// Very simple C++ program, in transition from a C# version.

#include <cmath>
#include <iostream>

using namespace std;

class Point {
private: 
  double x, y;

public:

  Point(double x_coord, double y_coord): x(x_coord), y(y_coord)
    { }

  Point(): x(0.0), y(0.0)
    { }

  double getx (){
    return x;
  }

  double gety (){
    return y;
  }

  void move(double dx, double dy){
    x += dx; y += dy;
  }

  double distance_to(Point p){
    return sqrt((x - p.x) * (x - p.x) + (y - p.y) * (y - p.y));
  }

};



int main(){

  Point p, 
        q = Point(3.0, 4.0),
        r(3.0, 4.0);

  p.move(2,3);
  q.move(4,5);

  double d = q.distance_to(r);

  cout << d << endl;

  cout << "Point p: " << p.getx() << ", " << p.gety() << endl;
}