// ConsoleApplication1.cpp: Definiuje punkt wejścia dla aplikacji konsolowej.
//

#include "stdafx.h"
#include <iostream>

int gcd(int a, int b);

class RN
{
public:
	int numerator;
	int denominator;
	RN operator+=(const RN& rhs)
	{
		this->numerator = this->numerator * rhs.denominator + rhs.numerator * this->denominator;
		this->denominator = this->denominator * rhs.denominator;
		this->simplify();
		return *this;
	}
	RN operator=(RN rhs)
	{
		this->numerator = rhs.numerator;
		this->denominator = rhs.denominator;
		return *this;
	}
	RN() {};
	RN(int n, int d)
	{
		this->numerator = n;
		this->denominator = d;
		this->simplify();
	}
	void simplify();
};

void RN::simplify()
{
	int a = gcd(numerator, denominator);
	numerator /= a;
	denominator /= a;
}

int gcd(int a, int b)
{
	return b == 0 ? a : gcd(b, a%b);
}

std::ostream& operator<<(std::ostream& os, const RN& obj)
{
	std::cout << obj.numerator << "/" << obj.denominator;
	return os;
}

inline RN operator+(RN lhs, const RN& rhs)
{
	lhs.numerator = lhs.numerator * rhs.denominator + rhs.numerator * lhs.denominator;
	lhs.denominator = lhs.denominator * rhs.denominator;
	lhs.simplify();
	return lhs;
}

inline RN operator*(RN lhs, const RN& rhs)
{
	lhs.numerator = lhs.numerator * rhs.numerator;
	lhs.denominator = lhs.denominator * rhs.denominator;
	lhs.simplify();

	return lhs;
}

inline bool operator==(const RN& lhs, const RN& rhs)
{
	if (lhs.numerator == rhs.numerator && lhs.denominator == rhs.denominator)
		return true;
	return false;
}

int main()
{
	RN a = RN(3, 9);
	RN b = RN(1, 3);
	std::cout << a << " " << b << " " << " " << a + b << " " << a * b << std::endl;
	a += b;
	std::cout << a << std::endl;
	a = b;
	if (a == b) std::cout << "Dziala" << std::endl;

    return 0;
}