C99 feature

Whats the difference between the 2 following prototypes?

Code:

void VIDE_do_anim_lists(size_t n, struct DATA_LIST *Lists[n]);

void VIDE_do_anim_lists(size_t n, struct DATA_LIST *Lists[]);

The former, which is only allowed in C99, is indicating the size of the array being passed in. It does not in any way GUARANTEE this size - but it indicates that the size is the same as n.

The latter form, obviously, does not indicate anything about the size of the array.

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Mats