whats the use of unsigned char

Seebs <usenet-> writes:
> On 2009-11-06, arnuld <> wrote:
[...]
>> char a = 'A';
[...]
>> and hence /char a/ will actually be stored as number 65, not as 'A'.
>
> Right.

Only half right.

Assuming an ASCII-based system (that includes any of the numerous
character sets derived from ASCII), the value stored in a can be
written either as 65 or as 'A'. Both expressions have the same value
and type (yes, character constants in C are of type int, for
historical reasons).

The value stored in a is a number, more specifically an integer. That
value is written as 65. It can also be written as 'A'.

The value stored in any char object is a small integer. Such a value
is often *used* to represent a character value, but it needn't be.

--
Keith Thompson (The_Other_Keith) kst- <http://www.ghoti.net/~kst>
Nokia
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"

Keith Thompson

On 2009-11-06, Keith Thompson <kst-> wrote:
> Only half right.

Yeah. I was trying to agree that so far as C is concerned, it's just a 65,
it doesn't matter whether or not that happens to match a particular letter.

The OP's confusion was apparently contagious, though.

-s
--
Copyright 2009, all wrongs reversed. Peter Seebach / usenet-
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Seebs