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Thread: Help with exercise.

  1. #1
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    Default Help with exercise.

    My code is working. It currently asks the user to enter 10 numbers via a ForLoop. What I cant figure out how to do, is how I would go about adding the number that the user enters first to the second and adding that to the third etc? Any ideas?

    import sun.jvm.hotspot.gc_implementation.parallelScavenge.PSYoungGen;
     
    import java.util.Scanner;
     
    /**
     * Created with IntelliJ IDEA.
     * User: polmcguigan
     * Date: 07/02/2013
     * Time: 12:55
     * UPDATE COMMENT ABOUT PROGRAM HERE
     */
    public class TotalNumbers
    {
       public static void main(String[] args)
       {
          String name;
          final int REPEATUNTIL=10;
          int number,totalnumber, numberentered;
     
          Scanner keyboard = new Scanner(System.in);
     
          System.out.println("What is your name?");
          name=keyboard.nextLine();
     
          System.out.println("Please enter 10 whole numbers.");
          for (int count = 1; count <= REPEATUNTIL; number++)
          {
             System.out.println("Please enter a number ");
             number=keyboard.nextInt();
     
          }
     
     
     
       }//main
    }//class


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Help with exercise.

    how I would go about adding the number
    Define a separate variable to hold the sum of the numbers.
    Add each number that is read to that variable.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Help with exercise.

    You already have a totalnumber variable. Just initialize that to 0 and then each loop add whatever the person entered to that variable.

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    Default Re: Help with exercise.

    Quote Originally Posted by Parranoia View Post
    You already have a totalnumber variable. Just initialize that to 0 and then each loop add whatever the person entered to that variable.
    Would this require another variable? To add what the person entered would it be:
    totalnumber=number+..? Can you tell me what it would be?

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    Super Moderator Norm's Avatar
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    Default Re: Help with exercise.

    There is a shortcut operator (+=) that you can use to add one variable to another:
    theTotal += aDetail;
    instead of
    theTotal = theTotal + aDetail;
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Help with exercise.

    Thank you Norm.

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    Default Re: Help with exercise.

    Quote Originally Posted by javapol View Post
    Thank you Norm.
    Where can I find more of these shortcut operators?

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    Default Re: Help with exercise.

    Look at the tutorials:
    Assignment, Arithmetic, and Unary Operators (The Java™ Tutorials > Learning the Java Language > Language Basics)

    also ask google
    If you don't understand my answer, don't ignore it, ask a question.

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