Like macro variables, macro programs (also known as
macros) enable you to substitute text into your SAS programs. Macros
are different from macro variables because they can use conditional
logic to make decisions about the text that you substitute into your
programs. Using macros can help make your SAS programs more dynamic
and reusable.
For example, suppose
you submit a SAS program every day to create registration listings
for courses that are to be held later in the current month. Then,
suppose that every Friday you also submit a SAS program to create
a summary of revenue that has been generated so far in the current
month. By using a macro, you can automate the process so that only
one SAS program is required. This program submits the daily report
and conditionally submits the weekly report if it is Friday. Furthermore,
you could create and store a macro that would automate this process,
and the only code that you would need to submit each day is this:
%reports