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Thread: Help with Average and Variables Please =)

  1. #1
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    Default Help with Average and Variables Please =)

    I wanna add:
    system print of the average of all the scores that were entered.
    and a system print of the maximum of all the scores that were entered.

    Can anyone help me and add that in there? ive been trying for hours, even bought a java book. couldnt figure it out haha. And if they could explain what you did thanks!


    public static void main(String[] args) {
            // TODO code application logic here
         String fName = null;
         int count = 0; 
     
     
     
     
    Scanner scan = new Scanner(System.in);
     
    while ( fName != "stop" ) {
    System.out.println("Enter the user's score from 0 to 100 ");
    System.out.println("....or you can always enter STOP to quit the app.");
    System.out.println("So far you have entered only " + count + " grades.");
    System.out.print("\nINPUT: ");
    int score = scan.nextInt();
     
    count++;
     
    if (score >= 101) {
    System.out.println("Too high!");
     
    else
     
     
    switch(score / 10)
      {
      case 10:
      case 9: System.out.println("Letter grade is A\n");
      break;
      case 8: System.out.println("Letter grade is B\n");
      break;
      case 7: System.out.println("Letter grade is C\n");
      break;
      case 6: System.out.println("Letter grade is D\n");
      break;
      default: System.out.println("Letter grade is F\n");
    }
        }
      }
    }
    Last edited by Raymond Pittman; October 8th, 2011 at 07:45 PM.


  2. #2
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    Default Re: Help with Average and Variables Please =)

    If you want to figure out the average. First know the formula.. Surely you know this (sum of values / # of values).. I'm sure you can go from there.. (if you wrote this code on your own)

    G'luck, comment back if you have any questions.
    Simplicity calls for Complexity. Think about it.

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    Default Re: Help with Average and Variables Please =)

    Well, yes i believe its something like

     
    int average = (count / scores)

    but i couldnt remember where to put it, also i couldn't remember how to display max score =S

    help please. i tried for hours haha. my minds been blank but yes i did write this

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    Default Re: Help with Average and Variables Please =)

    Well, you have the variables switched around.. It would be this
    int average = scoreSum/count
    In order to get the Sum of the Scores, you have to add them to a variable each time you get a score in.
    So basically, here's the logic:
    I have a count variable of length (let's make something up) 5.
    Therefore, I must have 5 scores.
    If I want to get the average, I must find the sum of the scores.
    The score variable changes every time I run my loop, so simply multiplying the score by 5 at the end won't work.
    So in all, I must find a way that I can add each individual score to "something" 5 times... You can go from here, it's best to learn from Trial & Error



    And if you want to display the maximum grade, you have to have a variable that changes every time a higher number comes..
    This concept is a little harder, but first, try to get the Average section working.
    Simplicity calls for Complexity. Think about it.

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