From: Ullrich von Bassewitz (uz_at_musoftware.de)
Date: 2003-09-30 22:57:06
On Tue, Sep 30, 2003 at 10:46:28PM +0200, Groepaz wrote:
> " Since the value of a character constant is the numerical value
> of the character in the machine's character set, there should
> be a one-to-one correspondence between characters and values. "
> [note: i think this is founded on the fact that 'a' != 'b' != 'c' etc, it may
> be true only for printable characters?]
It is true for the basic character set:
5.2.1 Character sets
[...]
3 Both the basic source and basic execution character sets shall have the
following members: the 26 uppercase letters of the Latin alphabet
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
the 26 lowercase letters of the Latin alphabet
a b c d e f g h i j k l m n o p q r s t u v w x y z
the 10 decimal digits
0 1 2 3 4 5 6 7 8 9
the following 29 graphic characters
! " # % & ' ( ) * + , - . / : ; < = > ? [ \ ] ^ _ { | } ~
the space character, and control characters representing horizontal tab,
vertical tab, and form feed.
> mmmh ok. but they are all supposed to be "non printable" (as in isprint()) ?!
> and those *are* supposed to map to unique binary values? or not? :=)
Yes, because they're part of above list.
Regards
Uz
--
Ullrich von Bassewitz uz_at_musoftware.de
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