/**
 * CSE 374 Example
 * muh
 * more syntax for C++ classes
 */ 

#include <iostream>

using namespace std;  // for the iostream stuff.

class Rectangle {
  int length;
  int width;
  
public:
  // constructor
  Rectangle ();  //default
  Rectangle (int l, int w);
  
  // destructor
  virtual ~Rectangle () {};
  
  int getArea();
};

// this is really simple, so we are just going to initialize
// this syntax with the colon is to initialize values before the
// construction.  Its used with constructors.  You can set const
// member variables this way.
Rectangle::Rectangle() 
  : length(1), width(2) {
  cout << "Default constructor" << endl;
}

Rectangle::Rectangle(int l, int w)
  : length(l), width(w) {}

int Rectangle::getArea() {
  return length*width;
}

class Square : public Rectangle {
public:
  Square(); // default
  Square(int s); // constructor
  virtual ~Square();  // destructor
};

// Here we are using the initialization syntax to call the 
// constructor of the Base class.
Square::Square ()
  :Rectangle (2,2) {}

Square::Square (int s)
  :Rectangle (s,s) {}

Square::~Square() {
  cout << "Destructing Square" << endl;
}

int main () {
  cout << "Make a couple of rectangles" << endl;
  Rectangle r1;  // calls default constructor
  Rectangle r2(3,4);
  cout << "Areas of r1: " << r1.getArea() << endl;
  cout << "Areas of r2: " << r2.getArea() << endl;
  // can't do this because default access is private:
  // cout << "Rectangle members: " << r1.length << endl;

  
  cout << "Make a couple of squaress" << endl;
  Square s1;  // calls default constructor
  Square s2(4);
  cout << "Areas of s1: " << s1.getArea() << endl;
  cout << "Areas of s2: " << s2.getArea() << endl;

}