class Rectangle
{
public:
	// constructor 
	Rectangle(float l = 0, float w = 0); 

	// methods for retrieving and modifying private data
	float GetLength(void) const; 
	void PutLength(float l); 
	float GetWidth(void) const; 
	void PutWidth (float w); 

	// compute and return rectangle measurements
	float Perimeter(void) const; 
	float Area(void) const; 

private:
	// length and width of the rectangle object
	float length, width;  
};