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POMath line only running once in a loop
 

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    <p>this is my first interaction with this site, I have heard good things and I hope I can find the answer that I am looking for. I am learning Java and using the Eclipse IDE in a computer science class at my high school and I came across a problem that neither my teacher or I can solve. Here are the instructions.</p> <blockquote> <p>"The German Mathematician GottfriedLeibniz developed the follow method to approximate the value of π.</p> <p>π/4 = 1 - 1/3 + 1/5 - 1/7 + ...</p> <p>Write a program that allows the user to specify the number if iterations used in this approximation and displays the resulting value."</p> </blockquote> <p>Now the code.</p> <pre><code>import java.util.Scanner; public class GottfriedLeibnizPi { public static void main(String[] args) { Scanner reader = new Scanner(System.in); System.out.print("Enter how many iterations you want to go to: "); int iterations = reader.nextInt(); double pi = 0; if (iterations &gt;= 0) { for (int count = 0; count &lt;= iterations - 1; count++) { System.out.println("pi: " + pi + " count: " + count); //debug statement to show pi and count before running the code if (count % 2 == 0) { pi = pi + (1 / (1 + (2 * count))); // first to run. starts at pi + 1 and every other loop adds 1/(1+2n) } else { pi = pi - (1 / (1 + (2 * count))); // first to run. starts at pi - 1/3 and every other loop subtracts 1/(1+2n) } System.out.println("pi: " + pi + " count: " + count + "\n"); //debug statement to show pi and count after running the code } pi = pi * 4; //obtains the true value of pi System.out.println("The value of pi after " + iterations + " iterations is " + pi); } else { System.out.println("Please enter a non-negative number"); } } } </code></pre> <p>Here is the output with the the debugging statements if I enter five at the prompt.</p> <pre> Enter how many iterations you want to go to: 5 pi: 0.0 count: 0 pi: 1.0 count: 0 pi: 1.0 count: 1 pi: 1.0 count: 1 pi: 1.0 count: 2 pi: 1.0 count: 2 pi: 1.0 count: 3 pi: 1.0 count: 3 pi: 1.0 count: 4 pi: 1.0 count: 4 </pre> <p>The value of pi after 5 iterations is 4.0</p> <p>My math says that answer should be 3.3396... but the math in my loop does not appear to run more than once. I have not found anything on here that is close to my problem, does anyone know what is wrong?</p>
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