From: jared jennings <jjenning@...>
Date: 2002-12-27T18:37:39+09:00
Subject: Re: putc ?.

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On Fri, 27 Dec 2002 17:10:05 +0900
zhoujing@comp.nus.edu.sg (TOTO) wrote:

> Can someone explain:
> 
> putc ?.
> 
> and
> 
> putc "\."?
> 
> It seems to me that they have the same effect. But I don't quite
> understand the first one.
> 
> Thanks in advance.
> 

?. is a character constant, like '.' in C. "\." is a one-character string containing a '.' - so given 
foo = ?.
bar = "\."
baz = "."

bar == baz (escaping normal characters with \'s inside "" does nothing to them)
bar[0] == baz[0] == foo == ?. == 46

All the character constants start with ?, so e.g. ?A == 65.
(you can't use '' for character constants since it's already used for strings)


-- 

Doubt is a pain too lonely to know that faith is his twin brother.
- Gibran Khalil Gibran

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