jv@mhres.mh.nl (Johan Vromans) (10/02/88)
From article <7656@boring.cwi.nl>, by tromp@cwi.nl.UUCP (John Tromp): > Posting-number: Volume 4, Issue 110 > Submitted-by: "John Tromp" <tromp@cwi.nl.UUCP> > Archive-name: mazemaze Compile and run on a BSD4.3 system (Gould Powernode 6000 / UTX2.0): [lines truncated on behalf of mailers]: } ._._._._._._._._._._._._._._._._._._._._._._._._._._._._. } | ._| . . ._| | |_._._. . ._|_._._._._. ._|_. ._|_._. ._| } | ._|_| |_. | | | | ._._|_._|_._. . |_. | | | ._._| |_._. } |_._._._. | ._|_. ._._._. | | ._. |_._. . | ._._| |_. | . } | | . |_._| . ._._._| ._._. ._._| | | |_| . | |_. . ._|_| } |_._|_._._._|_._._._|_|_._._._|_._|_._._._|_._._._|_._._. Compile and run on a System V.3 system (NatSem 32332 based): [lines truncated on behalf of mailers]: } ._._._._._._._._._._._._._._._._._._._._._._._._._._._._. } | | | | | | | | | | | | | | | | | | | | | | | | | | | | | } | | | | | | | | | | | | | | | | | | | | | | | | | | | | | } | | | | | | | | | | | | | | | | | | | | | | | | | | | | | } | | | | | | | | | | | | | | | | | | | | | | | | | | | | | } |_._._._._._._._._._._._._._._._._._._._._._._._._._._._. Compile on HP9000/320 with HP-UX 5.3: } "x.c", line 7: compiler error: register allocation error Compile on VAX/VMS 4.5 with VAX-C 2.1: } %CC-E-NOTPOINTER, Address-valued expression not found. } At line number 5 in MH$ROOT:[JV]X.C;1. } } %CC-I-NOBJECT, No object file produced. } At line number 7 in MH$ROOT:[JV]X.C;1. } } %CC-I-SUMMARY, Completed with 1 error(s), 0 warning(s), and } 1 informational messages. } At line number 7 in MH$ROOT:[JV]X.C;1. Amazing, isn't it? -- Johan
ip@hammer.me.toronto.edu (10/04/88)
In article <2456@mhres.mh.nl> jv@mhres.mh.nl (Johan Vromans) writes: >From article <7656@boring.cwi.nl>, by tromp@cwi.nl.UUCP (John Tromp): >> Posting-number: Volume 4, Issue 110 >> Submitted-by: "John Tromp" <tromp@cwi.nl.UUCP> >> Archive-name: mazemaze > >Compile on HP9000/320 with HP-UX 5.3: > >} "x.c", line 7: compiler error: register allocation error > >Compile on VAX/VMS 4.5 with VAX-C 2.1: > >} %CC-E-NOTPOINTER, Address-valued expression not found. >} At line number 5 in MH$ROOT:[JV]X.C;1. >} >} %CC-I-NOBJECT, No object file produced. >} At line number 7 in MH$ROOT:[JV]X.C;1. >} >} %CC-I-SUMMARY, Completed with 1 error(s), 0 warning(s), and >} 1 informational messages. >} At line number 7 in MH$ROOT:[JV]X.C;1. > > >Amazing, isn't it? >-- > Johan To add to the list, On a SUN3/60: % cc t.c % a.out core dump % Yup, I have to agree, it're really amazing. bevis -- Bevis Ip <ip@me.utoronto.ca> | CSNET : ip@me.toronto.edu University of Toronto | BITNET: ip@me.UTORONTO Dept. of Mechanical Engineering | ARPA : ip%me.toronto.edu@relay.cs.net Toronto, Ont. Canada | UUCP : {allegra,decwrl,decvax}!utcsri!me!ip VOICE : (416) 978-6443 | {pyramid,uunet}!utai!me!ip
bobmon@iuvax.cs.indiana.edu (RAMontante) (10/06/88)
...runs on an MSDOS box under TurboC, but the random isn't random and it's a very regular "maze". The code's kind of cute, though. -- -- bob,mon (bobmon@iuvax.cs.indiana.edu) -- "Aristotle was not Belgian..." - Wanda
jfh@rpp386.Dallas.TX.US (The Beach Bum) (10/06/88)
I changed the `27' on the bottom line to an `11'. This reflects rand()'s
return numbers in the range 0 .. 32767. The comparision of rand() against
6 << 27 never flew ...
I also added a call like srand (getpid ()). This produced a more random
maze but didn't look as pretty.
- John.
--
John F. Haugh II (jfh@rpp386.Dallas.TX.US) HASA, "S" Division
"Why waste negative entropy on comments, when you could use the same
entropy to create bugs instead?" -- Steve Eliasralph@rtech.rtech.com (Ralph Harnden) (10/06/88)
In article <2456@mhres.mh.nl> jv@mhres.mh.nl (Johan Vromans) writes: >From article <7656@boring.cwi.nl>, by tromp@cwi.nl.UUCP (John Tromp): >> Posting-number: Volume 4, Issue 110 >> Submitted-by: "John Tromp" <tromp@cwi.nl.UUCP> >> Archive-name: mazemaze >... >Compile and run on a System V.3 system (NatSem 32332 based): >[lines truncated on behalf of mailers]: >} ._._._._._._._._._._._._._._._._._._._._._._._._._._._._. >} | | | | | | | | | | | | | | | | | | | | | | | | | | | | | >} | | | | | | | | | | | | | | | | | | | | | | | | | | | | | >} | | | | | | | | | | | | | | | | | | | | | | | | | | | | | >} | | | | | | | | | | | | | | | | | | | | | | | | | | | | | >} |_._._._._._._._._._._._._._._._._._._._._._._._._._._._. >... Similar results on my 3B1. Problem is rand(3C) returns int between -2**15+1 and 2**15-1, but the code expects int between 0 and 2**31-1. Change rand() to lrand48(). Or change "6<<27<rand()" to "6<<11<abs(rand())". May work 4U. -- "People will do anything for a potato" {amdahl, mtxinu, ptsfa, sun}!rtech!gusano!ralph ralph@gusano@rtech.com
ralph@rtech.rtech.com (Ralph Harnden) (10/06/88)
In article <21617.1988Oct3.14:18:27@hammer.me.toronto.edu> ip@me.toronto.edu (Bevis Y W Ip) writes: >In article <2456@mhres.mh.nl> jv@mhres.mh.nl (Johan Vromans) writes: >>From article <7656@boring.cwi.nl>, by tromp@cwi.nl.UUCP (John Tromp): >>> Posting-number: Volume 4, Issue 110 >>> Submitted-by: "John Tromp" <tromp@cwi.nl.UUCP> >>> Archive-name: mazemaze >> >... >To add to the list, On a SUN3/60: > >% cc t.c >% a.out >core dump >% Did you type a number when the program attempted to read from stdin? It's not on your bug description. Try the program again, and when it reads, enter a nice, big number. -- "People will do anything for a potato" {amdahl, mtxinu, ptsfa, sun}!rtech!gusano!ralph ralph@gusano@rtech.com
res@cbnews.ATT.COM (Robert E. Stampfli) (10/08/88)
>In article <751@mcrware.UUCP> jejones@mcrware.UUCP (James Jones) writes: >>I include the source here for reference--it's very short: > >char*M,A,Z,E=40,J[40],T[40];main(C){for(*J=A=scanf(M="%d",&C); >-- E; J[ E] =T >[E ]= E) printf("._"); for(;(A-=Z=!Z) || (printf("\n|" >) , A = 39 ,C -- >) ; Z || printf (M ))M[Z]=Z[A-(E =A[J-Z])&&!C >& A == T[ A] >|6<<27<rand()||!C&!Z?J[T[E]=T[A]]=E,J[T[A]=A-Z]=A,"_.":" |"];} ^^^^^ > When I tried compiling this, it didn't work, generating mazes which were always columnar except for one horizontal row at the bottom. However, by changing the "6<<27" to "4<<11" I found it worked for my "big-endian" type machines. The rand() function returns a number in the range 0 - 2^15-1 on my systems, making the program always fail the comparison, as originally written. Other systems may have slightly different rand() functions, I suppose. Regardless, this is one jewel of a program. Hope this helps someone. Rob Stampfli att!cbnews!res
maujp@warwick.ac.uk (Steven Shipway) (10/10/88)
Well, I compiled it on a Sun 3/160 and on a Gould, and on a Sun4, and every time it worked perfectly. I thought it was an interesting diversion, especially if you deliberately obfuscate it a bit more and then challenge someone to decode it... -Steve maujp@uk.ac.warwick.cu ...!uunet!mcvax!ukc!warwick!maujp ----------------------------------------------------------------------------- #include <quote.h>