Code:
// Draw Poker Program
/* This program plays draw poker. Users can play as often as they want, betting between 1 and 5. They are dealt
5 cards and then get to choose which cards to keep, and which cards to replace. The new hand is then reviewed
and the user's payout is set based on the value of the hand. The user's new bankroll is displayed as they are
given the option to continue. */
// Header files
#include <stdio.h>
#include <time.h>
#include <ctype.h>
#include <stdlib.h>
// Two constants defined for determining whether hands are flushes or straights
#define FALSE 0
#define TRUE 1
// Function prototyping
void printGreeting();
int getBet();
char getSuit(int suit);
char getRank(int rank);
void getFirstHand(int cardRank[], int cardSuit[]);
void getFinalHand(int cardRank[], int cardSuit[], int finalRank[], int finalSuit[], int ranksinHand[], int suitsinHand[]);
int analyzeHand(int ranksinHand[], int suitsinHand[]);
int main() {
int bet;
int bank = 100;
int i;
int cardRank[5]; // Will be one of 13 values (Ace-King)
int cardSuit[5]; // Will be one of 4 values (for Clubs, Diamonds, Hearts, Spades
int finalRank[5];
int finalSuit[5];
int ranksinHand[13]; // Used for evaluating the final hand
int suitsinHand[4]; // Used for evaluating the final hand
int winnings;
time_t t;
char suit, rank, stillPlay;
/* This function is called outside the do...while loop because the greeting only needs to be displayed once, while
everything else in main will run multiple times, depending on how many times the user wants to play. */
printGreeting();
// Loop runs each time the user plays a hand of draw poker
do {
bet = getBet();
srand(time(&t));
getFirstHand(cardRank, cardSuit);
printf("Your five cards: \n");
for (i = 0; i < 5; i++) {
suit = getSuit(cardSuit[i]);
rank = getRank(cardRank[i]);
printf("Card #%d: %c%c\n", i+1, rank, suit);
}
/* These two arrays are used to figure out the value of the player's hand. However, they must be zeroed out in
case the user plays multiple hands. */
for (i = 0; i < 4; i++) {
suitsinHand[i] = 0;
}
for (i = 0; i < 13; i++) {
ranksinHand[i] = 0;
}
getFinalHand(cardRank, cardSuit, finalRank, finalSuit, ranksinHand, suitsinHand);
printf("Your five final cards: \n");
for (i = 0; i < 5; i++) {
suit = getSuit(finalSuit[i]);
rank = getRank(finalRank[i]);
printf("Card #%d: %c%c\n", i+1, rank, suit);
}
winnings = analyzeHand(ranksinHand, suitsinHand);
printf("You won %d!\n", bet*winnings);
bank = bank - bet + (bet*winnings);
printf("\nYour bank is now %d.\n", bank);
printf("\nDo you want to play again? ");
scanf(" %c", &stillPlay);
}
while (toupper(stillPlay) == 'Y');
return 0;
}
/***********************************************************************************************/
// Print a quick greeting as well as tell the users the value of different winning hands.
void printGreeting() {
printf("\n\nWelcome to Alex's Casino\n\n");
printf("Here are the rules:\n");
printf("You start with 100 credits, and you make a bet from 1 to 5 credits. You are dealth 5 cards, and ");
printf("you then choose which cards to keep or discard. You want to make the best possible hand. Here is ");
printf("the table for winnings (assuming a bet of 1 credit): ");
printf("\nPair\t\t\t\t1 credit");
printf("\nTwo Pairs\t\t\t\t2 credit2");
printf("\nThree of a Kind\t\t\t\t3 credits");
printf("\nStraight\t\t\t\t4 credits");
printf("\nFlush\t\t\t\t5 credits");
printf("\nFull House\t\t\t\t8 credits");
printf("\nFour of a Kind\t\t\t\t10 credits");
printf("\nStraight Flush\t\t\t\t20 credits");
printf("\n\nHave fun!\n\n");
}
// Function to deal the first five cards
void getFirstHand(int cardRank[], int cardSuit[]) {
int i, j;
int cardDup;
for (i = 0; i < 5; i++) {
cardDup = 0;
do {
// Card rank is one of 13 (2-10, J, Q, K, A)
cardRank[i] = (rand() % 13);
// Card suit is one of 4 (club, diamond, heart, spade)
cardSuit[i] = (rand() % 4);
// Loop that ensures each card is unique
for (j = 0; j < i; j++) {
if ((cardRank[i] == cardSuit[j]) && (cardSuit[i] == cardSuit[j])) {
cardDup = 1;
}
}
}
while (cardDup == 1);
}
}
// Function that changes the suit integer value to a character representing the suit
char getSuit(int suit) {
switch (suit) {
case 0: return('c');
case 1: return('d');
case 2: return('h');
case 3: return('s');
}
}
// Function that changes the rank integer value to a character representing the rank
char getRank(int rank) {
switch (rank) {
case 0: return('A');
case 1: return('2');
case 2: return('3');
case 3: return('4');
case 4: return('5');
case 5: return('6');
case 6: return('7');
case 7: return('8');
case 8: return('9');
case 9: return('T');
case 10: return('J');
case 11: return('Q');
case 12: return('K');
}
}
// Function to get the user's bet between 1 and 5
int getBet() {
int bet;
// Will keep running until the user enters 0-5
do {
printf("How much do you want to bet? (Enter a number 1 to 5, or 0 to quit the game): ");
scanf(" %d", &bet);
if (bet >= 1 && bet <= 5) {
return(bet);
}
else if (bet == 0) {
exit(1);
}
else {
printf("\n\nPlease enter a bet from 1-5 or 0 to quit the game.\n");
}
}
while ((bet < 0) || (bet > 5));
}
// Last function reviews the final hand and determines the value of the hand
int analyzeHand(int ranksinHand[], int suitsinHand[]) {
int num_consec = 0;
int rank, suit;
int straight = FALSE;
int flush = FALSE;
int four = FALSE;
int three = FALSE;
int pairs = 0;
for (suit = 0; suit < 4; suit++)
if (suitsinHand[suit] == 5)
flush = TRUE;
rank = 0;
while (ranksinHand[rank] == 0)
rank++;
for (; rank < 13 && ranksinHand[rank]; rank++)
num_consec++;
if (num_consec == 5) {
straight = TRUE;
}
for (rank = 0; rank < 13; rank++) {
if (ranksinHand[rank] == 4)
four = TRUE;
if (ranksinHand[rank] == 3)
three = TRUE;
if (ranksinHand[rank] == 2)
pairs++;
}
if (straight && flush) {
printf("Straight flush\n\n");
return (20);
}
else if (four) {
printf("Four of a kind\n\n");
return (10);
}
else if (three && pairs == 1) {
printf("Full house\n\n");
return (8);
}
else if (flush) {
printf("Flush\n\n");
return (5);
}
else if (straight) {
printf("Straight\n\n");
return (4);
}
else if (three) {
printf("Three of a kind\n\n");
return (3);
}
else if (pairs == 2) {
printf("Two pairs\n\n");
return (2);
}
else {
printf("High Card\n\n");
return (0);
}
}
/* This function looks through each of the five cards in the first hand and asks the user if they want to keep the
card. If they say no, they get a replacement card. */
void getFinalHand(int cardRank[], int cardSuit[], int finalRank[], int finalSuit[], int ranksinHand[], int suitsinHand[]) {
int i, j, cardDup;
char suit, rank, ans;
for (i = 0; i < 5; i++) {
suit = getSuit(cardSuit[i]);
rank = getRank(cardRank[i]);
printf("Do you want to keep card #%d: %c%c?", i+1, rank, suit);
printf("\nPlease answer (Y/N): ");
scanf(" %c", &ans);
if (toupper(ans) == 'Y') {
finalRank[i] = cardRank[i];
finalSuit[i] = cardSuit[i];
ranksinHand[finalRank[i]]++;
suitsinHand[finalSuit[i]]++;
continue;
}
else if (toupper(ans) == 'N') {
cardDup = 0;
do {
cardDup = 0;
finalRank[i] = (rand() % 13);
finalSuit[i] = (rand() % 4);
// First check your new card against the 5 original cards to avoid duplication
for (j = 0; j < 5; j++) {
if ((finalRank[i] == cardRank[j]) && (finalSuit[i] == cardSuit[j])) {
cardDup = 1;
}
}
// Next, check the new card against any newly drawn cards to avoid duplication
for (j=0; j<i; j++) {
if ((finalRank[i] == finalRank[j]) && (finalSuit[i] == finalSuit[j])) {
cardDup = 1;
}
}
}
while (cardDup == 1);
ranksinHand[finalRank[i]]++;
suitsinHand[finalSuit[i]]++;
}
}
}
Any help would be greatly appreciated. 
Control may reach end of non-void function - 3 Warnings
