melodia

Hi,

I'm writing a program for blackjack and am using an array with and index of 53 the first 52 spaces are for the cards and the 53rd is for keeping track of how many cards are left in the "deck".
I have two function prototypes one is to "Initialize_Deck" (initialize the array) and another is to "Shuffle_Deck". I want the program to do these two functions as soon as the player decides that yes they want to play the game. How can I do this by calling the functions in the beginning of the main?? Is this possible?

melodia

/* function prototypes */
void clean (void);
char GetTestChoice();
void Initialize_Deck(int deck[]);
int Random_Number();
void Shuffle_Deck(int deck[]);
int Draw_One_Card(int deck[]);
void Display_Card(int card);
int Score_Card(int card);
int Users_Turn(int deck[]);
int Continue();
#define QUIT 'Q'
#define PLAY_GAME 'P'



#define DECK_SIZE 53
int deck[DECK_SIZE];
/************************************************** *******************

************************************************** *******************/

int main()
{

int choice;

printf(" Welcome! I'm happy to have someone to play blackjack with!\n\n");

do
{
choice = GetTestChoice();

switch (choice)
{
case PLAY_GAME:

Initialize_Deck(int deck[]);
Shuffle_Deck(int deck[]);

Users_Turn(int deck[]);


break;



default:
if (choice != QUIT)
printf("\n That is NOT a valid choice. Please try again...\n");
break;

} /* end switch */

} while (choice != QUIT);
printf("Finishing the program.\n");
system("PAUSE");
return 0;

}

void clean (void)
{
char dummy;
do
{
scanf("%c",&dummy); /* read a single char */
} while(dummy != '\n'); /* if it was the NEWLINE we are done */
}



char GetTestChoice()
{
char choice;

printf("\n\n Would you like to continue?\n");

printf("%c: Quit the game.\n", QUIT);
printf("%c: Play the game", PLAY_GAME);

scanf("%c", &choice);
clean(); /* empty the input buffer */
printf("\n\n");

return choice;
}

void Initialize_Deck(int deck[])
{
int i;
for (i=0; i < DECK_SIZE; i++)
{
deck[i]=i;
}
}


void Shuffle_Deck(int deck[])
{
int i;
int num;
int temp;

for (i=51; i > 0; i--)
{
num=Random_Number(i);
temp=deck[num];
deck[num]=deck[i];
deck[i]=temp;
}
}
int Users_Turn(int deck[])
{
int card;
int totalscore=0;
int score;
int choice;
do
{
choice=Continue();
while(totalscore < 21 && choice == 1)
{
do
{
card=Draw_One_Card(deck);
Display_Card(card);
score=Score_Card(card);
totalscore=totalscore+score;
printf("Your total score so far in this hand is: %i", totalscore);
}
}

}




int Random_Number(int upper)
{
return rand()%(upper+1);
}

int Draw_One_Card(int deck[])
{
if (deck[52]==0)
{
Shuffle_Deck(deck);
}
deck[52]--;

return (deck[deck[52]]);
}

void Display_Card(int card)
{

int suit = card/13;
int rank = card%13;
rank=rank+1;

switch(rank)
{
case 1:
printf("A");
break;

etc.....
}

switch(suit)
{
case 0:
printf("S");
break;
case 1:
printf("H");
break;
case 2:
printf("D");
break;
case 3:
printf("C");
break;
}
}
int Score_Card(int card)
{
int rank;
rank=card%13 + 1;

switch(rank)
{
case 1:
return rank;
break;

etc......
}


int Continue()
{
int choice;
printf("Would you like to draw a card?\n Enter 1 to draw:\n Enter 2 to not draw:\n");
scanf("%i", &choice);
clean();
return choice;
}

melodia

The only errors I am getting when compiling are in this function:
The compiler says " syntax error before '}' token"
which is the bracket following the while statement.

as well as syntax errors "before int" in all of the three function 'calls' in the beginning of the program where:

Initialize_Deck, Shuffle_Deck, and User_Turn being called in the switch statements.

Sorry for the multiple posts. I messed up and didn't want to leave it confusing. I've been working on this for the last week and a half morning noon and night. I thought a different prospective might help solve this...

Thanks again,

-Melodia

King Mir

The while loop error is because you can't seem to decide if you want a while loop or do while loop. If do while, you're missing a semicolon at the end. if while, then you need to get rid of the do.

The other errors are because the correct way to call those functions is simply "Initialize_Deck(deck);".

__________________
It is too clear and so it is hard to see.
A dunce once searched for fire with a lighted lantern.
Had he known what fire was,
He could have cooked his rice much sooner.

melodia

Thank you for the reply, I managed to fix the while loop at the top but now the ridiculous thing has a problem with the switch statement for "scoring the card"
I was under the impression that you could use this method of obtaining a return value through switch statements. However, the compiler says that "control reaches end of nonvoid function"

??????

is what this function says to do not allowed?Or am I missing some silly small thing??

King Mir

That should be a warning, not an error.

The problem is that if card is not 1 though 13, then it doesn't know what to do. You can fix the warning by adding some kind of default behavior.

Also, instead of having a much of cases that repeat the same code you can do this:

__________________
It is too clear and so it is hard to see.
A dunce once searched for fire with a lighted lantern.
Had he known what fire was,
He could have cooked his rice much sooner.