Path: utzoo!attcan!uunet!yale!wald-david
From: wald-david@CS.YALE.EDU (david wald)
Newsgroups: comp.lang.c
Subject: Re: thanks for "down" answers
Message-ID: <45753@yale-celray.yale.UUCP>
Date: 15 Dec 88 17:19:04 GMT
References: <1886@loral.UUCP> <1082@goofy.megatest.UUCP>
Sender: root@yale.UUCP
Reply-To: wald-david@CS.YALE.EDU (david wald)
Organization: Yale University Computer Science Dept, New Haven CT  06520-2158
Lines: 26

In article <1082@goofy.megatest.UUCP> djones@megatest.UUCP (Dave Jones) writes:
>From article <1886@loral.UUCP>, by jlh@loral.UUCP (Physically Phffft):
>> In all his examples he used wait ( (char *) 0).
>
>From the manual:
>
>     #include <sys/wait.h>
>
>     pid = wait(status)
>     int pid;
>     union wait *status;
>
>     pid = wait(0)
>     int pid;
>
>Your instructor correctly casts the 0 to a pointer-type, which
>the manual omits.

On the other hand, it's the wrong type, and there's no guarantee that
a (char *) will work any better than an int, rather than a
(union wait *).

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David Wald                                              wald-david@yale.UUCP
						       waldave@yalevm.bitnet
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