Introduction to OOP

Chapter 13: Multiple Inheritance:

Possible Solutions

1.: Make Number subclass of Magnitude, but redefine comparison operators in class complex to give error message if used. (subclassing for limitation)
2.: Don't use inheritance at all - redefine all operators in all classes. (flattening the inheritance tree).
3.: Use part inheritance, but simulate others - use Number, but have each number implement all relational operators.
4.: Make Number and Magnitude independent, and have Integer inherit from both. (multiple inheritance).