IF THEN statements in SAS with character variables

[xinyao]

if drug=pimozide then ddi1=pimozide;
if drug=ziprasidone then ddi1=ziprasidone;
if drug=selegiline then ddi1=selegiline;
 
drugp="pimozide";
drugp="fluconazole";
drugp="ziprasidone";
 
ddicomb=ddi1||drugp;

I want if ddicomb=fluconazole||ziprasidone and ddicomb==ziprasidone||fluconazole as same ddicomb

how can I  make it?  Thank you so much!

[VDD · Accepted solution]

you may want to use concatenation.  This link may assist you in understanding how to use concatenate.

https://stats.idre.ucla.edu/sas/modules/concatenating-data-files-in-sas/

Happy trails 

[xinyao]

Thank you so much!

[PeterClemmensen]

You could Concatenate In Alphabetical Order.

[ChrisNZ]

1. Please change the title of your post to something more meaningful

2. Did you forget some quotes in your code?

3. == is not a valid operator in SAS