#include "Fraction.h"

bool Fraction::read()
{
	std::cin >> numerator >> denominator;
	simplify();
	return std::cin.good();
}

bool Fraction::simplify()
{
	long long common = gcd();
	numerator /= common;
	denominator /= common;

	if ( denominator < 0 )
	{
		numerator *= -1;
		denominator = -denominator;
	}

	return common > 1;
}

long long Fraction::gcd(long long a, long long b)
{
	a = a >= 0 ? a : -a;
	b = b >= 0 ? b : -b;

	while ( b > 0 )
	{
		long long t = b;
		b = a % b;
		a = t;
	}
	return a;
}

Fraction Fraction::add(const Fraction& other) const
{
	return Fraction(
	    this->numerator * other.denominator + denominator * other.numerator
	            , denominator * other.denominator);
}

Fraction Fraction::operator*(const Fraction& other) const
{
	return Fraction( numerator * other.numerator, denominator * other.denominator);
}

// } // namespace ecci