Thread: Stopping while loop if there are insufficient funds.

So basically, when someone's bankroll gets to 0 or below 0, I want the program to end so they cannot play any longer. Here is my current code:

import java.util.*;
public class Craps {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		System.out.println("Want to play Craps? Type yes or no.");
		String answer = scan.next();
		System.out.println("How much is your bankroll?");
		double bankroll = scan.nextDouble();
		while (answer.equalsIgnoreCase("yes")) {
			System.out.println("What is your bet?");
			double betAmount = scan.nextDouble();
			if (checkWin(rollDice()) == true) {
				bankroll = bankroll + betAmount;
				System.out.println("Your current bankroll is $" + bankroll);
			} else {
				bankroll = bankroll - betAmount;
				System.out.println("Your current bankroll is $" + bankroll);
			}
			if (bankroll <=0) {
				answer = "no";
			}
			System.out.println("Play again? Type yes or no: ");
			answer = scan.next();	
		}
	}
	public static double newBank(double betAmount, double bankroll) {
		double newBank = bankroll - betAmount;
		System.out.println(newBank);
		return newBank;
	}
	public static int rollDice() {
		Random randomNum = new Random();
		int x = randomNum.nextInt(6) + 1;
		int y = randomNum.nextInt(6) + 1;
		System.out.println("Dice Rolls: " + x + " and " + y);
		int comeoutRoll = x + y;
		System.out.println("Your dice add up to: " + comeoutRoll);
		return comeoutRoll;
	}
 
	public static boolean checkWin(int comeoutRoll) {
		int firstRoll = comeoutRoll;
		if (firstRoll == 7 | firstRoll == 11) {
			System.out.println("Woah, winner here.");
			return true;
		} if (firstRoll == 2 | firstRoll == 3 | firstRoll == 12) {
			System.out.println("You lost!");
			return false;
		} 
		while (true) {
			int currentRoll = rollDice();
			if (currentRoll == 7) {
				System.out.println("You lost!");
				return false;
			}
			if (currentRoll == firstRoll) {
				System.out.println("They match! You win!");
				return true;
			}
				System.out.println("NOT QUITE - Continue rolling...");
		}
	}
}

Help would be wonderful!

I looked and I don't need the initial yes/no answer, so I got rid of it.

So the goal is to allow them to choose play again as long as they have a positive bankroll, however once their bankroll is less than 0 (i.e. in the negatives) it is no longer an option. I'm not sure where I can put the question to ask yes or no to playing again.

So here is my current code:

import java.util.*;
public class Craps {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String answer = "yes";
		System.out.println("How much is your bankroll?");
		double bankroll = scan.nextDouble();
		while (answer.equalsIgnoreCase("yes") && bankroll > 0) {
			System.out.println("What is your bet?");
			double betAmount = scan.nextDouble();
			if (checkWin(rollDice()) == true) {
				bankroll = bankroll + betAmount;
				System.out.println("Your current bankroll is $" + bankroll);
			} else {
				bankroll = bankroll - betAmount;
				System.out.println("Your current bankroll is $" + bankroll);
			}
			System.out.println("Play again? Type yes or no: ");
			answer = scan.next();	
		}      
	}
	public static double newBank(double betAmount, double bankroll) {
		double newBank = bankroll - betAmount;
		System.out.println(newBank);
		return newBank;
	}
	public static int rollDice() {
		Random randomNum = new Random();
		int x = randomNum.nextInt(6) + 1;
		int y = randomNum.nextInt(6) + 1;
		System.out.println("Dice Rolls: " + x + " and " + y);
		int comeoutRoll = x + y;
		System.out.println("Your dice add up to: " + comeoutRoll);
		return comeoutRoll;
	}
 
	public static boolean checkWin(int comeoutRoll) {
		int firstRoll = comeoutRoll;
		if (firstRoll == 7 | firstRoll == 11) {
			System.out.println("Woah, winner here.");
			return true;
		} if (firstRoll == 2 | firstRoll == 3 | firstRoll == 12) {
			System.out.println("You lost!");
			return false;
		} 
		while (true) {
			int currentRoll = rollDice();
			if (currentRoll == 7) {
				System.out.println("You lost!");
				return false;
			}
			if (currentRoll == firstRoll) {
				System.out.println("They match! You win!");
				return true;
			}
				System.out.println("NOT QUITE - Continue rolling...");
		}
	}
}

I'm just not sure what part of the loop (or if I need another loop) that I should put the question that will allow them to redefine the variable answer and thus either end the game or continue on.

Well that worked and I'm a little embarrassed I missed that! Thanks so much for the help.