Sentinel in AP Computer Science A

Definition

A sentinel is a special value used in programming to mark the end of data input, allowing programs to know when to stop processing.

Related terms

Variable Number of Repetitions:

A variable number of repetitions refers to a loop structure where the number of iterations is determined by a condition that can change during runtime.

End-of-file (EOF): EOF is another way to mark the end of data input in programming, often used when reading files or streams.

Null Value: In some cases, null values are used as sentinels in databases or programming languages. They represent missing or unknown values and help indicate when data processing should stop.