Need urgent help on program...

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ChaoSpectrum

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May 16, 2015
6
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4,510
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I have been looking at this for hours and cannot figure out why it will not show the subtotal. PLEASE HELP:

Code:
import java.io.*;
import java.util.*;

public class CS0401JNRV2 
{
	//Constants For Program--------------
	//GASOLINE CONSTANTS
		static double REGULAR = 3.75,
			          PLUS = 4.00;
	//PROPANE CONSTANTS
		static double WITHEXCHANGE = 20.00,
			          WITHOUTEXCHANGE = 35.00;
	//BURRITO CONSTANTS
		static double FIRSTFIVE = 1.00,
			          NEXTFIVE = 0.90,
			          ADDITIONAL = 0.80;
	//VANTAGE CARD BENEFITS
		static double V_GASDISCOUNT = 0.10,
					  V_PROPANEDISCOUNT = 0.10,
			          V_FIRSTFIVE = 0.90,
			          V_NEXTFIVE = 0.80,
			          V_ADDITIONAL = 0.70;
	//-----------------------------------
	
	public static void main(String[]args)
	{
		Scanner keyboard = new Scanner(System.in);
		
		//Totals For User--------------------
			//GASOLINE INFO
				int typeOfGas = 0;
				double numOfGallons = 0;
			//PROPANE INFO	
				int numOfTanks = 0,
				    numOfReturning = 0;
			//BURRITO INFO
				int numOfBurrito = 0;
		//-----------------------------------
		//General Info-----------------------
		boolean vantageCard = false,
				ifCustomer = false,
				exitCMD = false;
		
		double vantageCardBal = 0;
		
		while (exitCMD == false)
		{
			System.out.println("Welcome to Gas, Gas, and Gas!");
			
			getCustomer(ifCustomer, keyboard);
			getVantageCard(vantageCard, keyboard, vantageCardBal);
			getChoice(keyboard, typeOfGas, numOfGallons, numOfTanks, numOfReturning, numOfBurrito, vantageCard);
		}		
	}
	public static void getCustomer(boolean ifCustomer, Scanner keyboard)
	{
		int userInput;
		
		while (ifCustomer == false)
		{
			System.out.print("Is there a customer in line? (1 = yes, !1 = no) > ");
			userInput = keyboard.nextInt();
			
			if (userInput == 1)
			{
				ifCustomer = true;
			}
			else 
				ifCustomer = false;
		}
	}
	public static void getVantageCard(boolean vantageCard, Scanner keyboard, double vantageCardBal)
	{
		int userInput = 0;
		vantageCardBal = 0;
		
		while (userInput < 1 || userInput > 2)
		{
			System.out.print("Are you a GasVantage card member? (1 = yes, 2 = no) > ");
			userInput = keyboard.nextInt();
		}
		
		if (userInput == 1)
		{
			vantageCard = true;
			System.out.print("Welcome back, GasVantage Customer!" +
							 "\nWhat is your current GasVantage balance? > ");
			vantageCardBal = keyboard.nextDouble();
			
			System.out.print("You will receive: " +
							 "\n\t\t$0.30/gal. reg., $3.70 gal. plus" +
							 "\n\t\t10.0% off your propane tanks" +
							 "\n\t\t$0.10/ea discount on burritos\n");
		}
		else if (userInput == 2)
      {
			vantageCard = false;
      }
	}
   //Asks user what they would like to choose from a selection of, gasoline, propane, checkhout, and 
	public static void getChoice(Scanner keyboard, int typeOfGas, double numOfGallons, int numOfTanks, int numOfReturning, int numOfBurrito, boolean vantageCard)
	{
		int userInput = 1;
		boolean exitLoop = false;
		
		while (exitLoop == false)
		{
			if (vantageCard == true)
			{
				System.out.println("Here are your options:\n" +
						   "\t\t1) Buy Gasoline: $3.45/gal. reg., $3.70/gal. plus\n" +
			               "\t\t2) Buy Propane:\n" +
			               "\t\t\t(with return tank): $18.00/20 lb tank\n" +
			               "\t\t\t(no tank): $31.50/20 lb tank\n" +
			               "\t\t3) Buy Burritos: $0.90/each [with volume discounts]\n" +
			               "\t\t4) Check out\n" +
			               "Note: For options 1-3, selecting more than once will overwrite previous selections");
			}
			else
			{
				System.out.println("Here are your options:\n" +
						   "\t\t1) Buy Gasoline: $3.75/gal. reg., $4.00/gal. plus\n" +
			               "\t\t2) Buy Propane:\n" +
			               "\t\t\t(with return tank): $20.00/20 lb tank\n" +
			               "\t\t\t(no tank): $35.00/20 lb tank\n" +
			               "\t\t3) Buy Burritos: $1.00/each [with volume discounts]\n" +
			               "\t\t4) Check out\n" +
			               "Note: For options 1-3, selecting more than once will overwrite previous selections");
			}
			
			System.out.print("What is your choice? > ");
			userInput = keyboard.nextInt();
			
			if (userInput == 1)
			{
				getGasoline(keyboard, typeOfGas, numOfGallons);
			}
			else if (userInput == 2)
			{
				getPropane(keyboard, numOfTanks, numOfReturning);
			}
			else if (userInput == 3)
			{
				getBurrito(keyboard, numOfBurrito);
			}
			else if (userInput == 4)
			{
				getSubtotal(typeOfGas, numOfGallons, numOfTanks, numOfReturning, numOfBurrito, vantageCard);
				exitLoop = true;
				
			}
		}
	}
   //Asks the user what type of gas they would like and how many gallons of it they want.
	public static void getGasoline(Scanner keyboard, int typeOfGas, double numOfGallons)
	{	
		typeOfGas = 0;
		numOfGallons = 0;
		
		while (typeOfGas < 1 || typeOfGas > 2)
		{
			System.out.print("Do you want: " +
							 "\n\t1) Regular Gasoline" +
							 "\n\t2) Plus Gasoline" +
						     "\n> ");
			typeOfGas = keyboard.nextInt();			
		}
		while (numOfGallons <= 0)
		{
			System.out.println("How many gallons do you want? > ");
			numOfGallons = keyboard.nextDouble();
		}
		
		
	}
   //Asks the user how many propane tanks they would like
	public static void getPropane(Scanner keyboard, int numOfTanks, int numOfReturning)	
	{
		numOfTanks = 0;
		numOfReturning = 0;
		
		while (numOfTanks <= 0)
		{
			System.out.println("How many propane tanks do you want? > ");
			numOfTanks = keyboard.nextInt();
		}
		while (numOfReturning > numOfTanks)
		{
			System.out.println("How many tanks are you returning? (<= " + numOfTanks + ") > ");
			numOfReturning = keyboard.nextInt();
			
			if (numOfReturning < 0)
			{
				System.out.println("Invalid number -- 0 tanks returned");
				numOfTanks = 0;
				numOfReturning = 0;
				break;
			}
		}
	}
   //Asks the user how many burritos the customer would like
	public static void getBurrito(Scanner keyboard, int numOfBurrito)
	{
		while (numOfBurrito <= 0)
		{
			System.out.println("How many burritos do you want? > ");
			numOfBurrito = keyboard.nextInt();
		}
	}
	public static void getSubtotal(int typeOfGas, double numOfGallons, int numOfTanks, int numOfReturning, int numOfBurrito, boolean vantageCard)
	{
		System.out.print("Here is your subtotal:");
		
		//Gas Calculations
		if (vantageCard == true)
		{
			if (typeOfGas == 1)
			{
				System.out.println("Gasoline: " + numOfGallons + " at " + (REGULAR - V_GASDISCOUNT) + " per gallon:\t\t" + (numOfGallons * (REGULAR - V_GASDISCOUNT)));
			}
			else if (typeOfGas == 2)
			{
				System.out.println("Gasoline: " + numOfGallons + " at " + (PLUS - V_GASDISCOUNT) + "per gallon:\t\t" + (numOfGallons * (PLUS - V_GASDISCOUNT)));
			}
		}
		else if (vantageCard == false)
		{
			if (typeOfGas == 1)
			{
				
			}
			else if (typeOfGas == 2)
			{
				
			}
		}
			
	}
}
 
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