Chapter 9: Introducing Macro Variables

  1. Correct answer: b
    Macro variables are always text strings that are independent of SAS data sets. The value of a macro variable can be up to 65,534 characters long, and the name of a macro variable can be up to 32 characters long. A macro variable can be defined or referenced anywhere in a SAS program except within data lines. There are two types of macro variables: automatic and user-defined.
  2. Correct answer: c
    To reference a macro variable, you precede the name with an ampersand. You do not need to enclose the macro variable reference in quotation marks.
  3. Correct answer: a
    There are two ways to display the value of a macro variable in the SAS log: you can turn on the SYMBOLGEN system option ...

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