////   This file contains the C++ code from Program 7.13 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/pgm07_13.cpp//void ListAsLinkedList::Withdraw (Object& object){    if (count == 0)	throw domain_error ("list is empty");    linkedList.Extract (&object);    --count;}