Pi Java Source Code Problems, need help
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Thread: Pi Java Source Code Problems, need help

  1. #1
    Join Date
    Oct 2013
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    Post Pi Java Source Code Problems, need help

    Hey guys, I'm a student of java currently and am learning to put together a PI code, this is as far as I got and need to modify some things before I complete it, can I get some help on what to do from here, any help appriciated!


    Code:
    import java.util.Scanner;
    import java.text.DecimalFormat;
    public class PiSourceCode
    {
        public static void main (String [] args) 
        {
            Scanner k = new Scanner (System.in);
            // Calculate pi using method number 1
            double pi1;// calculated value of PI method 1
            // Gregory-Leibniz Series calculation
            double t1, t2, t3, t4;
            double sum3, sum4;
            t1 = 4.0/1.0; t2 = 4.0/3.0; t3 = 4.0/5.0; t4 = 4.0/7.0;
            sum3 = t1 - t2 + t3;
            sum4 = t1 - t2 + t3 - t4;
            // calculate the average of the sum of 3 terms and the sum of 4 terms
            pi1 = (sum3 + sum4)/2.0;
            // Place your code to calculate pi1, method 1
            System.out.printf ("Gregory-Leibniz Method\nPI = %17.16f\n", pi1);
            System.out.printf ("System Value\nPI = %17.16f\n",Math.PI);
            //Determine difference between computed PI and system value for PI
            double difference1 = Math.abs(Math.PI-pi1);
            // Determine how accurate the result was
            int count;
            while ((Math.round(difference1)) == 0 && count <16)
            {
                count ++;
                difference1 *= 10;
            }
            System.out.printf ("Gregory-Leibniz is accurate to %d digits\n", count);
            double pi2; //calculated value of pi, method 2
            // Place your code here to calculate pi2 using method 2
            // Based on Nilakantha Series
            t1 = 3.0; t2 = 4.0/(2.0*3.0*4.0); t3 = 4.0/(4.0*5.0*6.0); t4 = 4.0/(6.0*7.0*8.0);
            sum3 = t1 + t2 - t3;
            sum4 = t1 + t2 - t3 + t4;
            pi2 = (sum3+sum4)/2.0;
            System.out.printf ("Nilakantha Series\nPI = %17.16f\n", pi2);
            System.out.printf ("System Value\nPI = %17.16f\n",Math.PI);
            //Determine difference between computed PI and system value for PI
            difference1 = Math.abs(Math.PI-pi2);
            // Difference how accurate the result was
            count = 0;
            while ((Math.round(difference1)) == 0 && count <16)
            {
                count ++;
                difference1 *= 10;
            }
            System.out.printf ("Nilakantha Series is accurate to %d digits\n", count); 
        }
    }
    Last edited by HanneSThEGreaT; November 1st, 2013 at 02:45 AM. Reason: added code tags

  2. #2
    VictorN's Avatar
    VictorN is offline Super Moderator Power Poster
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    Re: Pi Java Source Code Problems, need help

    Quote Originally Posted by ivantomljanovic View Post
    Hey guys, I'm a student of java currently ...
    Then why do you post this question to Visual C++ Programming forum, not to the Java one?
    Besides, you should use Code tags while posting code snippets!
    Victor Nijegorodov

  3. #3
    Join Date
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    Re: Pi Java Source Code Problems, need help

    [ Moved Thread To Java Forum ]

  4. #4
    Join Date
    Jul 2001
    Location
    Sunny South Africa
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    Re: Pi Java Source Code Problems, need help

    Instead of saying you need help on certain things, please let us know where you get errors or strange results, so that it is easier to pinpoint the problem(s)

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