Class or Object Inheritance

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hi all i m just removing this question if its teaching cheat to students or misleading some others.

Which of the following is/are true about the class?

(A) Classes can have both constructors and destructors
(B) Classes are reference type
(C) Classes does not support Inheritance
(D) All of the above are true

Thanks.

Posted 24-Jul-13 2:40am

S.P.Tiwari

Updated 24-Jul-13 20:50pm

v4

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Pheonyx 24-Jul-13 9:02am

Do you mean Constructors not Contractors ?

S.P.Tiwari 24-Jul-13 9:09am

yes constructors.
i just copy ans paste the same from the site where i found.
Thanks

Sergey Alexandrovich Kryukov 24-Jul-13 9:59am

With such knowledge of you and "debaters", there is nothing to do in development. And there is nothing more destructive to knowledge than those multiple-choice question. You are not learning anything, just fooling around.
—SA

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Ron Beyer · Accepted Answer · 2013-07-24T03:07:00

Solution 1

The answer is A and B...

Classes can have constructors and destructors. (If you can construct it, you need to be able to destroy it)
Classes are reference types (value types are like int, long, short, etc)
Classes DO support inheritance, its a fundamental concept of OOP.

I'm not sure what the debate can be. C++ and C# both support inheritance on classes. The only debate I can think of is multiple inheritance which C# does not support and C++ does.

Posted 24-Jul-13 3:07am

Ron Beyer

Comments

S.P.Tiwari 24-Jul-13 9:16am

thanks.

Sergey Alexandrovich Kryukov 24-Jul-13 10:02am

All correct, but sorry, I just cannot lift my hand to vote. To me, existing of such questions, and such questionnaires, and people playing such stupid games is such a shame. If it just the anti-knowledge in the very beginning. I hope you understand me...
—SA

Ron Beyer 24-Jul-13 10:16am

Understood, the methodology is flawed I agree, I also believe that multiple choice questions don't further knowledge because they really don't require you to use your analytical or critical thinking skills.

Sergey Alexandrovich Kryukov 24-Jul-13 10:51am

Worse, such questionnaires actually teach students to cheat.
—SA

Stefan_Lang 25-Jul-13 7:48am

Actually, if taken literally, whether or not a class must be a reference type depends on the language you're talking about. In C/C++, classes can be used both by value and by reference.

The Wikipedia article at http://en.wikipedia.org/wiki/Reference_type even states that in managed C++/CLI you can explicitely define a value type class or struct with the value keyword!