////   This file contains the C++ code from Program 2.2 of//   "Data Structures and Algorithms//    with Object-Oriented Design Patterns in C++"//   by Bruno R. Preiss.////   Copyright (c) 1998 by Bruno R. Preiss, P.Eng.  All rights reserved.////   http://www.pads.uwaterloo.ca/Bruno.Preiss/books/opus4/programs/pgm02_02.cpp//int Horner (int a [], unsigned int n, int x){    int result = a [n];    for (int i = n - 1; i >= 0; --i)	result = result * x + a [i];    return result;}