Why isn't argv[argc]==(char *)0 ?

[Conor P. Cahill]

In article <547.nlhp3 at oracle.nl>, bengsig at oracle.nl (Bjorn Engsig) writes:
> The execv family of system calls all have  char *argv[]  as their second
> parameter, and you are required to put an endmarker as  (char *)0  in it.
> On the other hand, main has  int argc  and  char *argv[]  but here, the
> endmarker has disappeared.  Has it ever been considered to change the defi-

argv has always had an endmarker.  Older versions had the convention 
that argv[argc] == -1.  Currently under System V argv[argc] = (char *) 0.



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