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From: pilotti@telesoft.UUCP (Keith Pilotti @shine)
Newsgroups: net.lang.c
Subject: Re: casts to (void)
Message-ID: <168@telesoft.UUCP>
Date: Wed, 31-Jul-85 04:25:41 EDT
Article-I.D.: telesoft.168
Posted: Wed Jul 31 04:25:41 1985
Date-Received: Sat, 3-Aug-85 05:22:38 EDT
References: <11@brl-tgr.ARPA> <>
Reply-To: pilotti@telesoft.UUCP (Keith Pilotti @shine)
Organization: TeleSoft, SanDiego CA
Lines: 19

In article <> mjs@eagle.UUCP (M.J.Shannon) writes:
>>     Why should a cast to (void) be necessary in a statement like
>>  (void) printf("foo\n");
>>...
>The cast is necessary because printf() returns a value.
>...

    The use of (void) also points out the fact that the programmer
    *intentionally* is ignoring the return value of the function.

    At the very least it is useful documentation.

    /+\ Keith
    ________________________________________________________
    KEITH F. PILOTTI -- TeleSoft         (619) 457-2700 x172
                        10639 Roselle St, SanDiego, CA 92121

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