craps game & dice game..

This is a discussion on craps game & dice game.. within the C Programming forums, part of the General Programming Boards category; Hey guys I'm pretty much stuck on how to actually do the functions for the craps and dice game..here's the ...

  1. #1
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    Question craps game & dice game..

    Hey guys I'm pretty much stuck on how to actually do the functions for the craps and dice game..here's the criteria and what i have...


    craps criteria & dice game criteria..



    Welcome to the Casino. Here are your choices:
    1) Buy chips
    2) Sell chips
    3) Play Craps
    4) Play Arup's Game of Dice
    5) Status Report
    6) Quit
    3
    How many chips would you like to bet?
    0
    Sorry, that is not allowed. No game played.
    Welcome to the Casino. Here are your choices:
    1) Buy chips
    2) Sell chips
    3) Play Craps
    4) Play Arup's Game of Dice
    5) Status Report
    6) Quit
    3
    How many chips would you like to bet?
    10
    Press 'r' and hit enter for your first roll.
    r
    You rolled 8.
    Press 'r' and hit enter for your next roll.
    r
    You rolled 12.
    Press 'r' and hit enter for your next roll.
    r
    You rolled 6.
    Press 'r' and hit enter for your next roll.
    r
    You rolled 7.
    Sorry, you have lost.

    Welcome to the Casino. Here are your choices:
    1) Buy chips
    2) Sell chips
    3) Play Craps
    4) Play Arup's Game of Dice
    5) Status Report
    6) Quit
    4
    How many chips would you like to bet?
    17
    Press 'r' and hit enter for your first roll.
    r
    You rolled 3.
    Press 'r' and hit enter for your next roll.
    r
    You rolled 8.
    You win!



    Heres what i have..


    #include <stdio.h>
    #include <stdlib.h>
    #include <time.h>

    #define CHIP_VALUE 11
    #define SELL_VALUE 10

    //Intialize needed functions
    int pairofdice();
    int craps();
    int arupsdice();
    int buychips();
    int sellchips();
    void statusreport();
    void menu();
    Code:
        int main(void)	{
       
          int ans;
          int cash = 1000;
          int chips = 0;
       	
          do	{
          
          //Print menu and gather user response
             menu();
             scanf("%d", &ans);
          
          //Invoke proper function per user response	
             if (ans == 1)
                chips = buychips(&cash);
             else if (ans == 2)
                sellchips();			
             else if (ans == 3)
                craps ();
             else if (ans == 4)
                arupsdice();
             else if (ans == 5)
                statusreport();
             //Sort out invalid inputs from user
             else if (ans != 6)
                printf("Invalid menu choice, please select again.\n");
          
          }	while(ans != 6);
       
          printf("Thanks for visiting!!\n");
       
          return 0;
       }
    
    // Pre-conditions: None.
    // Post-conditions: Main menu will be printed and a valid user answer will be returned.
        void menu()	{
       
          printf("Welcome to the Casino. Here are your choices:\n");
          printf("1) Buy chips\n");
          printf("2) Sell chips\n");
          printf("3) Play Craps\n");
          printf("4) Play Arup's Game of Dice\n");
          printf("5) Status Report\n");
          printf("6) Quit\n");
       }
    
    // Pre-conditions: None.
    // Post-conditions: Generates two random numbers in between
    //                  one and six inclusive and returns their sum.
        int pairofdice()	{
       
          int dice1, dice2, roll;
       
          srand(time(0));
       //Random number 1 through six for each die
          dice1 = 1 + rand()%6;
          dice2 = 1 + rand()%6;
       
       //Combine for roll total
          roll = dice1 + dice2;
       
          return roll;
       }
    
    // Pre-condition: None.
    // Post-condition: Plays one game of Craps and returns
    //       			 PLAYER_WON if the player won and
    //						 PLAYER_LOST if they lost.
        int craps()	{
       
          printf("This is where you insert your code for the craps game...\n");	
       		
       }//end craps
    
    // Pre-condtion: None.
    // Post-condition: Plays one game of Arup's game of dice and
    //						 returns PLAYER_WON if the player won and
    //						 returns PLAYER_LOST if thet lost.
        int arupsdice()	{
       
          printf("This is where you insert your code for the arupsdice game...\n");
       	
       }//end arupsdice
    
    // Pre-condition: cash is the address of the variable
    //                storing the amount of money the user
    //                wants to spend on chips.
    // Post-condition: The number of chips purchased is returned
    //                 and the variable storing the amount of
    //                 money the user paid for chips is adjusted
    //                 to equal the change left over after the 
    //                 transaction.
    
        int buychips(int*cash_ptr)	{
          int Cash_4_Chips;
          int *cash_ptr;
        
          printf("How much cash do you want to spend for chips?\n");
          scanf("%d", &Cash_4_Chips);
       	
          if(Cash_4_Chips>*cash_ptr); 
       	
          printf(" Sorry, you do not have that much money. No chips bought.\n"); 
       
       
       	
       	
       
       }//End function to buy chips
    
    // Pre-conditions: numchips > 0.
    // Post-conditions: Returns the cash obtained for selling
    //                  numchips number of chips.
        int sellchips()	{
       
          printf("This is where you insert your code for selling chips...\n");
       
       }//End function to sell chips	
    	
    // Pre-condition: The first parameter is the number of
    //                chips the use has, the second is how
    //                much cash they currently have.
    // Post-condition: A report detailing the number of chips
    //                 and the amount of cash the user has is
    //                 printed.
        void statusreport()	{
       
          printf("This is where you insert your code for the status report...\n");
       
       }//Emd status report
             return 0;
    
    }


    I'm confused on how to do it because I looked at other examples on the site for craps.. Would appreciate it a lot for help

  2. #2
    Frequently Quite Prolix dwks's Avatar
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    Canada
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    8,048
    You're only supposed to call srand() once during the execution of a program. The best place to put it is in main().

    You have some stray code at the end:
    Code:
             return 0;
    
    }
    Just get rid of it.

    Code:
        int buychips(int*cash_ptr)	{
          int Cash_4_Chips;
          int *cash_ptr;
    You will most likely get a warning here. Something to the effect of "shadowing a parameter". Get rid of the code in red.

    Code:
        int buychips(int*cash_ptr)	{
          int Cash_4_Chips;
          int *cash_ptr;
        
          printf("How much cash do you want to spend for chips?\n");
          scanf("%d", &Cash_4_Chips);
       	
          if(Cash_4_Chips>*cash_ptr);
       	
          printf(" Sorry, you do not have that much money. No chips bought.\n"); 
       
       
       	
       	
       
       }//End function to buy chips
    Because of the extra semicolon after your if, the printf() will always execute.

    You never return a value from this function.

    As for craps() . . . you'll need a while loop.
    dwk

    Seek and ye shall find. quaere et invenies.

    "Simplicity does not precede complexity, but follows it." -- Alan Perlis
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  3. #3
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    Mar 2006
    Posts
    5

    Question revised

    ok here's my revised version...


    #include <stdio.h>
    #include <stdlib.h>
    #include <time.h>

    #define CHIP_VALUE 11
    #define SELL_VALUE 10

    //Intialize needed functions
    int pairofdice();
    int craps();
    int arupsdice();
    int buychips();
    int sellchips();
    void statusreport();
    void menu();

    int main(void) {
    Code:
          int ans;
          int cash = 1000;
          int chips = 0;
       	srand(time(0))
          do	{
          
          //Print menu and gather user response
             menu();
             scanf("%d", &ans);
          
          //Invoke proper function per user response	
             if (ans == 1)
                chips = buychips(&cash)
             else if (ans == 2)
                sellchips();			
             else if (ans == 3)
                craps ();
             else if (ans == 4)
                arupsdice();
             else if (ans == 5)
                statusreport();
             //Sort out invalid inputs from user
             else if (ans != 6)
                printf("Invalid menu choice, please select again.\n");
          
          }	while(ans != 6);
       
          printf("Thanks for visiting!!\n");
       
          return 0;
       }
    
    // Pre-conditions: None.
    // Post-conditions: Main menu will be printed and a valid user answer
    //                  will be returned.
        void menu()	{
       
          printf("Welcome to the Casino. Here are your choices:\n");
          printf("1) Buy chips\n");
          printf("2) Sell chips\n");
          printf("3) Play Craps\n");
          printf("4) Play Arup's Game of Dice\n");
          printf("5) Status Report\n");
          printf("6) Quit\n");
       }
    
    // Pre-conditions: None.
    // Post-conditions: Generates two random numbers in between
    //                  one and six inclusive and returns their sum.
        int pairofdice()	{
       
          int dice1, dice2, roll;
       
          
       //Random number 1 through six for each die
          dice1 = 1 + rand()%6;
          dice2 = 1 + rand()%6;
       
       //Combine for roll total
          roll = dice1 + dice2;
       
          return roll;
       }
    
    // Pre-condition: None.
    // Post-condition: Plays one game of Craps and returns
    //       			 PLAYER_WON if the player won and
    //						 PLAYER_LOST if they lost.
        int craps()	{
       
          printf("This is where you insert your code for the craps game...\n");	
       		
       }//end craps
    
    // Pre-condtion: None.
    // Post-condition: Plays one game of Arup's game of dice and
    //						 returns PLAYER_WON if the player won and
    //						 returns PLAYER_LOST if thet lost.
        int arupsdice()	{
       
          printf("This is where you insert your code for the arupsdice game...\n");
       	
       }//end arupsdice
    
    // Pre-condition: cash is the address of the variable
    //                storing the amount of money the user
    //                wants to spend on chips.
    // Post-condition: The number of chips purchased is returned
    //                 and the variable storing the amount of
    //                 money the user paid for chips is adjusted
    //                 to equal the change left over after the 
    //                 transaction.
    
        int buychips(int*cash_ptr)	{
          int Cash_4_Chips;
        
          printf("How much cash do you want to spend for chips?\n");
          scanf("%d", &Cash_4_Chips);
       	
          if(Cash_4_Chips>*cash_ptr); 
       	
          printf(" Sorry, you do not have that much money. No chips bought.\n"); 
       
       
       	
       	
       
       }//End function to buy chips
    
    // Pre-conditions: numchips > 0.
    // Post-conditions: Returns the cash obtained for selling
    //                  numchips number of chips.
        int sellchips()	{
       
          printf("This is where you insert your code for selling chips...\n");
       
       }//End function to sell chips	
    	
    // Pre-condition: The first parameter is the number of
    //                chips the use has, the second is how
    //                much cash they currently have.
    // Post-condition: A report detailing the number of chips
    //                 and the amount of cash the user has is
    //                 printed.
        void statusreport()	{
       
          printf("This is where you insert your code for the status report...\n");
     
       }//End status report

  4. #4
    Registered User
    Join Date
    Mar 2006
    Posts
    5
    well i have everything for the sell of chips.. but the status report is getting really difficult.Idon't know whether i need a equation or a for loop after the void statusreport...


    Code:
    //                  numchips number of chips.
        int sellchips(int *numchips_ptr) {
          int chipsB;
          int chips_sold;
          int Chips_4_Sale;
        
        
          printf("How many chips do you want to sell?\n");
          scanf("%d", &Chips_4_Sale);
       	
          if(Chips_4_Sale>*numchips_ptr)
          {
             printf("Sorry, you do not have that many chips.  No chips sold.\n");
          }
          else
          {
             chipsB=Chips_4_Sale/SELL_VALUE;
             chips_sold=chipsB*SELL_VALUE;
             *numchips_ptr=*numchips_ptr-chips_sold;
          }
          
          return chipsB;
          	
       }//End function to sell chips	
    	
    // Pre-condition: The first parameter is the number of
    //                chips the use has, the second is how
    //                much cash they currently have.
    // Post-condition: A report detailing the number of chips
    //                 and the amount of cash the user has is
    //                 printed.
        void statusreport()	{
        
        int Cash_4_Chips
        
       
          printf("\n");
       
       }//End status report

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