What is a pure virtual function in C++?

Question

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Any function in a class

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A virtual function defined in a base class

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A virtual function declared in a base class

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Any function in a class

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A function without definition in a base class

1.	What is a pure virtual function in C++?
A.	A virtual function defined in a base class
B.	A virtual function declared in a base class
C.	Any function in a class
D.	A function without definition in a base class
Answer» C. Any function in a class

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