>/home/jk>ksh -c "echo /c*" 
>/c*
>/home/jk>csh -c "echo /c*"
>echo: No match.

>Who is right? sh/ksh or csh? Is this an error?

sh/ksh are correct.  csh may also be correct, depend on the claimed 
semantics.  I haven't used csh (willingly) in so many years I have 
no recollection of its claimed semantics.

--sjg