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Revision: 63950
at June 20, 2013 19:14 by natsja
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)


%macro loop(values);  
* Count the number of values in the string;
%let count=%sysfunc(countw(&values));
* Loop through the total number of values;
%do i = 1 %to &count;
%let value=%qscan(&values,&i,%str(,));
%put &value;
%end;
%mend;                                                                                                                                   
* %STR is used to mask the commas from the macro compiler when;
* the macro %LOOP is called.;
%loop(%str(2,3,5,7,11,13,17))
Initial URL 
http://support.sas.com/kb/25/961.html
Initial Description 
3 examples
Initial Title 
Using character values on a macro %DO loop
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SAS