Thread: Allowing user to input variable.

Hello, I'm new to programming, and could use a little help with something!

I feel like I'm missing the obvious answer, but I just cant think of it!

I'm trying to allow the user to input 5 variables when the program prompts them, and then these variables will be used later on as the number amount of fabricated items that the user has to use.

For Example:

 

"Hello! Input the number of Arrows you want!"



"=user inputs #="



"You have # arrows! How many arrows would you like to use?"



"user inputs #"

I need the number the user inputted to be a variable, so that the user cant use more of the item than they inputed that they had.

I'm sorry for posting no code, but I don't see how posting it here would help with what I need to know.

Thanks!

There are many ways to skin a cat!

Check out this:
Java Tips - How to read input from console

Otherwise, if you wanted something bigger/permanently store values and go beyond the basics, then I suggest reading a Java programming book or online resources, and generate something amazing.

Hope this helps.

Originally Posted by That1guy

Hello, I'm new to programming, and could use a little help with something!

I feel like I'm missing the obvious answer, but I just cant think of it!

I'm trying to allow the user to input 5 variables when the program prompts them, and then these variables will be used later on as the number amount of fabricated items that the user has to use.

For Example:

 

"Hello! Input the number of Arrows you want!"



"=user inputs #="



"You have # arrows! How many arrows would you like to use?"



"user inputs #"

I need the number the user inputted to be a variable, so that the user cant use more of the item than they inputed that they had.

I'm sorry for posting no code, but I don't see how posting it here would help with what I need to know.

Thanks!

Scanner console = new Scanner(System.in);
int numOfArrows = 0;
int numberOfArrowsToUse = 0;
System.out.println("Hello! Input the number of Arrows you want!");
numOfArrows = console.nextInt();

System.out.println("You have " + numOfArrows + " arrows! How many arrows would you like to use?");
numOfArrowsToUse = console.nextInt();

However, if you're using JOptionPane, then

int numOfArrows = 0;
int numberOfArrowsToUse = 0;
// JOptionPane.showInputDialog( Component parent, String message, Object title, int messageType);
String str = JOptionPane.showInputDialog(null, "Hello! Input the number of arrows you want!", "Input number of arrows", JOptionPane.QUESTION_MESSAGE);
numOfArrows = Integer.parseInt(str);
String str2 = JOptionPane.showInputDialog(null, "You have " + numOfArrows + " arrows! How many arrows would you like to use?", "How many do you want to use?", JOptionPane.QUESTION_MESSAGE);

numberOfArrowsToUse = Integer.parseInt(str2);

Thank you all!

I used the Arrow simulation provided by javapenguin above; and after a little tweaking, got it to run perfectly. I then used that to start working on what I actually have in mind; but when compling it, I keep running into errors; and I cant quite figure out what I have wrong.

import java.util.Scanner;
 
class Cafe
{
	public static void main(String[] args)
	{
		Scanner scan = new Scanner(System.in);
 
		int mealA = 0;
		int mealB = 0;
		int mealC = 0;
		int mealD = 0;
		int mealE = 0;
		int mealtoeat = 0;
 
 
		System.out.println("Please tell me what first food you want to make!");
		foodA = scan.nextLine();
		System.out.println("Please tell me what second food you want to make!");
		foodB = scan.nextLine();
		System.out.println("Please tell me what third food you want to make!");
		foodC = scan.nextLine();
		System.out.println("Please tell me what fourth food you want to make!");
		foodD = scan.nextLine();
		System.out.println("Please tell me what fifth food you want to make!");
		foodE = scan.nextLine();
 
		System.out.println("How many " + foodA + " do you want to make?");
		meal1 = scan.nextInt();
		System.out.println("How many " + foodB + " do you want to make?");
		meal2 = scan.nextInt();
		System.out.println("How many " + foodC + " do you want to make?");
		meal3 = scan.nextInt();
		System.out.println("How many " + foodD + " do you want to make?");
		meal4 = scan.nextInt();
		System.out.println("How many " + foodE + " do you want to make?");
		meal5 = scan.nextInt();
		{
 
			System.out.println(foodA + " " + mealA);
			System.out.println(foodB + " " + mealB);
			System.out.println(foodC + " " + mealC);		
			System.out.println(foodD + " " + mealD);
			System.out.println(foodE + " " + mealE);
 
			System.out.println("What would you like to eat?");
 
			//How do I make sure that the user can only enter one of the foods they chose to make?
 
			System.out.println("You have " + //??? + " of " + //??? + "! How many 
 + //??? + " would you like to eat?");
			mealtoeat = scan.nextInt();
		}
	}
}

I got alot of errors around the "How many ___ do you want to make?" parts of it.

Also, as you can see by my notes left in, I cant quite figure how to make sure that the user can only input the foods they chose to make. If someone could direct me to somplace where I can learn more about that; it would be much appriciated.

Thanks again!