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21. ________ is object oriented programming language that uses virtual functions, multiple inheritance, exception handling, polymorphism, etc.
(D).None of the above

22. C++ provides comprehensive coverage of abstract classes, such as___________-.
(B).Regular error handling, standard strings
(C).I/O strings
(D).All of the above

23. Making a selection of a choice from two alternatives of a group of alternatives refers to___________.
(B).Transfer of control
(C).Both (a) and (b)
(D).None of the above

24. Which model is used to organize data in the main memory is called data structure?
(D).All of the above

25. An index or subscript is a _________ integer value, which indicates the position of a particular element in the array.
(D).Both (a) and (b)