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From: knutsen@sri-unix.UUCP
Newsgroups: net.puzzle
Subject: C code?  Unreadable?  Sez who?
Message-ID: <231@sri-unix.UUCP>
Date: Sun, 18-Dec-83 22:15:14 EST
Article-I.D.: sri-unix.231
Posted: Sun Dec 18 22:15:14 1983
Date-Received: Wed, 21-Dec-83 01:38:41 EST
Lines: 22

From: Doug Landauer @ Parallel Computers Inc, Santa Cruz, CA

/*
** Here's a puzzle I made up a few years ago, for those of you who
** don't think C is the same language as APL, and for all of you
** cryptography fans.  The following "C" program has a (one-character)
** bug in it.  Fix it.  " ... and who says C code is unreadable ... "?
** (small hint (rot13)):  Abj (Qrprzore) vf gur evtug gvzr bs gur lrne.
*/
char*l11[]={"Pp#ujh$","Gkuwy","Tgfssj","Ujlvi","Gqxvyn","Gkixm",
"Tk{xm","Tgyiszo","Fkjlyn","Okqxm","Ugqxm","Fnhzjt{p","Uyhpkzo",
"!ec|$ph#Djumxzti|*n{#utxi%mqyi%hcyi%uq#ng\r",
"!b\"qcuxwokon*jp#b\"qgdv%uthi3\13\13","!uyr$Gthrhn'igqw",
"!ujuij&uwuxqk'eqyix2\13","!gqxv%dcopntn(ckuhx2","!gkyi%hqohjt'skqkx2\13",
"!tk{$hghwj&b/mc|msm3","!tgyis&tydrx&b/tylqrouo5\13","!fkjly&nclhx&b/nkoontn4",
"!okqi%mcgmjy'ecqgntn4\13","!ugq$mquhx&b/mgdtntn4","!fnhzjt'qksiwy'qksmsm3\13",
"!uyhp{k'etxqrky{)etxqrouo5","!bpg",0};l1l(){char*ll1,**lll,O00;for(lll=l11;
*lll;lll++)for(ll1= *lll,O00=0;++ O00**ll1; ll1++){*ll1+=O00;if(*ll1<(111
>>1)+11)O00=0;}}O0O(O00){printf(l11[O00]);}main(){int ll1,lll;l1l();for(ll1=
-1;ll1<11;ll1++){O0O(0); O0O(1+ll1+1); O0O(11111/0111/11);
for(lll=ll1;!(lll<0);lll--)O0O(lll+1111/0111);if(ll1>=0)O0O((11111
/0111/11)<<1);O0O((1+11111/0111+1)/11);}}