Question

A sentinel value ________ and signals that there are no more values to be entered:____

Answer 1

Answer:

The answer is "Option b".

Explanation:

Sentinel [..] is a special value, which existence ensures the end of a loop, which performs structured data. It allows the information end to be identified where no other means are available for this, and wrong choices can be described as follows:

• In option a, It is a special value, not a data type, that's why it is not correct.
• Option c and Option d both were wrong because, It is an empty list, and it can't indicate the starting point of the list and guards the list.