sas adv 130题中的第80题，用程序跑了下，确实是rc取值为low,但我不明白为什么，明明totalobs是大于10的呢，不应该是high吗？求大神指点！！
data prosale;
input sale;
datalines;
1
2
4
6
7
8
8
5
4
4
4
4
4
4
5
;
run;
%let rc=begin;
%macro test;
data out;
set prosale nobs=totalobs;
if totalobs>10 then do;
%let rc=high;
end;
else do;
%let rc=low;
end;
run;
%put rc=&rc;
%mend;
%let rc=before execution;
%test