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Thread: help with code

  1. #1
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    Default help with code

    I have this school assignment and I just about got it but for some reason I cannot get the continue to let me continue after I click y.

    import java.util.Scanner;

    public class Project4 {

    /**
    *
    * @param args
    */
    public static void main(String[] args) {

    //Welcome user to the program
    System.out.println ("Welcome to the factorial calculator");

    int z;
    double b= 1;
    Scanner sc=new Scanner(System.in);

    String choice = ("y");

    // Get the integer
    System.out.print("Enter an integer that's greater than 0 but less than 9: ");
    z=sc.nextInt();

    // Calculate the factorial

    System.out.println("The factorial is: " +z+ ":");
    for (int i=1 ; i<=z; i++){
    b=b*i;
    }
    System.out.println(b);

    //See if the user wants to continue
    System.out.print("Continue? (y/n): ");
    choice = sc.next();
    System.out.println();

    }
    }


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: help with code

    Please Edit your post and wrap your code with[code=java]<YOUR CODE HERE>[/code] to get highlighting. Your unformated code is hard to read and understand.

    Where in your code do you test the value of what is read into the choice variable?
    What does it mean for the code to "continue"?

  3. #3
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    Default Re: help with code

    I don't know how to wrap my code. and about the continue after I get my factorial for the number I put in, i need it to ask me to continue so I can put a new number in to get the factorial of a new number.

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: help with code

    I don't know how to wrap my code.
    wrap your code with
    [code=java] <<<< Put this before
    <YOUR CODE HERE>
    [/code] <<< put this after

    , i need it to ask me to continue
    What does this code do?
      System.out.print("Continue? (y/n): ");
      choice = sc.next();

  5. #5
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    Default Re: help with code

    import java.util.Scanner;
     
    public class Project4 {
     
    	/**
    	 * 
    	 * @param args
    	 */
    public static void main(String[] args) {
     
    //Welcome user to the program
    	System.out.println ("Welcome to the factorial calculator");
     
    int z;
    double b= 1;
    Scanner sc=new Scanner(System.in);
     
    String choice = ("y");
     
    // Get the integer
    System.out.print("Enter an integer that's greater than 0 but less than 9: ");
    z=sc.nextInt();
     
    // Calculate the factorial
     
    System.out.println("The factorial is: " +z+ ":");
    for (int i=1 ; i<=z; i++){
    b=b*i;
    }
    System.out.println(b);
     
    //See if the user wants to continue
    System.out.print("Continue? (y/n): ");
    choice = sc.next();
    System.out.println();
     
         }
    }

  6. #6
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    Default Re: help with code

    This should help: while loops allow you to continually iterate through code when a given condition is true. What this means is that if you wrap the factorial part of your code in a while loop, you can have that section of code repeat while a condition is true (so, while your choice variable equals "y").
    Use highlight tags to help others help you!

    [highlight=Java]Your prettily formatted code goes here[/highlight]

    Using these tags makes your code formatted, and helps everyone answer your questions more easily!




    Wanna hear something funny?

    Me too.

  7. #7
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    Default Re: help with code

    Can you please give me a tip on how to add it to the program without changing anything but for it to let me continue. I tried to add a while loop and it just puts all the factorials at once and that wont work for my teacher.

  8. #8
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    Default Re: help with code

    You need to put the while loop around the code that does the fact computation and where you ask the user if he wants to continue. Put the question and the reading of the response inside the loop.
    Exit the loop if the user does not want to stay in the loop.
    For example:
    while(user wants to continue)
    get number
    do computation
    show result
    ask user if he wants to continue
    get user's response
    end loop

  9. #9
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    Default Re: help with code

    thank you so very much I was able to do it.

  10. #10
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    Default Re: help with code

    Glad you got it working.

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