class Rectangle
{

private:
  double length;
  double width;

//Constructor

public:
  Rectangle :: Rectangle(double l, double w)
  {
    length = l;
    width = w;
  }

  Rectangle :: Rectangle()
  {
    length = 0;
    width = 0;
  }

  double Rectangle :: perimeter()
  {
    return 2 * (length + width);
  }

  double Rectangle :: area()
  {
    return length * width;
  }

  double Rectangle :: getLength()
  {
    return length;
  }

  void Rectangle :: setLength(double l) 
  {
    length = l;
  }

  void Rectangle :: setWidth(double w) 
  {
    width = w;
  }

  double Rectangle :: getWidth()
  {
    return width;
  }

};