19. How does an array of class objects declared with multiple inheritance? 20. What are the syntactic rules to be followed to avoid ambiguity in single inheritance? 21. What are the syntactic rules to...

19. How does an array of class objects declared with multiple inheritance?

20. What are the syntactic rules to be followed to avoid ambiguity in single inheritance?

21. What are the syntactic rules to be followed to avoid ambiguity in multiple inheritance?

22. Explain the relationship among the terms superclass, subclass, base class and derived class.

23. Explain a class hierarchy in which a base class has multiple base classes.

24. Explain a class hierarchy in which a derived class has multiple base classes.

25. Explain the following with syntactic rules:

(i) Public inheritance

(ii) Protected inheritance

(iii) Private inheritance