Lab2-Pi

JLab>javac Pi.java
JLab>
JLab>java Selftest 

JLab> testPi 	: ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok  (10.0/10.0)
JLab> : -----------------------------
JLab> : คุณได้ 10.0 คะแนน (เต็ม 10.0)
JLab> : -----------------------------
JLab> :<POINT>10.0</POINT> (<TOTAL>10.0</TOTAL> )
JLab>

import java.util.Scanner;

public class Pi {
  // pi1 = 4*(1 - 1/3 + 1/5 - 1/7 + 1/9 - 1/11 + ...)
  // pi2 = 4*(2/3 * 4/3 * 4/5 * 6/5 * 6/7 * 8/7 * ...)
  public static void main(String[] args) {
    Scanner kb = new Scanner(System.in);
    System.out.print("k = ");
    int k = kb.nextInt();

    double pi1 = 0, pi2 = 1;
    for (int m = 1; m <= k; m++) {
      pi1 = pi1 + Math.pow(-1, m - 1) / (2 * m - 1);
      pi2 = pi2 * Math.pow((m + 1.0) / (m + 2.0), Math.pow(-1, m + 1));
    }
    pi1 = pi1 * 4;
    pi2 = pi2 * 4;


    System.out.println("Pi = " + pi1);  // แสดงผลของสูตรแรก
    System.out.println("Pi = " + pi2);  // แสดงผลของสูตรที่สอง
  }

}

SM=0, CM=7, ST=7, KY=304, TR=00:00
ERR = 00:00 1046,;
ERR = 00:00 ;
ERR = 00:00 ;
ERR = 00:00 ;
ERR = 00:00 ;
ERR = 00:00 ;
ERR = 00:00 ;