Question

45. How do we declare an "interface" class?
(A) By making all the methods pure virtual in a class
(B) By making all the methods abstract using the keyword "abstract" in a class
(C) By declaring the class as interface with the keyword "interface"
(D) It is not possible to create interface class in C++​

Answer 1

Answer:

(A) By making all the methods pure virtual in a class