#include <iostream>
#include <cmath>
using namespace std;
class Complex {
private:
    double re, im;

public:
    Complex(double re_new = 0, double im_new = 0): re(re_new), im(im_new) {
    }
    double Re() const {
        return re;
    }
    double Im() const {
        return im;
    }
};
double abs(const Complex& c) {
    return sqrt(c.Re() * c.Re() + c.Im() * c.Im());
}
Complex operator + (const Complex& z) {  // унарный плюс
    return Complex(+z.Re(), +z.Im());
}
Complex operator - (const Complex& z) {  // унарный минус
    return Complex(-z.Re(), -z.Im());
}

Complex operator + (const Complex& a, const Complex& b) {  // бинарный плюс
    return Complex(
        a.Re() + b.Re(),
        a.Im() + b.Im());
}

Complex operator - (const Complex& a, const Complex& b) {  // бинарный минус
    return Complex( a.Re() - b.Re(), a.Im() - b.Im() );
}

Complex operator * (const Complex& a, const Complex& b) {  // умножение
    return Complex(
        a.Re() * b.Re() - a.Im() * b.Im(),
        a.Re() * b.Im() + a.Im() * b.Re());
}

Complex operator / (Complex &c1, Complex &c2) {
    return Complex(
        (c1.Re() * c2.Re() + c1.Im() * c2.Im()) / (c2.Re() * c2.Re() + c2.Im() * c2.Im()),
        (c2.Re() * c1.Im() - c1.Re() * c2.Im()) / (c2.Re() * c2.Re() + c2.Im() * c2.Im()));
}

bool operator== (const Complex &c1, const Complex &c2) {
    return c1.Re() == c2.Re() && c1.Im() == c2.Im();
}

bool operator!= (const Complex &c1, const Complex &c2) {
    return c1.Re() != c2.Re() || c1.Im() != c2.Im();
}
int main() {
    Complex c1(1, 3);
    Complex c2(2, 4);
    cout << c1.Re() << " " << c1.Im() << endl;
    cout << c2.Re() << " " << c2.Im() << endl;
    if (c1 == c2) {
        cout << 1;
    }
    else {
        cout << "error" << endl;
    }
    c1 = c1 + c2;
    cout << c1.Re() << " " << c1.Im() << endl;
    cout << c2.Re() << " " << c2.Im() << endl;
    c1 = c1 - c2;
    c2 = c1 - c2;
    cout << c1.Re() << " " << c1.Im() << endl;
    cout << c2.Re() << " " << c2.Im() << endl;
    cout << abs(c1) << " " << abs(c2) << endl;
    system("pause");
}