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Revision: 63832
at June 11, 2013 09:01 by webonomic
Initial Code 
/* This macro will allow you to step through the lowercase letters of  */
/* the alphabet on a %DO loop.  For uppercase letters, edit the first  */
/* %LET statement to include them as well.                             */

%macro iterm(beg,end);
 %let lst=a b c d e f g h i j k l m n o p q r s t u v w x y z;
 %let start=%sysfunc(indexc(%sysfunc(compress(&lst)),&beg));
 %let finish=%sysfunc(indexc(%sysfunc(compress(&lst)),&end));
  %do i = &start %to &finish;
   %put %scan(&lst,&i);
  %end;
%mend;

/* Just pass in starting and ending value */
%iterm(a,e)


/** An alternative to the above example using the RANK and BYTE function **/
%macro iterm(beg,end);
%do i = %sysfunc(rank(&beg)) %to %sysfunc(rank(&end));
  %put %sysfunc(byte(&i));
%end;
%mend;
/* Just pass in starting and ending value */
%iterm(a,e)
Initial URL 
http://support.sas.com/kb/25/961.html
Initial Description 
This sample contains 2 macro techniques for iterating through character values on a macro %DO loop.
Initial Title 
Using character values on a macro %DO loop
Initial Tags 
list
Initial Language 
SAS