[OCLUG-devel] Single Element Structures

[Doug Jolley]

Hi --

I am a real newbie to C and in way over my head on a project that I'd really 
like to get to work. I'm thinking that the thing to do may be to try to get 
some help at the next OCLUG meeting; but, in the meantime I'm going to try 
to muddle along as best I can.

To continue my muddling, I have encountered the following type definition:

typedef struct {
node* head;
} llist;

My question is: Why would anyone go to the trouble of defining a structure 
with only one element in it? I thought the essence of structures was that 
they contained a collection of dissimilar data elements. I'm sure the guy 
that did this had a very good reason and I realize that I'm asking a 
question without giving a lot of context; so, from what I've given there may 
be no answer. Anyway, if an answer may be deduced from what I've given, I'd 
love to hear it. Thanks for any input.

... doug
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