//standard headers. iostream, etc...


class Box
{
public:
	Box( double alength = 1.0, double aBreadth = 1.0,double aHeight = 1.0);

	double volume() const;

	double getLength() const;
	double getBreadth() const;
	double getHeight() const;

	bool operator<(const Box& abox) const
	{
		return volume() < abox.volume();
	}

private:
	double length;
	double breadth;
	double height;
};

Box::Box(double aLength, double aBreadth, double aHeight):
length(aLength), breadth(aBreadth), height(aHeight) {}

double Box::volume() const
{
	return length*breadth*length;
}

double Box::getBreadth() const { return breadth; }
double Box::getHeight() const { return height; }
double Box::getLength() const { return length; }
int main() 
{ 
	Box one(20, 20, 20);
	Box two(20, 10, 30);

	cout << one < two ? "one has a larger volume than two" : "two has a larger volume than one"<<endl;
        // error on the cout<<... line above this line ^


}