#include <iostream>
using namespace std;

template <typename T>
class My_Point {
	T x;
	T y;
public:
	My_Point(T x, T y) : x(x), y(y) {};
	My_Point() {
		string wyjatek = "Wyjatek!";
		throw wyjatek;
	}
	T X() {
		return x;
	}
	T Y() {
		return y;
	}
};


template <typename T>
class My_Vector {
	My_Point<T>* a;
	My_Point<T>* b;
public:
	My_Vector() {
		std::string wyjatek = "Konstruktor domyslny Vector!";
		throw wyjatek;
	}
	My_Vector(My_Point<T> &a, My_Point<T> &b) {

		this->a = new My_Point<T>(a.X(), a.Y());
		this->b = new My_Point<T>(b.X(), b.Y());
	}
	~My_Vector() {
		delete a;
		delete b;
	}

	double dlugosc() {
		return sqrt(pow((a->X() - b->X()), 2) + pow((a->Y() - b->Y()), 2));
	}

	T getX() {
		return a->X();
	}
	T getY() {
		return a->Y();
	}
	T getXb() {
		return b->X();
	}
	T getYb() {
		return b->Y();
	}

	double iloczyn(My_Vector<T> &R, My_Vector<T> &M) {
		return ((R.getXb() - R.getX())*(M.getXb() - M.getX())) + ((R.getYb() - R.getY())*(M.getYb() - M.getY()));
	}
};


int main()
{
	My_Point<int> A(1, 2);
	My_Point<int> B(3, 5);

	My_Point<int> A1(1, 2);
	My_Point<int> B1(1, 2);

	My_Vector<int> C(A, B);
	My_Vector<int> D(A1, B1);

	double g;
	double h;
	double j;
	g = C.dlugosc();
	h = D.dlugosc();
	j = C.iloczyn(C, D);

	cout << "Dlugosc wektora 1: " << g << "\n";
	cout << "Dlugosc wektora 2: " << h << "\n";
	cout << "Iloczyn skalarny: " << j << "\n";

	return 0;
}