simple inheritance, but perform to sp=new Rectangle (4, 6); Compiler start error
vs and cb don't know...

 # include & lt; iostream> 
# include & lt; Windows. H> 
using namespace std; 
The class hierarchy 
{
Public: 
Shape () {} 
To Shape () {} 
Virtual float GetArea () 
{
return -1; 
} 
}; 

The class Circle: public Shape 
{
Public: 
Circle (radius, float) : itsRadius (radius) {} 
~ Circle () {} 
Float GetArea () 
{
3.14 * * itsRadius itsRadius return (float); 
} 
Private: 
Float itsRadius; 
}; 

Class a Rectangle: public Shape 
{
Private: 
Float itsWidth; 
Float itsLength; 
Public: 
A Rectangle (float len, float width) 
{
ItsLength=len; 
ItsWidth=width; 
}; 
~ a Rectangle () {}; 
Virtual float GetArea () 
{
Return itsLength * itsWidth; 
} 
Virtual float GetLength () 
{
Return itsLength; 
} 
Virtual float GetWidth () 
{
Return itsWidth; 
} 
}; 

The class Square: public Rectangle 
{
Public: 
Square (float len) : a Rectangle (len, len) {}; 
~ Square () {}; 
}; 


Int main () 
{
System (" color F3 "); 
Shape * sp; 
Sp=new Circle (5); 
Cout & lt; <"The area of The Circle is" & lt; The delete sp; 

Sp=new Rectangle (4, 6); 
Cout & lt; <"The area of The Rectangle is" & lt; The delete sp; 

Sp=new Square (5); 
Cout & lt; <"The area of The Square is" & lt; The delete sp; 
return 0; 
} 

CodePudding user response:

Will be the name of the class class Rectangle, instead: class Rectangle_m try,