Re: Struct assignment


"Flash Gordon" <spam@xxxxxxxxxxxxxxxxxx> wrote in message
news:hhfil4xnvp.ln2@xxxxxxxxxxxxxxxxxxxxxxxxxx
Grey Alien wrote, On 30/06/07 17:43:
If I have the ff struct:

struct A
{
unsigned int i;
char s[LONG_ENOUGH];
} a, b;


And use them in code like this:

a.i = 42 ;
strcpy(a.s,"test");

b.i = 100 ;

b = a ;

at this point, a (bitwise?) copy of a is made to b.

It is not a bitwise copy, it is a copy of all the elements in the struct.

Question is:

1). is b.s now ptr to a.s ? (I think so)

Since b.s was not defined as a pointer, what makes you think an assignment
could magically transform it from being an array in to being a pointer?
You need to read section 6 of the comp.lang.c FAQ at http://c-faq.com/
specifically the questions dealing with whether pointers and arrays are
the same thing.

Its easy to see where the confusion comes from. There are situations where
pointers degenerate into pointers , the OP probably had that in mind



.

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