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Thread: Java loop help

  1. #1
    Junior Member
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    Default Java loop help

    Hi I need help with this java code, I need the program to run until user enters -1 instead of 0 or 1

    [code]
    public static void main(String args[])
    {
    Scanner input = new Scanner(System.in); //New scanner for input

    System.out.println("Ange längde på de 2 lika långa sidorna (Avsluta med -1)");
    int length = input.nextInt(); //variable length with the users input

    System.out.println("Ska de räta vinkeln vara nedåt (0) eller uppåt (1)");
    int side = input.nextInt();


    if(side == 0) // if user enter 0 this loop is running
    for(int i = 1; i<=length; i++)

    {
    for(int j = 1; j<=i; j++){
    System.out.print("*");

    }
    System.out.println();
    }


    if(side == 1) // if user enter 1 this loop is running
    for(int i = length; i>=0; i--)
    {
    for(int j = 0; j<i; j++){
    System.out.print("*"); // prints * on the same line depends on loop

    }
    System.out.println(); // new line
    }

    }// end main

    [code]


  2. #2
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: Java loop help

    Sounds like a job for a while loop or a do-while loop to me.
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  3. #3
    Junior Member
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    Default Re: Java loop help

    do {

    // Code

    // if (input == 1)
    // end = true;

    }
    while (!end);

    Very simple do while loop, use it to achieve your desired result.

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