Question

____ belong to a class and exist as a single copy.

(a) Member variables

(b) Instance variables

(c) Class variables

(d) Variables

The question was asked in an international level competition.

I need to ask this question from Software Architecture topic in portion Software Defined Radio Architecture of Cognitive Radio

Answer 1

Right choice is (c) Class variables

To elaborate: Class variables belong to a class and exist as a single copy. Instance variables belong to individual objects. Instance variables exists as many copies. Each copy is paired with a separate object. Member variables include class variables and instance variables.