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SAS Certification Prep Guide: Base Programming for SAS 9, Third Edition by SAS Institute

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Chapter Quiz

Select the best answer for each question. After completing the quiz, check your answers using the answer key in the appendix.
  1. Which is true for the double trailing at sign (@@)?
    1. It enables the next INPUT statement to read from the current record across multiple iterations of the DATA step.
    2. It must be the last item specified in the INPUT statement.
    3. It is released when the input pointer moves past the end of the record.
    4. all of the above
  2. A record that is being held by a single trailing at sign (@) is automatically released when
    1. the input pointer moves past the end of the record.
    2. the next iteration of the DATA step begins.
    3. another INPUT statement that has an @ executes.
    4. another value is ...

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