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K&B Mock exam doubt

 
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Hi all,

Following are true statements in the master exam of K&B

1) is-a relationships always rely on inheritance.
2) is-a relationships always require at least two class types.


Statement 1 I feel is incorrect because K&B pg# 90 IS-A description which states that is-a can be through classes or interfaces.

Interfaces are not part of inheritance tree, so I am confused how 1) is correct.

Statement 2 can be correct based on the belief that interfaces are also class types.

Please let me know what you think about the two statements.

Thanks,
Megha
 
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Originally posted by megha joshi:
... Please let me know what you think...


I think you are correct, unless there is a definition of "IS-A" that I'm not aware of.
 
megha joshi
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Thanks Marc!!
 
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How would you guys feel if the word "always" were changed to "typically" for both answers?
 
marc weber
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Originally posted by Bert Bates:
How would you guys feel if the word "always" were changed to "typically" for both answers?


Sounds good!

(I think the word "always" prompts people to look for a counterexample.)
 
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Originally posted by Bert Bates:
How would you guys feel if the word "always" were changed to "typically" for both answers?




Ya Bert,

now it sounds and FEELS much better to understand.

Regards,
Gitesh
 
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