The while loop is also called a sentinel-control loop, because its condition is tested at the top of the loop.

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A sentinel-controlled loop is a type of loop that continues until a sentinel value (a specific value that signifies the end of data input) is encountered, which is not specifically tied to the structure of a while loop. While loops are characterized by their condition being tested at the beginning of each iteration, but this does not inherently relate to the concept of sentinel control.

The While Loop Is Also Called a Sentinel-Control Loop, Because