#ifndef POINTH
#define POINTH
#include <iostream>
using namespace std;

ostream& cartesian(ostream& ost);
ostream& polar(ostream& ost);

class point {
	static const int subscript; //subscript of new element in iword "array"
	double x, y;
public:
	point(double initial_x = 0, double initial_y = 0)
		: x(initial_x), y(initial_y) {}

	friend ostream& cartesian(ostream& ost) {
		ost.iword(subscript) = 0;   //Cartesian coordinates
		return ost;
	}

	friend ostream& polar(ostream& ost) {
		ost.iword(subscript) = 1;   //polar coordinates
		return ost;
	}

	friend ostream& operator<<(ostream& ost, const point& p);
};
#endif