Re: [midatlanticretro] Stupid C question/Altair32
My bad, you actually are right. I don't remember exactly who it was who told me that it's copied unless you pass a reference, but that's wrong - a and *a are technically the same thing, but just because the compiler replaces it for you.
However, since by typing a or a or any length you're still just passing a reference (a pointer to the first element), it doesn't make any sense to write a; you might as well write the correct form *a. This is evidenced by the fact that my other answer fixed the problem.
Russell Frank Burst Development
Sridhar Ayengar wrote:
M. Frank wrote:
> You do realize that when you pass an array that way, using a as a
> param in the definition of the function, that the entire array is copied
> in memory, right? It's completely nonsensical to pass an uninitialized
> array like that, you're essentially making a copy of uninitialized
> memory, then using it, then freeing it. Might as well just malloc your
> own work array in the function, or define the work array right there as
> it'll be freed as soon as it goes out of scope.
Arrays aren't passed by value in C though, right? So you'll just be
passing a reference to an uninitialized memory location, not copying an
uninitialized memory location.