/* 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 "stdobjpolicy.hpp"#include "stdarraypolicy.hpp"#include "simplerefcount.hpp"#include "countingptr.hpp"#include <iostream>#include <vector>void test1();void test2();int main(){    test1();    test2();}void test1(){    std::cout << "\ntest1():\n";    CountingPtr<int> p0;    {        CountingPtr<int> p1(new int(42));       std::cout << "*p1: " << *p1 << std::endl;       *p1 = 17;       std::cout << "*p1: " << *p1 << std::endl;       CountingPtr<int> p2 = p1;       std::cout << "*p2: " << *p2 << std::endl;       *p1 = 33;       std::cout << "*p2: " << *p2 << std::endl;       p0 = p2;       std::cout << "*p0: " << *p0 << std::endl;       ++*p0;       ++*p1;       ++*p2;       std::cout << "*p0: " << *p0 << std::endl;       std::cout << "*p1: " << *p1 << std::endl;       std::cout << "*p2: " << *p2 << std::endl;    }    std::cout << "after block: *p0: " << *p0 << std::endl;}void test2(){    std::cout << "\ntest2():\n";    { CountingPtr<int> p0(new int(42));       CountingPtr<int> p2 = p0;    }    CountingPtr<int> p1(new int(42));        std::cout << "qqq" << std::endl;    std::vector<CountingPtr<int> > coll;    std::cout << "qqq" << std::endl;    coll.push_back(p1);    std::cout << "qqq" << std::endl;    coll.push_back(p1);    std::cout << "qqq" << std::endl;    std::cout << "qqq" << std::endl;    ++*p1;    ++*coll[0];    std::cout << *coll[1] << std::endl;}