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Official Forum for Programming in ObjectiveC (the iPhone Programming Language)  Stephen Kochan
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Programming in ObjectiveC, 4th edition
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Chapter 8
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Chapter 8  Exercise 3 Solution
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Topic: Chapter 8  Exercise 3 Solution (Read 2439 times)
bertobettencourt
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Posts: 45
Chapter 8  Exercise 3 Solution
«
on:
October 20, 2013, 11:59:34 AM »
Q: What can you say about the relationship between ClassB and ClassB2?
A: They are individual classes, while both are subclasses to ClassA, or both have the same superclass, they have no relation between each other.
Q: Identify the hierarchical relationship the NSObject class, ClassA, ClassB and ClassB2
A:
NSObject (rootclass )

ClassA (superclass to ClassB and B2, and subclass to NSObject)
/ \
ClassB ClassB2 (ClassB and ClassB2 are subclasses of ClassA);
Q: What is the superclass of ClassB?
A: The superclass of ClassB is ClassA and NSObject.
Q: What is the superclass of ClassB2?
A: The superclass of ClassB2 is also ClassA and NSObject.
Q: How many subclasses can a Class have, and how many superclasses can it have?
A: As many as your memory capacity allows, thousands, millions even trillions.
(Needs confirmation)
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cary_W
Newbie
Posts: 10
Re: Chapter 8  Exercise 3 Solution
«
Reply #1 on:
June 11, 2016, 07:21:25 PM »
I think limited superclass can a class have when the superclass reaches the rootclass.
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Programming in ObjectiveC, 5th edition

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