SAS Certified Professional Prep Guide

Referencing Macro Variables Indirectly

Indirect References

The rules for indirect references for macro variables rules are as follows:

• When multiple ampersands or percent signs precede a name token, the macro processor resolves two ampersands (&&) to one ampersand (&), and re-scans the reference.
• To reference macro variables indirectly, the macro processor scans and resolves tokens from left to right from the point where multiple ampersands or percent signs are coded, until no more triggers can be resolved.

Example: Referencing Macro Variables Indirectly

Suppose you want to write a PROC PRINT step that you can reuse without any modification to print information about each course. You can do this by using an indirect reference ...