In article <5p13pf$hmt@alexander.INS.CWRU.Edu>, pat@po.CWRU.Edu (Paul A. Thompson) wrote:

[...] >>For this particular situation, namely, the possible values for a, >>you can try the following: >>%let check=(23,45,69,93); >>%if %index(check,&a)=0 %then %let b=2; >> %else %let b=1; >> > >This simply won't work for many cases. How about cases where &a=3? > >To the best of my knowledge, you can't get around the need for a loop. [...]

How 'bout something like:

%let check=x23x45x69x93x; %if %index(&check,x&a.x)=0 %then %let b=2; %else %let b=1;

Commas would be nicer delimeters, and you can wrap them around &check inside the %index so the %let looks more SAS like (%let check=23,45,69,93;), but I can't be bothered with quoting at this time of night!

Cheers -- 8 Bare The box said "Requires Windows 95, or better", so I bought a o-+-o Foot Macintosh < > Guru