填空题
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=l;
}
void fun(Point&s)
{
cout＜＜s.Area( )＜＜endl;
}
void main( )
{
Rectangle rec(3.0,5.2,15.0,25.0);
fun(rec);
}
【参考答案】
0