#include <iostream>

using namespace std;

class Polar
{
private:
    double radius = 0;
    double angle =  0;

public:
    Polar() : radius(0), angle(0) {}
    Polar(double r, double angle) : radius(r), angle(angle){}

    double GetRadius()  { return radius; }
    double GetAngle()   { return angle; }

    void Print()
    {
        cout << "radius: " << radius << " angle: " << angle << endl;
    }
};

class Euclidean
{
private:
    double x = 0;
    double y = 0;

public:
    Euclidean() : x(0), y(0) {}
    Euclidean(double x, double y) : x(x), y(y){}

    Euclidean(Polar polar)
    {
        x = polar.GetRadius() * cos(polar.GetAngle());
        y = polar.GetRadius() * sin(polar.GetAngle());
    }

    operator Polar()
    {
        double radius = sqrt
        (
            x * x +
            y * y
        );

        double angle = atan2(y, y);

        return Polar(radius, angle);
    }

    Euclidean operator+(Euclidean e2)
    {
        return Euclidean(x + e2.x, y + e2.y);
    }

    void operator+=(Euclidean e2)
    {
        x += e2.x;
        y += e2.y;
    }

    double GetX() { return x; }
    double GetY() { return y; }

    void Print()
    {
        cout << "x: " << x << " y: " << y << endl;
    }
};

int main()
{
    Polar p(1.4142135623731, 0.78539816339745), p2;
    Euclidean e, e2(1, 1);

    e = p;
    e.Print();

    e2 += e;

    e2.Print();

    p2 = e2;
    p2.Print();
}