Lecture Notes on 16 Sep 2011

import java.util.Scanner;

public class Test
{
  public static void main (String[] args)
  {
    
    // Create Scanner object
    Scanner sc = new Scanner (System.in);
    int n;

    // Prompt user to enter positive number
    do
    {
      System.out.print ("Enter positive number: ");
      n = sc.nextInt();
    } while (n < 0);
     
    // Sum the digits of that number
    int sumDigits = 0;
    while (n > 0)
    {
      sumDigits = sumDigits + (n % 10);
      n = n / 10;
    }
    System.out.println (sumDigits);

   // Print the nth term in the Fibonacci series
   if (n == 0)
   {
     System.out.println (0);
   }
   else if (n == 1)
   {
     System.out.println (1);
   }
   else
   {
     int f1 = 0;
     int f2 = 1;
     int f = 0;
     for (int i = 2; i <= n; i++)
     {
       f = f1 + f2;
       f1 = f2;
       f2 = f;
     }
     System.out.println (f);
   }
  }
}