
        PlaceBet(&me);
        ...
        //do other stuff here
        return 0;
    }

  4. #4
    Registered User Azuth's Avatar
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    Do you think the instructor would class a structure as global variables?
    Demonographic rhinology is not the only possible outcome, but why take the chance

  5. #5
    Banned master5001's Avatar
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    Not if you don't use a global structure you are good and your professor will be happy. For example:

    Code:
    struct some_struct {
        int x, y;
    };
    
    struct some_struct unhappy_teacher;
    
    int main(void) {
        //code goes here
        return 0;
    }
    But this does not use any globals:

    Code:
    struct some_struct {
        int x, y;
    };
    
    int main(void) {
        struct some_struct teacher_is_happy;
        //code here
        return 0;
    }
    So go you aren't using a loop-hole you are using your brain.

  6. #6
    Black Mage Extraordinaire VegasSte's Avatar
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    This might sound like a silly question, but what is craps??

  7. #7
    Banned master5001's Avatar
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    Its not a silly question. It is a vegas game. It is a game that is bases on betting on probabilities of rolls of two dice. They probably have it on yahoo games or something. I'm sure you can find somewhere to play it online for fun.

  8. #8
    Black Mage Extraordinaire VegasSte's Avatar
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    Cheers!

  9. #9
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    thanks a lot for replying, everyone. but i dont even know what a structure is....

    um here is what i have so far. its obviously very very wrong because it doesn't even run...

    Code:
    #include <stdio.h>
    #include <time.h>
    #include <stdlib.h>
    
    
    char *name ()
    
    {
    	static char name[20];
    	printf("Please enter your name:");
    	scanf("%s", name);
    	return name;
    
    }
    
    
    
    
    int main ()
    
    {
    	int TotalCash=200;
    	return TotalCash;
    /*What else do i put in main??*/
    }
    
    
    void FirstBet ()
    
    {
    	
    	int Dice1=rand()%6+1;
    	int Dice2=rand()%6+1;
    	int Sum=Dice1+Dice2;
    	int bet;
    	printf("Enter a bet:\n");
    	scanf("%d", &bet);
    	
    	if (bet<=200) /*do nested if statements work here??*/
    	     if (bet>0)
    	printf("You rolled a %d and a %d. The total is %d", Dice1, Dice2, Sum);
    	else
    	printf("Enter a new bet.");
    		
    	
    }
    [edit]Nice try with the code tags, but its a forward slash, not a backslash. Hammer.

  10. #10
    Skunkmeister Stoned_Coder's Avatar
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    I wrote a c++ craps game a couple of weeks ago. It was going to become part of a tutorial on enums.
    its in c++ and is incomplete(just the play function shown) but it shows how you could write code to play craps.
    Code:
    void PlayGame()
    
    	{
    		InitRandGen();
    		enum Status { CONTINUE, WON, LOST };
    		Status GameStatus; // controls individual game
    		bool quit = false; // controls game loop
    		HSEntry HighScores[5]; // high scores table
    		memset(HighScores,0,5*sizeof(HSEntry)); // zero hs table
    		ReadHS(HighScores);
    		maximise();
    		cursoroff();
    		PrintHS(HighScores);
    		WelcomeScreen();
    		
    		long Savings = 10; // This is the players cash. $10 to start.
    		int Die1 = 0, Die2 = 0; // The dice 
    		int Sum = 0; // total of dice
    		int Stake = 0; // The bet.
    		int Point = 0; // The point to make if needed
    		int HouseWins = 0, PlayerWins = 0;
    		
    		while (!quit)
    		{
    			StatScreen(Die1, Die2, Sum, Stake, Savings, Point, HouseWins, PlayerWins);
    			
    			if (Savings == 0) // out of money
    			{
    				gotoxy(0,8);
    				colour(BBLUE | TLTYELLOW);
    				cout << "YOU ARE OUT OF MONEY !!!!! LOSER!!!!! Loser press any key!                          " << flush;
    				_getch(); //*****msvc specific call*****
    				PrintHS(HighScores);
    				return;
    			}
    
    			Stake = GetWager(Savings); // savings altered here to account for stake
    			Sum = RollDice(Die1, Die2); // die1,die2 by ref.
    			
    			switch(Sum)
    			{
    					case 7:
    					case 11:	GameStatus = WON;
    								PlayerWins ++;
    								Savings += Stake * 2; // Pay up for win
    								Stake=0; // reset stake ready for statscreen
    								StatScreen(Die1, Die2, Sum, Stake, Savings, Point, HouseWins, PlayerWins);
    								PWin();
    								break;
    
    					case 2:
    					case 3:
    					case 12:	GameStatus = LOST;
    								HouseWins ++;
    								Stake=0; // reset for statscreen
    								StatScreen(Die1, Die2, Sum, Stake, Savings, Point, HouseWins, PlayerWins);
    								HWin();
    								break;
    
    					default:	GameStatus = CONTINUE;
    								Point = Sum;
    								StatScreen(Die1, Die2, Sum, Stake, Savings, Point, HouseWins, PlayerWins);
    								ReThrow();
    								break;
    			}
    
    			while ( GameStatus == CONTINUE )
    			{
    					StatScreen(Die1, Die2, Sum, Stake, Savings, Point, HouseWins, PlayerWins);
    					Sum = RollDice(Die1, Die2);
    					if (Sum == Point)
    					{
    						GameStatus = WON;
    						PlayerWins ++;
    						Savings += Stake * 2;
    						Stake=0;
    						Point = 0;
    						StatScreen(Die1, Die2, Sum, Stake, Savings, Point, HouseWins, PlayerWins);
    						PWin();
    					}
    					else
    					if (Sum == 7)
    					{
    						GameStatus = LOST;
    						HouseWins ++;
    						Stake=0;
    						StatScreen(Die1, Die2, Sum, Stake, Savings, Point, HouseWins, PlayerWins);
    						Point = 0;
    						HWin();
    					}
    					else 
    					{
    						StatScreen(Die1, Die2, Sum, Stake, Savings, Point, HouseWins, PlayerWins);
    						ReThrow();						
    					}
    			}
    
    			if(Savings) quit=AskForContinue();
    			if(quit == true)
    			{
    				if(Savings > HighScores[0].score)
    				{
    					clrscr();
    					const int SIZE = 256;
    					char buffer[SIZE];
    					gotoxy(0,8);
    					colour(BBLUE | TLTYELLOW);
    					cout << "You have made it onto the high scores board. Congratulations!!!!" << endl;
    					cout << "Please enter your name :- ";
    					cin.getline(buffer,SIZE);
    					HighScores[0].score = Savings;
    					strncpy(HighScores[0].name,buffer,20);
    					BubbleSort(HighScores);
    					WriteHS(HighScores);
    					PrintHS(HighScores);
    				}
    			}
    
    		}
    
    	}
    Free the weed!! Class B to class C is not good enough!!
    And the FAQ is here :- http://faq.cprogramming.com/cgi-bin/smartfaq.cgi

  11. #11
    Black Mage Extraordinaire VegasSte's Avatar
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    167
    that is very hard to follow for someone with no c++ experience..

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