Character classifications

Article View: comp.std.c

Article #4291

#4291

From: Ian Cargill
Date: Fri, 27 Oct 1995 18:49

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The description of isupper says:

 The isupper function tests for any character that is an
 uppercase letter or is one of an implementation-defined set
 of characters for which none of iscntrl, isdigit, ispunct,
 or isspace is true.

and islower has similar wording.

By my reading of this, a character could be both upper-case and 
lower-case at the same time.  Questions are:

1. Am I missing something?

2. Is this deliberate?  I wouldn't have thought any language 
   would have characters which are both upper and lower case. 


-- 
Ian

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Path: arc1-ca.pugleaf.net!mail2news.demon.co.uk!soliton.demon.co.uk
From: Ian Cargill <ian@soliton.demon.co.uk>
Newsgroups: comp.std.c
Subject: Character classifications
Date: Fri, 27 Oct 95 18:49:39 GMT
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