Ahhh, thank you. I knew I was missing something obvious. Actually, I have
a book, it's just not great on explaining structures. You wouldn't know it
from my question, but I know C, I just haven't used it for 10 years, so I'm
very rusty.
Jamie
"Richard Burmeister" <[EMAIL PROTECTED]> wrote in message
news:29167@palm-dev-forum...
>
> From: "Jamie Macleod" <[EMAIL PROTECTED]>
> Subject: sizeof(DateType) == 2 ?
>
> > Can someone explain why sizeof(DateType) gives me 2? DateType is a
> > structure declared as 3 UInt16 values, and of course if I do a
> > (sizeof(UInt16) * 3) I get 6. Shouldn't I be getting 6 for DateType?
>
> DateType is not a structure with 3 UInt16s. It is a single UInt16 used as
a
> bit field (16 bits, 2 bytes).
>
> typedef struct {
> UInt16 year :7;
> UInt16 month :4;
> UInt16 day :5;
> } DateType;
>
> 7 bits are used for the year, 4 bits for the month, and 5 bits for the
day.
>
> You might want to pick up a book on C.
>
>
>
>
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