Re: storing related structs

Grey Alien wrote:

Army1987 wrote:

"Grey Alien" <grey@xxxxxxxxxxxxx> ha scritto nel messaggio
news:ifOdnb3U0drIyBvbnZ2dnUVZ8qSnnZ2d@xxxxxxxxx


Army1987 wrote:

<snip></snip>

struct C {
unsigned id;
char name; /* do you mean *name, or name[LARGE_ENOUGH]? */
enum { strA, strB } type;

Why have you declared an enum here? ^ (can't see why this is needed)


The point is, you have to somehow keep track of wheter the union
contains a struct A or a struct B.

Ah, I see. I understand now. Actually it won't be necessary since the
structs themselves contain a 'type' enum

Well, you have to be /careful/, then: you can only reliably get
at that enum (IIRC) if it's either the first field in the structure
(A or B) or a member of that first field.

Safer, I would have said, to have it outside the union -- but
it depends on the /full details of the problem you're trying
to solve/, with which we have not been blessed.

--
Unshriven Hedgehog
"Our future looks secure, but it's all out of our hands"
- Magenta, /Man and Machine/

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