Question

(15)Given the following classes, how would you arrange them in an inheritance hierarchy?

class Pen; class BallPoint; class Pencil; class MechnicalPencil; class WoodPencil; class WritingInstrument; class FountainPen;

Draw the inheritance diagram and relate the classes via C++ code.

Answer 1

Your Inheritance diagram would look like this:

  

The class will be related as follows:

class WritingInstrument // super class of Pen and Pencil
{
  
}

class Pen : public WritingInstrument// pen is Writing instrument
{
  
}

class Pencil : public WritingInstrument// pencil is writing instrument
{
  
}

class BallPoint : public Pen // BallPoint is a Pen
{
  
}

class MechanicalPencil : public Pencil // MechanicalPencil is a Pencil
{
  
}

class WoodPencil : public Pencil // WoodPencil is a Pencil
{
  
}

class FountainPen : public Pen// FountainPen is a pen
{
  
}

Hope it clears your doubt, and you like it. :)