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Thread: calcAverage() not calculating properly

  1. #1
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    Default calcAverage() not calculating properly

    I have a program that takes in 5 test scores, averages them and then assigns a letter grade to the average. I can't seem to get it to calculate properly. Can anyone point me in the right direction?

    Here is the method used for averaging:
        public double calcAverage() 
        {
            //calculate the average testscore
            double average = 0;
     
            for (int i=0; i<nums.length;i++)
            {
                average+=nums[i];
                average/=nums.length;
            }
     
            //return the average score
            return average;
        }

    Here is where I have the button event:
    for(int i=0; i<txtNums.length; i++)
                {
                    scan = new Scanner(txtNums[i].getText());
                    if(scan.hasNextDouble())
                    {
                        nums[i] = scan.nextDouble();
                        output = calcAverage();
                    }
                    else
                    {
                        nums[i] = 0;
                        txtNums[i].setText(" Error ");
                        error = true;
                    }
                }


  2. #2
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: calcAverage() not calculating properly

    How do you calculate the average without a computer?

    I recommend stepping through your program with a debugger, or at least adding some print statements, to figure out exactly where the program's execution differs from what you expect. What is the value of average each iteration of the loop?
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    Default Re: calcAverage() not calculating properly

    I just figured out what my issue was. I am trying to figure out how to mark it as solved.

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    Default Re: calcAverage() not calculating properly

    You should be able to go to edit post (might have to open it in a new tab, that's a known forum bug) and mark it as solved. You might want to make a follow-up reply explaining what it was, that way anybody with similar problems will learn from what you did.
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