//----------------------------------------------------------------
//
// point-with-private.cpp
//
// Implements a point in two dimensional space. Based on the example
// from Pohl, C++ by Dissection, pages 166-16.
//
// written by: Simon Parsons
// modified  : 20th February 2010
//
//----------------------------------------------------------------

#include <iostream>
using namespace std;

//----------------------------------------------------------------
//
// point

// The class point represents a location in a set of cartesian coordinates.
//
// It has two data members, an x and a y value.
 
class point {

private:
  double x, y;                       // Data members

public:

  void print() const;                // Public functions to manipulate
  void set( double u, double v );    // the private data members.
  double getX();
  double getY();

}; 

// Print the values 

void point::print() const {
  cout << "(" << x << "," << y << ")\n";
}
 
// Set the values.

void point::set( double u, double v ) {
  x = u;
  y = v;
}

// Accessor functions. We need these to get hold of x and y since they
// are private.

double point::getX(){
  return x;
}

double point::getY(){
  return y;
}

// End of point


//----------------------------------------------------------------
//
// Main program

// This creates two instances of point, and then prints out their contents.

int main() {
  point a, b;

  a.set(1.2, 3.4);
  cout << "point a = ";
  a.print();

  b.set(4.5,5.6);
  cout << "point b = ";
  cout << b.getX() << " " << b.getY() << endl;

} 

// end of main()