Poker Program

This is a discussion on Poker Program within the C Programming forums, part of the General Programming Boards category; This one is really vexing me. I'm writing a rudimentary poker program, and I created this function that, as far ...

  1. #1
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    Nov 2010
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    14

    Poker Program

    This one is really vexing me. I'm writing a rudimentary poker program, and I created this function that, as far as I can tell, should work. It's designed to evaluate a 2x5 array called wHand--where row 0 represents the suit and row 1 represents the face value--and determine if there's a pair:
    Code:
    void pair (int wHand[][5], int eval, int highcard)
    {
    	int column1 = 0;
    	int column2 = 0;
    
    	for (column1 = 0; column1 <=3; column1++)
    	{
    		for (column2 = column1+1; column2 <=4; column2++)
    		{
    			if (wHand[1][column1] == wHand[1][column2]) /*pair*/
    			{
    				eval = 2; /*pair*/
    				highcard = wHand[1][column1];
    			}
    		}
    	}
    }
    The thing is, when I run it, even if the hand has a pair, eval and highcard don't change from their default value of zero. What am I doing wrong?

    Full code (one header, two source files):
    poker.h
    Code:
    #ifndef POKER_H
    #define POKER_H
    
    #include <stdio.h>
    #include <stdlib.h>
    #include <time.h>
    
    void shuffle (int wDeck[][13]);
    void deal (const int wDeck[][13], const char *wFace[], const char *wSuit[], int wHand[][5], int *dealtp, int *player);
    void pair (int wHand[][5], int eval, int highcard);
    /*void twopair (wHand[][5], int eval, int highcard);
    void threekind (wHand[][5], int eval, int highcard);
    void straight (wHand[][5], int eval, int highcard);
    void flush (wHand[][5], int eval, int highcard);
    void fourkind (wHand[][5], int eval, int highcard);*/
    
    
    #endif
    poker.c
    Code:
    #include "poker.h"
    
    /* shuffle cards in deck */
    
    void shuffle (int wDeck[][13])
    {
    	int row = 0;    /* row number */
    	int column = 0; /*column number */
    	int card = 0;   /* card counter */
    	int eval1 = 0;
    	int evalAI = 0;
    
    	/* for each of the 52 cards, choose slot of deck randomly */
    	for (card = 1; card <= 52; card++)
    	{
    		/* choose new random location until unoccupied slot found */
    		do
    		{
    			row = rand () % 4;
    			column = rand () % 13;
    		} while (wDeck[row][column] != 0);
    
    		/* place card number in chosen slot of deck */
    		wDeck[row][column] = card;
    	}
    }
    
    /* deal cards in deck */
    void deal (const int wDeck[][13], const char *wFace[], const char *wSuit[], int wHand[][5], int *dealtp, int *player)
    {
    	int row = 0;    /* row number */
    	int column = 0; /*column number */
    	int card = 0;   /* card counter */
     
    	/* deal 5 cards */
    	for (card = 1; card <= 5; card++)
    	{
    		*dealtp = *dealtp + 1;
    		/* loop through rows of wDeck */
    		for (row = 0; row <= 3; row++)
    		{
    			/* loop through columns of wDeck for current row */
    			for (column = 0; column <= 13; column++)
    			{
    				/* if slot contains current card, display card */
    				if (wDeck[row][column] == *dealtp)
    				{
    					if (*player==1)
    						{
    						printf ("%5s of %-8s%c", wFace[column], wSuit[row], card % 2 == 0 ? '\n' : '\t');
    						}
    					wHand[0][card - 1] = row;
    					wHand[1][card - 1] = column;
    				}
    			}
    
    		}
    	}
    }
    void pair (int wHand[][5], int eval, int highcard)
    {
    	int column1 = 0;
    	int column2 = 0;
    
    	for (column1 = 0; column1 <=3; column1++)
    	{
    		for (column2 = column1+1; column2 <=4; column2++)
    		{
    			if (wHand[1][column1] == wHand[1][column2]) /*pair*/
    			{
    				eval = 2; /*pair*/
    				highcard = wHand[1][column1];
    			}
    		}
    	}
    }
    main.c
    Code:
    #include "poker.h"
    
    
    int main (void)
    {
    	/* initialize suit array */
    	const char *suit[4] = {"Hearts", "Diamonds", "Clubs", "Spades"};
    
    	/* initialize face array */
    	const char *face[13] = {"Ace", "Deuce", "Three", "Four", "Five", "Size", "Seven", "Eight",
    		"Nine", "Ten", "Jack", "Queen", "King"};
    
    	/* initalize deck array */
    	int deck[4][13] = {0};
    	int handP1[2][5] = {0};
    	int handAI[2][5] = {0};
    	int player = 0;
    	int dealt = 0;
    	int evalP1 = 0;
    	int evalAI = 0;
    	int highP1 = 0;
    	int highAI = 0;
    
    
    	srand ((unsigned) time (NULL)); /* see random-number generator */
    
    	shuffle (deck);
    	player = 1;
    	deal (deck, face, suit, handP1, &dealt, &player);
    	player = 2;
    	deal (deck, face, suit, handAI, &dealt, &player);
    	pair (handP1, evalP1, highP1);
    
    
    	return 0;
    }
    Last edited by DenJansen; 12-20-2010 at 11:48 PM.

  2. #2
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    Join Date
    Nov 2010
    Posts
    14
    /facepalm

    Derp. I'm trying to output two values in a single function. Turned highcard into a pointer and now it works. Nevermind.
    Last edited by DenJansen; 12-21-2010 at 12:00 AM.

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