qsort() - HELP

[Vasco Pedro]

In article <5916 at ozdaltx.UUCP> root at ozdaltx.UUCP (root) writes:
>
>	   void qsort(base, nel, width, compar)
>	   char *base
>	   unsigned nel, width
>	   int (*compar)()
>
>   Is base supposed to be an array?
>   nel & width are self-explanitory
>   What is compar() looking for or how is it assigned?
>

Yep, 'base' is supposed to the be the (char *)base of the array you
intend to sort. 'nel' is the number of elements to be sorted and
'width' the sizeof(element_to_sort).
'compar' is a pointer to int function that must behave like
strcmp(s1,s2) a that will be called by qsort(...), for each two
elements that will be compared, ie, if elements 2 and 4 need be
compared there will be a call of the form:

		compar(base+(2-1)*width, base+(4-1)*width).

If is strings you want to sort might just call (I think):

		qsort(array,nel,width,strcmp).

Sorry for the inaccuracies and hope this helps.
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