class SumPractice {
  
  // Returns the sum of the first N odd
  // numbers.
  
  public static int sumOfOdds(int n)
  {
    int odd = 1;
    int sum = 0;
    
    while (n > 0) {
      sum = sum + odd;
      odd = odd + 2;
      n--;
    }
    
    return sum;
  }
  
  public static void main(String[] args)
  {
    int n = 10;
    int sum = sumOfOdds(n);
    
    System.out.println("The sum of the first "
                         + n + " odd numbers is " + sum + ".");
  }
}