SAS Certification Prep Guide, 4th Edition

Chapter 10: Processing Macro Variables at Execution Time

1. Correct answer: c

   Most macro functions are handled by the macro processor before any SAS language statements in the DATA step are executed. For example, the %LET statement and any macro variable references (&macvar) are passed to the macro processor before the program is compiled. In order to create or update macro variables during DATA step execution, you use the SYMPUT routine.
2. Correct answer: a

   To create a macro variable and assign to it a value that is based on the value of a DATA step variable, you use the SYMPUT routine. In the SYMPUT routine, to assign a literal string as a macro variable name, you enclose the literal in quotation marks. To assign a literal string as ...