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Path: utzoo!watmath!clyde!burl!ulysses!mhuxj!ihnp4!inuxc!pur-ee!CS-Mordred!jad
From: jad@CS-Mordred (John Dilley)
Newsgroups: net.jokes,net.flame
Subject: rot.c programs
Message-ID: <156@CS-Mordred>
Date: Fri, 5-Oct-84 19:07:19 EDT
Article-I.D.: CS-Mordr.156
Posted: Fri Oct  5 19:07:19 1984
Date-Received: Sat, 6-Oct-84 05:39:27 EDT
Organization: Department of Computer Science, Purdue University
Lines: 57


	I really can't believe someone would post a C program to rotate
	jokes.  Most thinking beings have heard of "tr", which does this
	easily in one line.  If you don't have "tr", get a real UNIX
	system.  If you don't know what "tr" is, go to the manual; go
	directly to the manual.  Do not pass the candy machine, do not
	collect your last paycheck.

	Now, if you really want to do this in a C program, here are some
	more C-like options ...

/* ----------          rot 1          ---------- */
# include	
# include	
main() {	int ch;
for (ch=getchar(); ch != EOF ; ch=getchar()) if (isalpha(ch))
	if (isupper(ch))	putchar(ch>'M'?ch-13:ch+13);
	else			putchar(ch>'m'?ch-13:ch+13);
    else			putchar(ch);
}
/* ----------          rot 1 (8 lines)          ---------- */

		Or how about ...

/* ----------          rot 2          ---------- */
# include	
# include	
main() {	int ch;
for (ch=getchar(); ch != EOF ; ch=getchar())
    !isalpha(ch)? putchar(ch):
    (isupper(ch)?putchar(ch>'M'?ch-13:ch+13):putchar(ch>'m'?ch-13:ch+13));
}
/* ----------          rot 2 (7 lines)          ---------- */

		Or better yet ...

/* ----------          rot 3          ---------- */
# include	
# include	
main() {	int ch;
for (ch=getchar(); ch != EOF ; ch=getchar()) 
     putchar(isalpha(ch)?ch>(isupper(ch)?'M':'m')?ch-13:ch+13:ch); }
/* ----------          rot 3 (5 lines)          ---------- */

	
	Now how's that for obscure?  I don't think it would win the C
	obfuscation award, but it's not something you'd give to a
	pilgrim.

				Happy Hacking ...
				--	john	  --
				a.k.a.	John Dilley
				    terrapin@purdue
				or  purdue!terrapin
				or    pur-ee!dilley

*UNIX is a trademark of AT&T Bell Laboratories