What does this (unusual?) structure definition mean?
Question posted by: Frederiek
(Guest)
on
July 11th, 2006 04:15 PM
Hi,
What exactly does the following code mean? More specific, what are the
colons for? Is this some kind of way to initialize the structure
members?
struct somestruct
{
unsigned char a:1;
unsigned char b:1;
unsigned char c:1;
};
Regards,
Frederiek
3
Answers Posted
Frederiek wrote:
Quote:
Originally Posted by
Hi,
>
What exactly does the following code mean? More specific, what are the
colons for? Is this some kind of way to initialize the structure
members?
>
struct somestruct
{
unsigned char a:1;
unsigned char b:1;
unsigned char c:1;
};
>
Regards,
>
Frederiek
Look in your favorite reference for bitfields.
Frederiek wrote:
Quote:
Originally Posted by
Hi,
>
What exactly does the following code mean? More specific, what are the
colons for? Is this some kind of way to initialize the structure
members?
>
struct somestruct
{
unsigned char a:1;
unsigned char b:1;
unsigned char c:1;
};
>
Regards,
>
Frederiek
It's declaring a bit field.
-Brian
Frederiek <fd_news@hotmail.comwrote:
Quote:
Originally Posted by
What exactly does the following code mean? More specific, what are the
colons for? Is this some kind of way to initialize the structure
members?
>
struct somestruct
{
unsigned char a:1;
unsigned char b:1;
unsigned char c:1;
};
It's called a bit-field. a, b and c are each one bit (that is what
the number after the colon means).
regards
--
jb
(reply address in rot13, unscramble first)
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