main.cpp

this a good book.

#include<iostream.h>

class Rect
{
private:
	double ledge,sedge;
public:
	Rect()
	{
		cout<<"Default constructor .\n";
	}
	Rect(double l,double s)
	{
		ledge=l;sedge=s;
		cout<<"Constructor .\n";
	}
	void Set(double l,double s)
	{
		ledge=l;sedge=s;
	}
	void Area()
	{
		cout<<"Area is "<<ledge*sedge<<endl;
	}
 };
void main()
{
	Rect Rect1(2.0,5.0);
/***************** found *****************/
	Rect Rect2(1);
/***************** found *****************/
	Rect Rect3;
	Rect1.Area();
/***************** found *****************/
	Rect2.ledge = 0; Rect2.sedge = 0;
	Rect2.Area();
	Rect3.Area();
}