Thread: Some errors and warnings i dont understand

Ok ive tried to create a simple craps game, yet there are some errors and warnings i cant figure out.

Code:

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


int money=200;

void menu();
void rules();
initbet();
roll();
secbet();
char secroll(int);

void main()
{
	srand((int)time(NULL));

	printf("---------------------------\n");
	printf("WELCOME TO THE CRAPS TABLE\n");
	printf("---------------------------\n");

	menu();
}

void menu()
{
	int bet;
	int backbet;
	int point;
	int gain;
	char choose;
	char win;

	do
	{
		printf("Would you like to see the rules? y/n.\n\n");
		fflush(stdin);
		scanf("%c\n",&choose);
	}
	while(choose!='y' && choose!='n');
	if(choose=='y')
		rules();

	while(1)
	{
		bet = initbet();
		point = roll();
		
		switch(point)
		{
		case 7:
		case 11:
			printf("Congrats! You've won %i!\n",bet);
			money+=bet;
			point=1;
			break;
		case 2:
		case 3:
		case 12:
			printf("Sorry, you lose %i!\n\n",bet);
			money-=bet;
			point=1;
			break;
		default:
			break;
		}

		if(money<= 0)
		{
			printf("Sorry you lost,but now you have no money! Goodbye.\n\n");
			break;
		}
		if(point==1)
		{
			do
			{
				printf("Would you like to play again?y/n.\n");
				fflush(stdin);
				scanf("%c\n",&choose);
			}
			while(choose != 'y' && choose != 'n');

			if(choose=='y')
				continue;
			else if(choose=='n')
				break;
		}

		printf("Your point roll is %i\n\n",point);

		backbet = secbet(bet);

		win = secroll(point);

		if(win==0)
		{
			printf("Seven! Sorry, you lost $%i.\n\n",bet+backbet);
			money=money-(bet+backbet);
			
			if(money<=0)
			{
				printf("Sorry you dont have the bills\n\n");
				break;
			}

			if(point=1)
			{
				do
				{
					printf("Do you want to play again? y/n\n");
					fflush(stdin);
					scanf("%c\n",&choose);
				}
				while(choose != 'y' && choose != 'n');
				if(choose=='y')
					continue;
				else if(choose=='n')
					break;
			}
		}
		else
		{
			printf("Congrats! You Win!\n");
			switch(point)
			{
			case 6:
			case 8:
				gain=(int) (bet+(1.2*backbet));
				printf("Here is a 6:5 pay! Thats $%i!\n\n",gain);
				money+=gain;
				break;
			case 5:
			case 9:
				gain=(int) (bet+(1.5*backbet));
				printf("Here is a 3:2 pay! Thats $%i!\n\n",gain);
				money+=gain;
				break;
			case 4:
			case 10:
				gain=(int) (bet+(2*backbet));
				printf("Here is a 2:1 pay! Thats $%i!\n\n",gain);
				money+=gain;
				break;
			default:
				printf("If this appears dana, youre screwed");
				break;
			}

			do
			{
				printf("Do you want to play again? y/n.\n");
				fflush(stdin);
				scanf("%c\n",&choose);
			}
			while(choose!='y' && choose!='n');
			if(choose=='y')
				continue;
			if(choose=='n')
				break;
		}
}



void rules();
{
	printf("rules\n");
}



initbet()
{
	int bet;

	printf("\nYou have $%i.\n",money);
	printf("Place your bet between 0 and 200 dollars\n");

	fflush(stdin);
	scanf("%i\n",&bet);

	while(bet > money || bet < 0)
	{
		if(bet>money)
			printf("Get outta here...you only have $%i! Bet again please\n",money);
		else
			printf("Bet again...loser");

		fflush(stdin);
		scanf("%i\n",&bet);

		if(bet==0)
			printf("You wimp...you bet nothing, but youre special, you can still play!\n");
		else if(bet==money)
			printf("Goin for it eh?Good luck, youll need it!\n");	
	}

}



roll();
{
	int die1;
	int die2;
	int sum;

	die1=rand()%6+1;
	die2=rand()%6+1;
	sum=die1+die2;

	printf("\nRolling in progress...\nyou rolled a %i\n",sum);
	return sum;
}

secbet(int bet);                                                 /*3*/
{
	int backbet;
	int high;

	high= 2*bet;
	if((money-bet) < high)
		high = (money-bet);
	printf("Place your backbet...\nIf you do not wish to make a backbet,enter 0\n");
	printf("You can bet up to %i\n",high);

	fflush(stdin);
	scanf("%i\n",&backbet);

	while(backbet>high || backbet<0)
	{
		if(backbet>high)
			printf("No more than %i dollars please\n",high);
		else
			printf("Please type a valid bet\n");

		fflush(stdin);
		scanf("%i\n",&backbet);
	}
		return backbet;
	
}

char secroll(int point,int sum)                  /*2*/
{
	int sum;
	char win;
	do
	{
		sum = roll();             /*1*/
	}
	while(sum!=point && sum!=7);

	if(sum==point)
		win = 1;
	else
		win = 0;
	return win;


}

ok it is saying a bunch of stuff: (look above to see where it is)
1. error C2065: 'sum' : undeclared identifier
I dont understand cause i just declared it.
2.error C2143: syntax error : missing ';' before 'type'
It says this in numerous places and i dont understand why...
3.error C2059: syntax error : ')'

If anyone could fix or help me understand my errors, I would appreciate it a lot. Or if you see anything else that is sketchy. Thanks!

1) In secroll(), it is not good to declare int sum while your input is called sum as well.

2) I am not sure if you can declare variable before the funciton prototypes.

3) missing; - usually when you miss a single ; or put wrong braces in one place, you will get lots of errors.

Hope this helps

ok thank you

ok on to question two

Code:

initbet(int money)
{
	int bet;

	printf("\nYou have $%i.\n",money);
	printf("Place your bet\n");
	fflush(stdin);
	scanf("%i\n",&bet);

	
	do
	{
		initbet(money);
	}
	while(bet > money || bet < 0);

	do
	{
		roll(bet);
	}
	while(bet>=0 && bet<=money);
}

whenever I run the program i insert my bet into a scanf yet when i press enter nothing happens. I have to press another key to make the rest of the program to happen. What is happening? did I do something wrong with my scanf? Thanks in advance

Originally posted by lakai02

Code:

	scanf("%i\n",&bet);

whenever I run the program i insert my bet into a scanf yet when i press enter nothing happens. I have to press another key to make the rest of the program to happen. What is happening? did I do something wrong with my scanf? Thanks in advance

See Question 12.17.