public class Sum_while
{
  public static void main(String args[])
  {

    TokenReader in = new TokenReader(System.in);


    int    count = 1;
    int    stop  = 0;
    double sum   = 0;
    double temp  = 0;    


    System.out.print("How many numbers do you wish to enter? ");
    System.out.flush();
    stop = in.readInt();


    while(count <= stop) {
      System.out.print("Enter data #" + count + ": ");
      System.out.flush();
      temp = in.readDouble();
      sum = temp + sum;
      ++count;
    }
    

    System.out.println();
    System.out.println("Final sum: " + sum);
    // System.out.println(count);
  }
}