asked on

Enter and store multiple String Value

Hello

I am a Java beginner and I working on a problem as follows. (Note: I haven't begun to learn Arrays yet)

I need the user to enter n values for their main course order.

i.e if there a 4 in the dinner party I need to be able to enter and save4 different main course values

Would a Do While Loop achieve this? I am been trying this out for a while now. I will post the awful code I have created so far and keep trying and hope someone sees this post

//Each main course costs €22.00,

import java.util.Scanner;

public class DinnerParty
{
	public static void main (String [] args)
	{
	//print out the menu
	System.out.println ("1. Turkey and Ham \n2. Steak (€5 supplement)\n3. Nut roast (vegetarian €3 discount)\n4. Lasagne");
	
	System.out.println();//new line
	
	int partyNum;
	int mainCourse;
	String courseName1 = "Turkey and Ham"; 
	String courseName2 = "Steak"; 
	String courseName3 = "Nut Roast"; 
	String courseName4 = "Lasagne"; 
	
	Scanner kb = new Scanner(System.in);
	//get the user to enter the number of people in their party (Scanner class)
	System.out.println ("Please enter the number of people in your party");
	partyNum = kb.nextInt();
	
	//display number in party
	System.out.println("The number in your party is " + partyNum);
	
	System.out.println();//new line
	
	do{
		// read in each members main course choice 
		System.out.println ("Please enter each of your party's main course choice");
		mainCourse = kb.nextInt();

		System.out.println("You have chosen maincourse " + mainCourse);
	} while (mainCourse < partyNum);
	
	
	
	//Count and display the number of each main course chosen
	
	// display the total cost of the booking
	}
}

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kaufmed

The code isn't that bad. Your loop is structured well, but think about this: What does the condition:

while (mainCourse < partyNum);

actually mean? What does mainCourse represent? Evaluate that, and I think you'll understand why the condition doesn't quite make sense.

Kevin_Coors

ASKER

Hi Kaufmed

Thanks for you help.

mainCourse did not make sense because of the 4 menu options

I changed the variable to int choice;

I can now run the program and enter each users mainCourse choice. How do I store all these values to memory using the variable choice, without using an array? I am a 1st year student and we have not covered arrays yet. New code below

import java.util.Scanner;

public class DinnerParty
{
	public static void main (String [] args)
	{
	//print out the menu
	System.out.println ("1. Turkey and Ham \n2. Steak (€5 supplement)\n3. Nut roast (vegetarian €3 discount)\n4. Lasagne");
	
	System.out.println();//new line
	
	int partyNum;
	int mainCourse;
	int choice;
		
	Scanner kb = new Scanner(System.in);
	//get the user to enter the number of people in their party (Scanner class)
	System.out.println ("Please enter the number of people in your party");
	partyNum = kb.nextInt();
	
	//display number in party
	System.out.println("The number in your party is " + partyNum);
	
	System.out.println();//new line
	
	do{
		// read in each members main course choice 
		System.out.println ("Please enter each of your party's main course choice");
		choice = kb.nextInt();

		System.out.println("You have chosen maincourse " + choice);
	} while (choice < partyNum);
	
	 //Count and display the number of each main course chosen
	
	// display the total cost of the booking
	}
}

Open in new window

kaufmed

Well, again you have something that doesn't quite make sense. Think about the condition in words:

While the user's choice is less than the number of people in the party, do something.

Why would you be comparing the choice of entree to the number of people at the table?

Kevin_Coors

ASKER

I was thinking along the lines of

There are 4 people for dinner stored in variable partyNum

If the choices are less than the partyNum then the loop will exit after it reached the number in the party?

kaufmed

If the choices are less than the partyNum then the loop will exit after it reached the number in the party?

But you need to compare the number of choices, not the actual choice itself. You need another variable to track how many people have given you their choice.

Kevin_Coors

ASKER

Thanks

Sorry but I cannot figure this out a present. I will come back to it. spent too much time on it already

Kevin_Coors

ASKER

Hi Kaufmed

I have 6 of these do while loop questions to answer and If I get one the rest should be fine.

Would it be possible to give me a kick start. Literally

I have been down with a bad flu for 10 the last 8 days and I'm cannot get my brain to work.

I know I can do this . I seem to be struggling with storing the values of multiple people

ASKER CERTIFIED SOLUTION

kaufmed

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Kevin_Coors

ASKER

Thanks Kaufmed. I really appreciate all your help thus far.

Kevin_Coors

ASKER

Still lost but I'll give you the points.

Thanks a milllion for your assistance

EE have bummed me out for the last time.

Gonna try elsewhere.

kaufmed

I am happy to keep going with the explanation(s) should you decide to go further with this. You just need to ask specific questions about what you don't understand = )

Kevin_Coors

ASKER

Ah Thanks. I think I have it actually. Sorry about throwing my soother out of the pram but It's just very frustrating. I prob need a break

Is this any closer?

import java.util.Scanner;

public class DinnerParty
{
	public static void main (String [] args)
	{
		//print out the menu
		System.out.println ("1. Turkey and Ham \n2. Steak (€5 supplement)\n3. Nut roast (vegetarian €3 discount)\n4. Lasagne");
		
		System.out.println();//new line
		
		int partyNum;
		int choice;
		int order;
		int count = 0;
		int total = 0;
		double mainCourse;
		int i = 0;
			
		Scanner kb = new Scanner(System.in);
		//get the user to enter the number of people in their party (Scanner class)
		System.out.println ("Please enter the number of people in your party");
		partyNum = kb.nextInt();
		
		//display number in party
		System.out.println("The number in your party is " + partyNum);
		
		// Read each member of the partys main course
				
		System.out.println();//new line
		
		System.out.println ("Please enter the order for each of your party");
		
		for(i = 1; i <= partyNum; i++)
		{
			choice = kb.nextInt();
			
			System.out.println("Person " + i + " will have maincourse no: " +choice);
			count++;
		}
		
		if (i == 1)
		{
			mainCourse = 22.00;
	   }
		else if (i == 2)
		{
			mainCourse = 27.00;
		}
		else if (i == 3)
		{
		   mainCourse = 19.00;
		}
		else
			mainCourse = 22.00;
		 
		 //Count and display the number of each main course chosen
		 System.out.println("The total orders are " + count);
		 
		// display the total cost of the booking
		
	;
		System.out.println("The total cost of all " + count + " orders is " + total);

	}
}

Open in new window

/*do{
            // read in each members main course choice
            System.out.println ("Please enter each of your party's main course choice");
            choice = kb.nextInt();


            System.out.println("You have chosen maincourse " + choice);
      } while (choice < partyNum);*/

kaufmed

for(i = 1; i <= partyNum; i++)
{
      choice = kb.nextInt();

      System.out.println("Person " + i + " will have maincourse no: " +choice);
      count++;
}

Excellent! I figured you wanted to stick with your do/while, but a for loop is a nice way to go as well.

Kevin_Coors

ASKER

thanks a lot kaufmed