#include <iostream>

using namespace std;

class A
{
public:
A(int i_=0, double d_=0) : i(i_), d(d_) { }

const A operator++(int) /// postfix
{
A old(*this);

//++i;
//++d;
++(*this);

return old;
}

/**
This is an option for the postfix ++. But since it returns void,
we cannot use it in an expression, say (a++) + 1.
*/
//void operator++(int)
//{
// ++(*this);
//}

A& operator++() /// prefix
{
++i;
++d;

return (*this);
}

const A operator--(int)
{
A old(*this);

--i;
--d;

return old;
}

A& operator--()
{
--i;
--d;

return *this;
}
void print() const
{
cout<<"i = "<<i<<", d = "<<d<<endl;
}

private:
int i;
double d;
};

int main(int argc, char** argv)
{
A a(2, 3.4);
a.print();

(a++);
a.print();
++a;
a.print();

//A b(-3, 9.2);
//b.print();

//b--;
//b.print();
//--b;
//b.print();

return 0;
}