int main( )
{
Shape* pShape = 0;
pShape = new Circle( 10 );
cout << "Circle的面积是：" << pShape->Area( ) << endl;
delete pShape;
pShape = 0;
pShape = new Rect( 5, 6 );
cout << "Rect的面积是：" << pShape->Area( ) << endl;
delete pShape;
return 0;
}
int main()
{
Circle circle(2.5, 37, 43);
cout << "Circle: ";
circle.Display();
cout << "Circle area: " << circle.Area() << endl << endl;
Rectangle rec(2,4,8,9);
cout << "Rectangle: ";
rec.Display();
cout << "Rectangle area: " << rec.Area() << endl << endl;
Square square(4,6,5);
cout << "Square: ";
square.Display();
cout << "Square area: " << square.Area() << endl << endl;
Shape* p;
p = &circle;
cout << "Circle: ";
p->Display();
cout << "Circle: ";
cout << "Area = " << p->Area() << endl;
p = &rec;
cout << "\nRectangle: ";
p->Display();
cout << "Rectangle: ";
cout << "Area = " << p->Area() << endl;
p = □
cout << "\nSquare: ";
p->Display();
cout << "Square: ";
cout << "Area = " << p->Area() << endl << endl;
func(circle);
func(rec);
func(square);
return 0;
}
void test_three()
{
Circle *circle ;
Point *point ;
Shape *shape ;
IMethod *ptr ;
double area = 0.0 ;
circle = New(Circle) ;
circle->Set(circle , 10.0 , 20.0) ;
circle->Move(circle , 100.0 , 300.0) ;
circle->Position(circle) ;
circle->SetRadius(circle , 30.0) ;
area = circle->Area(circle) ;
circle->SetCircle(circle , 1.0 , 2.0 , 3.0) ;
shape = (Shape*)circle ;
shape->Position(shape) ;
area = shape->Area(shape) ;
point = (Point*)circle ;
point->Move(point , 1000.0 , 2000.0) ;
point->Position(point) ;
circle->AddRadius(circle , 50.0) ;
area = point->Area(point) ;
ptr = (IMethod*)circle ;
// area = ptr->Area() ;
ptr->GetClassName() ;
Delete(ptr) ;
}
void func(const Shape& s)
{
s.Display();
cout << "Area = " << s.Area() << endl << endl;
}