下列程序的执行结果为【 】。include class Point{public:Point(double i, double j)

下列程序的执行结果为【 】。

include ＜iostream. h＞

class Point

{

public:

Point(double i, double j) { x=i; y=j;}

double Area() const { return 0.0;}

private:

double x, y;

};

class Rectangle: public Point

{

public:

Rectangle(double i, double j, double k, double 1)

double Area() const {return w * h;}

private:

double w, h;

};

Rectangle: :Rectangle(double i, double j, double k. double 1): Point(i,j).

{

w=k, h=1

}

void fun(Point &s)

{

cout＜＜s. Area()＜＜end1;

}

void main( )

{

Rectangle rec(3.0, 5.2, 15.0. 25.0);

fun(rec)

}