leonard@percival.UUCP (Leonard Erickson) (06/27/87)
I once mentioned self-reproducing programs to a friend. His solution was unique. (also violated the "rules" but what the hey!) In almost any Microsoft BASIC _interpreter_ this "program" will work: 10 LIST :-) :-) :-) -- Leonard Erickson ...!tektronix!reed!percival!leonard CIS: [70465,203] ...!tektronix!reed!percival!!bucket!leonard "I used to be a hacker. Now I'm a 'microcomputer specialist'. You know... I'd rather be a hacker."
debray@arizona.edu (Saumya Debray) (06/28/87)
leonard@percival.UUCP (Leonard Erickson) writes: > In almost any Microsoft BASIC _interpreter_ this "program" will work: > > 10 LIST The *really* trivial solution is the program consisting of the empty string. A "correct" compiler should compile this to produce the empty object program, which when executed will generate the empty string as output. :-), naturally! -- Saumya Debray CS Department, University of Arizona, Tucson internet: debray@arizona.edu uucp: {allegra, cmcl2, ihnp4} !arizona!debray
ark@alice.UUCP (06/30/87)
In article <1790@megaron.arizona.edu>, debray@arizona.UUCP writes: > The *really* trivial solution is the program consisting of the empty > string. A "correct" compiler should compile this to produce the empty > object program, which when executed will generate the empty string as > output. This only works in some languages. For example, the shortest Algol 60 program is begin end Fortran also prohibits empty programs, as does Cobol and many versions of Basic.
sommar@enea.UUCP (Erland Sommarskog) (07/01/87)
In a recent article debray@arizona.edu (Saumya Debray) writes: >The *really* trivial solution is the program consisting of the empty >string. A "correct" compiler should compile this to produce the empty >object program, which when executed will generate the empty string as >output. Which reminds of a Pascal compiler written at the University of Copenhagen for Univac 1100. If you forgot to give it file to compile, it answered: "No input, blockhead. Try again, this time with a program." -- Erland Sommarskog ENEA Data, Stockholm sommar@enea.UUCP