help in calculating the value of pi up to 1000 terms

[M8l]

hi people ,

I can't find what's going wrong with my code here ; it should works this way when the user enter any multiple term of 100 up to 1000 the output should be the value of pi up to that term ; but the problem is when the user enter 200 it outputs 2 values of 200 instead of one and the same when the user enter 300 , it outputs 3 values !

here is the question and my code ;

The value for π can be calculated from the infinite series: π=4-4/3+4/5-4/7+4/9-4/11+ ⋯ Write a program that prints the approximate value of π after 10000 terms of this series. Your program should also display a table that shows the value of π after terms that are multiples of 100, i.e., it should show π values at 100, 200, 300, …, 10000 terms.

package idk;
import java.util.Scanner;

public class pi {
public static void main (String[]args){
    Scanner kb = new Scanner (System.in);
    double sum = 0;
    System.out.print(" Enter one multiple of 100 up to 1000 ");
    int r = kb.nextInt();
    for (int i=1 ; i<=r ; i++){
        double piformula = Math.pow(-1,i+1 )*4/(2*i-1) ;
        sum+=piformula ;

        if(i%100==0)

            System.out.println("the value of pi after " + r + " terms is " + sum);

}
}

}

[M8l]

I'm sorry , I know there are many language mistakes , and I don't know if this is the right place to post my issue

[kenneth1974]

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-----Original Message----- From: "M8l" notifications@github.com Sent: ‎10/‎31/‎2016 12:40 To: "zeit/next.js" next.js@noreply.github.com Subject: Re: [zeit/next.js] help in calculating the value of pi up to 1000terms (#170)

I'm sorry , I know there are many language mistakes , and I don't know if this is the right place to post my issue — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or mute the thread.