Transcription: The Iostream library includes a set of special functions called manipulators that you can call by inserting or extracting the function name from a stream. Manipulators are more convenient than conventional functions because you can call them in the midst of a series of input or outputs. In this example, the manipulator setBase specifies that a hexadecimal value is assigned to secVal. The characters that are extracted from cin and placed in SecVal are treated as hexadecimal digits.