#include <iostream>

class int_clone
{
    int i;

public:
    int_clone()
    {
        i=0;
    }

    int_clone& operator++()
    {
        ++i;
        return *this;
    }

    const int_clone operator++(int)
    {
        int_clone old_val = *this;
        ++(*this);
        return old_val;
    }

    void print()
    {
        std::cout << i << std::endl;
    }
};


int main ( void )
{
    int_clone i;

    i.print();
    i++;
    i.print();
    i++++;
    i.print();

    return 0;
}