break, continue, return, goto (net.religion.c)

[Isaac Dimitrovsky]

[]
> Can anyone suggest a recoding of the following example without using
> multiple returns?  Of course it can be done, but in a clearer, simpler
> way?  Remember, this is exactly the same as using loops with continue.
>
> core(file)
> char	*file;
> {
>	if ((fd = open(file, O_RDONLY)) < 0) {
>		perror(file);
>		return;
>	}
>	if ((n = read(fd, &u, sizeof u)) == 0) {
>		puts("zero length");
>		return;
>	}
>	if (n < sizeof u) {
>		puts("too small");
>		return;
>	}
>	if (BADMAG(u.u_exdata.ux_magic)) {
>		puts("not a core dump");
>		return;
>	}
>
>	/* process core dump */
>	printf("%d/%d %s", u.u_uid, u.u_gid, ctime(&u.u_start));
>	printf("$ %s\n", u.u_comm);
>	/* ... etcetera */
> }

core(file)
char	*file;
{
	if ((fd = open(file, O_RDONLY)) < 0)
		perror(file);
	else if ((n = read(fd, &u, sizeof u)) == 0)
		puts("zero length");
	else if (n < sizeof u)
		puts("too small");
	else if (BADMAG(u.u_exdata.ux_magic))
		puts("not a core dump");
	else {
		/* process core dump */
		printf("%d/%d %s", u.u_uid, u.u_gid, ctime(&u.u_start));
		printf("$ %s\n", u.u_comm);
		/* ... etcetera */
	}
}

Oh no!!!
Not the straightjacket again!!!
Gaaahhhhhrrgh....

Isaac Dimitrovsky
allegra!cmcl2!csd2!dimitrov   (l in cmcl2 is letter l not number 1)
251 Mercer Street, New York NY 10012     (212) 674-8652

... Hernandez steps in to face ... Orl ... HERchiiiser ... and it's a liiine
driive, deeeeep to the gap in left center ...	- Bob Murphy, Voice of the Mets