Date: 21 Jul 2001 17:36:59 +0200 From: Dag-Erling Smorgrav <des@ofug.org> To: Damien Tougas <damien@carroll.com> Cc: chat@FreeBSD.ORG Subject: Re: C newbie needs help with kqueue Message-ID: <xzp3d7quwdg.fsf@flood.ping.uio.no> In-Reply-To: <2042320000.995728574@sprig.tougas.net> References: <2042320000.995728574@sprig.tougas.net>
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Damien Tougas <damien@carroll.com> writes: > #include <stdio.h> > #include <unistd.h> > #include <sys/types.h> > #include <sys/event.h> > #include <sys/time.h> Wrong header ordering; <sys/types.h> always comes first, followed by other sys headers in alphabetical order, followed by standard headers in alphabetical order. > int main(int argc, char *argv[]) { int main(int argc, char *argv[]) { > if ((fp = fopen("/var/log/messages", "r")) == NULL) { > perror("Cannot open file\n"); > return -1; Don't use perror(3). Never return from main(), use exit(3) instead (err(3) in this case) to flag it as an exit point. Valid exit codes are 0-255 only. > } Incorrect brace placement. > if (kq = kqueue() < 0) { > perror("Cannot create kqueue"); > } If you were using the right compiler options (i.e. at least -Wall), the compiler would warn you that the < operator has higher precedence than the = operator. DES -- Dag-Erling Smorgrav - des@ofug.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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