#ifndef __TEST_CPP__
#define __TEST_CPP__
#include <iostream>
#include <vector>
#include <iterator>
#include <algorithm>
using namespace std;
class Base : public unary_function<int, void>
{
public:
        Base() {}
        Base(const Base& base)
        {
                n_copied++;
        }
        void operator()(int num)
        {
                cout << num_op(num) << " ";
        }
        Base& operator=(const Base& base)
        {
                n_assigned++;
        }
        static int n_copied;
        static int n_assigned;
private:
        virtual int num_op(int num)
        {
                return num;
        }
};
int Base::n_copied = 0;
int Base::n_assigned = 0;
class Derived : public Base
{
public:
        Derived() {}
        Derived(const Derived& d)
        {
                n_copied++;
        }
private:
        virtual int num_op(int num)
        {
                return num*num;
        }
};
int main(int argc, char* argv[])
{
        vector<int> coll;
        for (int i = 0; i < 10; i++)
                coll.push_back(i);
        Base b;
        Derived d;
        cout << "n_copied = " << Base::n_copied << endl;
        for_each<vector<int>::iterator,
 Base&>(coll.begin(), coll.end(), b);
        cout << endl;
        cout << "n_copied = " << Base::n_copied << endl;
        for_each<vector<int>::iterator, Base&>(coll.begin(), coll.end(), d);
        cout << endl;
        cout << "n_copied = " << Derived::n_copied << endl;
        return 0;
}
#endif