hp35s tell if variable is vector or complex

[Eddie W. Shore]

This would require user input, but maybe can help:

VIEW var
SF 10
"COMPLEX? Y=1, N=0"
CF 10
INPUT I // or other dummy variable
x=0?
GTO (label-line number) // If var isn't complex
GTO (label-line number) or next command if var is complex

I was going to suggest using the square root key, but using the square root key on a complex number on the 35S causes an error (silly in IMHO). I have no idea how to mitigate error messages.