// ΛΥΣΕΙΣ ΘΕΜΑΤΩΝ ΣΕΠΤΕΜΒΡΗ 2016

// ΘΕΜΑ 4.

#include <iostream>
#include <cmath>
using namespace std;

class Point{
	private:
		float x,y,z;
	public:
		Point(float x1, float y1, float z1){
			x = x1;
			y = y1;
			z = z1;
		}

		Point(Point const &p){
			x = p.x;
			y = p.y;
			z = p.z;
		}

		~Point(){
			cout << "Deleting Point("  << x << ","  << y << "," << z << ")\n";
		}

		Point symmetric(){
		    Point p(0,0,0);			
			p.x = -x;
			p.y = -y;
			p.z = -z;
			return p;
		}

		float distance(Point p){
			return sqrt(pow(x- p.x,2) + pow(y- p.y,2) + pow(z- p.z,2));
		}

		Point &operator= (const Point &p){
			if (this != &p){
				x = p.x;
				y = p.y;
				z = p.z;
			}			
			return (*this);	
		}

		bool operator== (const Point &p){
			return (x == p.x && y == p.y && z == p.z);
		}

		friend void print(Point);
};

void print(Point p){
	cout << "Point("  << p.x << ","  << p.y << "," << p.z << ")\n";
}


int main(){
	Point A(1,1,1), B(2,2,2), *c = new Point(3,3,3);
	print(A);
	print(B);

	cout << A.distance(B) << endl << B.distance(*c) << endl << c->distance(A) << endl;
	cout << sqrt(3) << endl << sqrt(3) << endl << sqrt(12) << endl;

	cout << "Testing if A == B\n";
	if (A == B){
		cout << "same points \n";
	}
	else {
		cout << "different points\n";
	}

	B = A;
	cout << "Testing again, if A == B\n";
	if (A == B){
		cout << "same points \n";
	}
	else {
		cout << "different points\n";
	}
	print(B);
	
	print(A.symmetric());
	print(A);	
	print(B);
	print(*c);
	c->~Point();
	
	// delete c;
	return 0;
}