How does polymorphism enable you to program “in the general” rather than “in the specific”? Discuss the key advantages of programming “in the general.”
What will be an ideal response?
Polymorphism enables the programmer to concentrate on the common operations
that are applied to objects of all the classes below a particular base class in a hierarchy.
The general processing capabilities can be separated from any code that is specific to
each class. Those general portions of the code can accommodate new classes without
modification. In some polymorphic applications, only the code that creates the objects
needs to be modified to extend the system with new classes.
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What value does function mystery return when called with a value of 4?
int mystery (int number) { if (number <= 1) { return 1; } else { return number * mystery(number – 1); } } a. 0. b. 1. c. 4. d. 24.
A __________ is a term used to describe a select list that allows the user to select an option to load another web page.
a. navigation b. page header c. jump menu d. none of the above
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