C Programming question ...

[Kevin O'Gorman]

On Wed, Jan 7, 2009 at 8:00 AM, Ben Duncan <bend at linux4ms.net> wrote:
> On this example:
>
> struct  is_field {
>        int     f_type;
>        int     f_size;
>        int     f_offset;
>        char    f_name[MAXFIELDNAME];
> };
> typedef struct  is_field field_t;
>
>
> Is the "typedef item field_t" being allocated or just declared?
>
> I know if I do a :
>
> struct is_field {
>  ......         } My_Struct
>
> then My_Struct is allocated
>
>
> Thanks ...

The typedef does not declare a thing, but a type.  You can then use the type
to declare (and possibly allocate) things.  In this case, the new type
is field_t.
So you can use it in a declarations
    field_t fieldThing;
Which I woruld prefer to the awkward alternative
    struct is_field otherThing;

HTH

++ kevin

>
> --
> Ben Duncan - Business Network Solutions, Inc. 336 Elton Road  Jackson MS,
> 39212
> "Never attribute to malice, that which can be adequately explained by
> stupidity"
>       - Hanlon's Razor
>
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-- 
Kevin O'Gorman, PhD