#include<iostream>
using namespace std;

class FazzyNumber
{
	double* e1, * x, * e2;

public:
	FazzyNumber()
	{
		e1 = new double;
		x = new double;
		e2 = new double;
		cout << endl << "K" << endl;
	}
	FazzyNumber(double E1, double X, double E2)
	{
		e1 = new double(E1);
		x = new double(X);
		e2 = new double(E2);
		cout << endl << "K" << endl;
	}
	FazzyNumber(const FazzyNumber& obj)
	{
		x = new double;
		*x = *obj.x;

		e1 = new double;
		*e1 = *obj.e1;

		e2 = new double;
		*e2 = *obj.e2;

		cout << endl << "KK" << endl;
	}

	FazzyNumber operator+(const FazzyNumber& obj)
	{
		FazzyNumber res;
		*res.e1 = *x + *obj.x - *e1 - *obj.e1;
		*res.x = *x + *obj.x;
		*res.e2 = *x + *obj.x  + *e2 + *obj.e2;
		return res;
	}

	FazzyNumber operator-(const FazzyNumber& obj)
	{
		FazzyNumber res;
		*res.e1 = *x - *obj.x - *e1 - *obj.e1;
		*res.x = *x - *obj.x;
		*res.e2 = *x - *obj.x + *e2 + *obj.e2;
		return res;
	}

	FazzyNumber operator*(const FazzyNumber& obj)
	{
		FazzyNumber res;
		*res.e1 = (*x) * (*obj.x) - (*obj.x) * (*e1) - (*x) * (*obj.e1) + (*e1) * (*obj.e1);
		*res.x = (*x) * (*obj.x);
		*res.e2 = (*x) * (*obj.x) + (*obj.x) * (*e2) + (*x) * (*obj.e2) + (*e2) * (*obj.e2);
		return res;
	}

	FazzyNumber operator/(const FazzyNumber& obj)
	{
		FazzyNumber res;
		*res.e1 = (*x - *e1) / (*obj.x + *obj.e2);
		*res.x = *x / *obj.x;
		*res.e2 = (*x + *e2) / (*obj.x - *obj.e1);
		return res;
	}

	bool operator==(const FazzyNumber& obj)
	{
		if (*e1 == *obj.e1 && *x == *obj.x && *e2 == *obj.e2)
			return true;
		else return false;
	}

	bool operator!=(const FazzyNumber& obj)
	{
		if (*e1 != *obj.e1 && *x != *obj.x && *e2 != *obj.e2)
			return true;
		else return false;
	}

	FazzyNumber& operator=(const FazzyNumber& obj)
	{
		*e1 = *obj.e1;
		*x = *obj.x;
		*e2 = *obj.e2;
		return *this;
	}

	friend ostream& operator<<(ostream& out, const FazzyNumber& obj);
	friend istream& operator>>(istream& in, const FazzyNumber& obj);

	~FazzyNumber()
	{
		delete e1;
		delete x;
		delete e2;
		cout << endl << "D" << endl;
	}
};

ostream& operator<<(ostream& out, const FazzyNumber& obj)
{
	out << "(" << *obj.e1 << "," << *obj.x << "," << *obj.e2 << ")";
	return out;
}

istream& operator>>(istream& in, const FazzyNumber& obj)
{
	in >> *obj.e1 >> *obj.x >> *obj.e2;
	return in;
}

int main()
{
	setlocale(LC_ALL, "rus");

	double e1, x, e2;

	cout << "Введите значения е1, х, е2 для первого нечеткого числа: ";
	cin >> e1 >> x >> e2;
	FazzyNumber A(e1, x, e2);

	cout << "Введите значения е1, х, е2 для второго нечеткого числа: ";
	cin >> e1 >> x >> e2;
	FazzyNumber B(e1, x, e2);

	char F;

	do
	{
		char S;

		cout << "\n1 - Сумма.\n2 - Разность.\n3 - Умножение.\n4 - Деление.\n5 - Сравнить." << endl;
		cin >> S;
		switch (S)
		{
		case '1':
			cout << "Сумма: " << A + B << endl;
			break;
		case '2':
			cout << "Разность: " << A - B << endl;
			break;
		case '3':
			cout << "Умножение: " << A * B << endl;
			break;
		case '4':
			cout << "Деление: " << A / B << endl;
			break;
		case '5':
			if (A == B)
				cout << "Нечеткие числа равны." << endl;
			else cout << "Нечеткие числа не равны." << endl;
			break;
		}
		cout << "\n0 - Выход.\n1 - Продолжить." << endl;
		cin >> F;

	} while (F != '0');

	return 0;
}