* YoungerOlder Example with errors.
data kids;
   infile "c:/datasets/kids.txt" firstobs=2;
   length name 13;
   input name $ gender $ age;
   if age < 10 then category = "Younger"
   else category = "Older";

proc means data=kids noprint;
   where age < 9;
   output out=older n=count_younger;

proc means data=kids noprint;
   where age >= 10;
   output younger n=count_older;

data _null_;
   file 'c:/datasets/report.txt' header=head;
   title "Report: Younger and Older Kids";
   if _n_ = 1 set younger;
   if _n_ = 1 set older;
   put @5 name $13. @22 gender 1. @35 category $7;

head:
   put Count of Younger Kids:  count_younger;
   put Count of Older Kids:  count_older /;
   put @5 "Name" @20 "Gender" @35 "Category";
   put @5 "=============" @20 "======" 35 "========";
   
quit;

* Corrected Version

data kids;
   infile "c:/datasets/kids.txt" firstobs=2;
   length name $ 13;
   input name $ gender $ age;
   if age < 10 then category = "Younger";
   else category = "Older";

proc means data=kids noprint;
   where age < 9;
   output out=younger n=count_younger;

proc means data=kids noprint;
   where age >= 10;
   output out=older n=count_older;

data _null_;
   file 'c:/datasets/report.txt' print header=head;
   title "Report: Younger and Older Kids";
   if _n_ = 1 then set younger;
   if _n_ = 1 then set older;
   set kids;
   put @5 name $13. @22 gender $1. @35 category $7.;
   return;

head:
   put "Count of Younger Kids:"  count_younger;
   put "Count of Older Kids:"  count_older /;
   put @5 "Name" @20 "Gender" @35 "Category";
   put @5 "=============" @20 "======" @35 "========";
   
run;
quit;