/* Listing1804.java */

import java.io.*;

public class Listing1804
{
  public static void main(String[] args)
  {
    PrintWriter f;
    double sum = 0.0;
    int nenner;

    try {
      f = new PrintWriter(
          new BufferedWriter(
          new FileWriter("zwei.txt")));

      for (nenner = 1; nenner <= 1024; nenner *= 2) {
        sum += 1.0 / nenner;
        f.print("Summand: 1/");
        f.print(nenner);
        f.print("   Summe: ");
        f.println(sum);
      }
      f.close();
    } catch (IOException e) {
      System.out.println("Fehler beim Erstellen der Datei");
    }
  }
}