/*
** $Id: structs.cc 824 2008-03-09 19:23:52Z phf $
**
** Just an example of how structs and classes are related;
** also note that C++ structs are different from C structs!
*/

#include <iostream>

struct Point
{
  // default public visibility
  int x; int y;
private:
  // can make things private though
  int w;
};

class Doint
{
  // default private visibility
  int x; int y;
public:
  // can make things public though
  int w;
};

int main()
{
  // keyword struct in front optional, unlike C!
  Point p;
  // assign to fields, works fine
  p.x = 10; p.y = 20;
  // this won't work, field is private!
//  p.w = 30;
  // allocating a struct dynamically
  Point *pp = new Point();
  // printing stuff
  std::cout << pp->x << std::endl;

  // class in front optional, nobody does that anyway
  Doint d;
  // this won't work, fields are private!
//  d.x = 10; d.y = 20;
  // assign to public field, works fine
  d.w = 30;
  // allocating a class (well, we call it object now) dynamically
  Doint *dp = new Doint();
  // printing stuff
  std::cout << dp->w << std::endl;

  // freeing the dynamic stuff...
  delete pp;
  delete dp;
}