I have a problem with this casino game. My function for craps doesn't execute properly. The craps game has
1) Roll a pair of fair six-sided dice.
2) If you roll a 7 or 11, you win!
3) If you roll a 2, 3, or 12, you lose.
4) Otherwise, record what you've rolled. Let this sum be k; also known as your point.
5) If you rolled a point, continue rolling the pair of dice until you get either your point (k) or a sum of seven on the two dice.
6) If k comes up first, you win!
7) If 7 comes up first, you lose.
can anyone tell me what i did wrong?
CODE
#include <stdio.h>
#include <time.h>
#include <stdlib.h>
#define CHIP_BUYING 11 //Cost to buy chips.
#define CHIP_SELLING 10 //Cost to sell chips.
//Prints Main menu.
int menu ();
//Generates two random numbers in between 1 and 6 inclusive and returns their sum.
int pairofdice ();
//Plays the game of Craps
int craps();
//Plays the game of Arup's dice.
int arupsdice();
//Buys chips from the user during the game.
int buyschips(int *cash_ptr);
//Allows user to sell chips back to the casino.
int sellchips(int numchips);
//Prints out a report detailing the number of chips and the amount of cash the user has.
void statusreport(int numchips, int cash);
int main (void)
{
//Declare variables.
int choice, start_cash = 1000; //Choice of user and cash that user is offered to play by casino.
int numchips = 0; // Number of chips that user will have during casino game.
int cash;
int cash_ptr; //Pointer to cash that holds amount of money user wants to spend.
int cash_amount = 0; // Cash obtained when chips are sold.
int bet_chips= 0; // How many chips user wants to bet.
int game; // Begins the casino game selected;
int PLAYER_WON, PLAYER_LOST;
// Seed the random number generator.
srand(time(0));
cash = start_cash;
// Offer menu to user and store choice.
choice = menu ();
// Loop until the user chooses to quit. The loop is broken once user chooses choice 6 to quit.
while (choice !=6) {
if (choice == 1){
numchips += buychips(&cash);
choice = menu ();
}
if (choice == 2){
cash_amount = sellchips(numchips);
numchips -= (cash_amount/CHIP_SELLING);
cash += cash_amount;
choice = menu ();
}
if (choice == 3){
printf("How many chips would you like to bet?\n\n");
scanf("%d", &bet_chips);
//Nullify transaction if no chips are bet.
if ( bet_chips == 0 || bet_chips > numchips)
printf("Sorry that is not allowed. No game played.\n\n");
// Else execute transaction.
else {
game = craps();
if (game == PLAYER_WON){
printf("You win!");
numchips += bet_chips;
}
else{
printf("Sorry, you have lost!\n");
numchips -= bet_chips;
}
//If player doesn't have enough chips or money then program will end.
if ( numchips <= 0 && cash <= 0){
printf("You can not play anymore. Not enough chips and cash.\n");
choice = 6;
}
}
choice = menu ();
}
if (choice == 4){
printf("How many chips would you like to bet?\n\n");
scanf("%d", &bet_chips);
//Nullify transaction if no chips are bet.
if ( bet_chips > numchips)
printf("Sorry that is not allowed. No game played.\n\n");
// Else execute transaction.
else {
game = arupsdice();
if ( game == PLAYER_WON){
printf("You win!");
numchips += bet_chips;
}
else{
printf("Sorry, you have lost!\n\n");
numchips -= bet_chips;
}
//If player doesn't have enough chips or money then program will end.
if ( numchips <= 0 && cash <= 0){
printf("You can not play anymore. Not enough chips and cash.\n\n");
choice = 6;
}
}
choice = menu ();
}
if (choice == 5) {
statusreport( numchips, cash);
choice = menu ();
}
}
cash = cash + (numchips * CHIP_SELLING);
printf("After selling your chips, you have $%d. Thanks for playing!\n", cash);
return 0;
} //Ends the main function.
//Pre-conditions: none
//Post-conditions: Main menu will be printed and a valid choice answer
// (1 thru 6) will be returned.
int menu()
{
int answer = 0;
//Menu will loop until valid answer is given.
while ( answer != 1 && answer != 2 && answer != 3 && answer !=4 && answer !=5 && answer !=6)
{
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");
scanf ("%d", &answer);
}
return answer;
}
// Precondition: None.
// Postcondition: Generates two random numbers in between
// one and six inclusive and returns their sum.
int pairofdice(){
//Declare local variables.
int rand1, rand2, sum;
//Start the rolling process of the two dice.
rand1 = 1 + rand ()%6;
rand2 = 1 + rand ()%6;
sum = rand1 + rand2;
return sum;
}
// Precondition: None.
// Postcondition: Plays one game of Craps and returns
// PLAYER_WON if the player won and
// PLAYER_LOST if they lost.
int craps(){
//declare variables
int answer, point, k, PLAYER_WON, PLAYER_LOST;
int temp_roll; //temporary roll that will execute 2nd roll.
//Execute the first roll
printf("Press 'r' and hit enter for your first roll.\n");
scanf("%d", answer);
getchar(); // This will get the user's answer.
point = pairofdice();
if (point == 7 || point == 11){
printf("You rolled %d.\n", point);
return PLAYER_WON;
}
else if (point == 2 || point == 3 || point == 12){
printf("You rolled %d.\n", point);
return PLAYER_LOST;
}
else {
printf("You rolled %d.\n", point);
k = point;
//Execute second roll of dice
printf("Press 'r' and hit enter for your next roll.\n");
scanf("%d", answer);
getchar(); // This will get the user's answer.
temp_roll = pairofdice();
while (temp_roll != k || temp_roll != 7){
temp_roll = pairofdice();
if(temp_roll == k){
printf("You rolled %d.\n", point);
return PLAYER_WON;
}
else if (temp_roll == 7){
printf("You rolled %d.\n", point);
return PLAYER_LOST;
}
}
}
}
// Precondition: None.
// Postcondition: Plays one game of Arup's game of dice and
// returns PLAYER_WON if the player won and
// returns PLAYER+LOST if they lost.
int arupsdice(){
//declare variables
int answer, roll1, k, PLAYER_WON, PLAYER_LOST;
int temp_roll; //temporary roll that will execute 2nd roll.
//Execute the first roll
printf("Press 'r' and hit enter for your first roll.\n");
scanf("%d", answer);
getchar(); // This will get the user's answer.
roll1 = pairofdice();
if (roll1 == 11 || roll1 == 12){
printf("You rolled %d.\n", roll1);
return PLAYER_WON;
}
else if (roll1 == 2){
printf("You rolled %d.\n", roll1);
return PLAYER_LOST;
}
else {
printf("You rolled %d.\n", roll1);
k = roll1;
//Execute second roll of dice
printf("Press 'r' and hit enter for your next roll.\n");
scanf("%d", answer);
getchar(); // This will get the user's answer.
while (temp_roll != k){
temp_roll = pairofdice();
if(temp_roll > k){
printf("You rolled %d.\n", roll1);
return PLAYER_WON;
}
else if (temp_roll <=k){
printf("You rolled %d.\n", roll1);
return PLAYER_LOST;
}
}
}
}
// Precondition: cash is the address of the variable
// storing the amount of money the user
// wants to spend on chips.
// Postcondition: 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 buy_cash, temp_chips;
printf("How much cash do you want to spend for chips?\n");
scanf("%d", &buy_cash);
printf("\n");
//Nullify transaction if the buyer wants to spend more money than allowed.
if( buy_cash > *cash_ptr)
printf("Sorry, you do not have that much money. No chips bought.\n\n");
//Execute transaction.
else{
temp_chips = (buy_cash / CHIP_BUYING);
*cash_ptr -= buy_cash;
}
return temp_chips;
}
// Preconditions: numchips > 0.
// Postconditions: Returns the cash obtained for selling
// numchips number of chips.
int sellchips(int numchips){
int sell_chips; // Amount of chips being sold.
int cashobtained; //Amount of cash obtained after sell of chips.
printf("How many chips do you want to sell?\n");
scanf("%d", &sell_chips);
printf("\n");
//Nullify transaction if user doesn't enters wrong amount of chips.
if ( sell_chips > numchips)
printf("Sorry, you do not have that many chips. No chips sold.\n\n");
//Execute transaction
else
cashobtained= numchips * CHIP_SELLING;
return cashobtained;
}
// Precondition: The first parameter is the number of
// chips the user has, the second is how
// much cash they currently have.
// Postcondition: A report detailing the number of chips
// and the amount of cash the user has is
// printed.
void statusreport(int numchips, int cash){
printf("You currently have $%d left and %d chips.\n", cash, numchips);
}
26 Mar, 2006 - 07:39 PM
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