////   This file contains the C++ code from Program 4.2 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/pgm04_02.cpp//template <class T>Array<T>::Array () :    data (new T [0]),    base (0),    length (0)    {}