/* The following code example is taken from the book * "C++ Templates - The Complete Guide" * by David Vandevoorde and Nicolai M. Josuttis, Addison-Wesley, 2002 * * (C) Copyright David Vandevoorde and Nicolai M. Josuttis 2002. * Permission to copy, use, modify, sell and distribute this software * is granted provided this copyright notice appears in all copies. * This software is provided "as is" without express or implied * warranty, and with no claim as to its suitability for any purpose. */#include "objectcounter.hpp"#include <iostream>template <typename CharT>class MyString : public ObjectCounter<MyString<CharT> > {  //...};int main(){    MyString<char> s1, s2;    MyString<wchar_t> ws;    std::cout << "number of MyString<char>:    "               << MyString<char>::live() << std::endl;    std::cout << "number of MyString<wchar_t>: "               << ws.live() << std::endl;}