#ifndef COLORH
#define COLORH
#include <iostream>	//for ostream
using namespace std;

class color {
	int red;
	int green;
	int blue;
public:
	color(): red(0), green(0), blue(0) {}	//black by default

	color(int initial_red, int initial_green, int initial_blue);

	friend bool operator==(const color& color1, const color& color2);

	color& operator+=(const color& another);
	color& operator-=(const color& another);

	color& operator*=(double d);
	color& operator/=(double d);

	void print() const;
	friend ostream& operator<<(ostream& ost, const color& c);
};

inline bool operator!=(const color& color1, const color& color2) {
	return !(color1 == color2);
}

inline const color operator+(color color1, const color& color2)
{
	return color1 += color2;
}

inline const color operator-(color color1, const color& color2)
{
	return color1 -= color2;
}

inline const color operator*(color c, double d) {return c *= d;} 
inline const color operator*(double d, color c) {return c *= d;} 
inline const color operator/(color c, double d) {return c /= d;} 

#endif