A sentinel value _________ and signals that there are no more values to be entered.
A) is a different data type than the values being processed
B) is a special value that cannot be mistaken as a member of the list
C) indicates the start of a list
D) guards the list

Question

Quizplus · Accepted Answer

A sentinel value is a special value that acts as a marker and is used to indicate the end of a list or data stream. It is chosen in such a way that it cannot be mistaken as a member of the list, hence it is the best choice. For example, in a list of positive numbers, -1 can be used as a sentinel value to indicate the end of the list.

A Sentinel Value _________ and Signals That There Are No