What determines the number of times a sentinel-controlled while loop executes?

Understand the Problem

The question is asking for the factors that influence how many times a sentinel-controlled while loop runs in programming. It presents four options to choose from, each representing a different influence on loop execution.

Answer

It is determined by a sentinel value that signals the loop to exit.

A sentinel-controlled while loop continues executing until a specific sentinel value is encountered, which determines when the loop exits.

Answer for screen readers

A sentinel-controlled while loop continues executing until a specific sentinel value is encountered, which determines when the loop exits.

More Information

A sentinel-controlled loop does not have a predetermined number of iterations. Instead, the loop continues until a special sentinel value is encountered. This design allows the loop to process varying amounts of data.

Tips

A common mistake is assuming the loop will execute a fixed number of times without specifying a sentinel to end it.

Sources

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