// Author: Volker Crede
// Date: 02/18/2008

#include <iostream>
using namespace std;

class Rectangle {
  double iLength; // private member variables
  double iWidth;

  public:
  Rectangle();    // Default Constructor
  Rectangle(double aLength, double aWidth);

  void setLength(double aLength){ iLength = aLength; }
  void setWidth(double aWidth) { iWidth = aWidth; }
  void print();

  double getLength(){ return iLength; }
  double getWidth() { return iWidth; }
  double area();
};

// Default Constructor
Rectangle::Rectangle(){
  setLength(0.0);
  setWidth(0.0);
}

Rectangle::Rectangle(double aLength, double aWidth){
  setLength(aLength);
  setWidth(aWidth);
}

// Calculates area
double Rectangle::area() {
  return iLength*iWidth;
}

// Prints area
void Rectangle::print() {
  cout << endl 
       << "The area of the rectangle with width = " << getWidth()
       << " and length = " << getLength() << " is " << area() 
       << "." << endl;
}

main() {
  double length = 0.0, width = 0.0;
  Rectangle rectangle(10.0,20.0);

  rectangle.print();

  cout << endl << "Length = ";
  cin >> length;
  cout << "Width = ";
  cin >> width;

  rectangle.setLength(length);
  rectangle.setWidth(width);
  rectangle.print();
}