On Saturday, 29 April 2017 04:34:38 UTC+10, wrote:
Using E for zero. =IF(C2="E",(O2),(O2)) does not calculate correctly. Substituting a zero, formula will work OK. Using #'s all is OK.
Can I write a formula using "E". When I use zero's I have to have them show in places were I don't want them to show.

Your formula says to choose O2 with true or false, how can you tell if it's working?
I just tried it in Excel 2013 and initially had the same problem but then realised I didn't have the E in C2.. Change your formula to choose a different result cell for true/false

Ron