//----------------------------------------------------------------
//
// point5.cpp
//
// written by: Simon Parsons
// modified  : 3rd October 2007
//
//----------------------------------------------------------------

#include <iostream>
using namespace std;

//----------------------------------------------------------------
//
// Class definition

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

public:

  point() : x(0), y(0) { }	     // Default constructor
  point( double u ) : x(u), y(0) { } // Convert double to point
  point( double u, double v )        // Initialise both x and y if we are
    : x(u), y(v) { }                 // given values for them.

  void print() const;
  void set( double u, double v );

private:
  double x, y;
}; 

// Member functions of point. Print the values and set the values.

void point::print() const {
  cout << "(" << x << "," << y << ")\n";
} // end of print()
 
void point::set( double u, double v ) {
  x = u;
  y = v;
} // end of set()

//----------------------------------------------------------------
//
// The main program

// This creates three instances of point, creating them in different ways, and
// then printing out their contents.

int main() {
  point a;
  point b(2.2);
  point c(2.3, 4.5);

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

} // end of main()