Truth-machine
A truth-machine is a simple program type, devised by Keymaker to be a program that is easy, most of the time, to implement in a language, and useful for testing or showcasing the following capabilities of a language:
- input
- output
- decision
- repetition
- termination
Essentially, a truth-machine works like this:
- Ask for input.
- If the input is 0:
- Output 0.
- Terminate program.
- Whereas if the input is 1:
- Repeat infinitely:
- Output 1.
- Repeat infinitely:
In languages without input capabilities, a truth-machine might instead have a simple way for the user to modify a variable or other structure in the beginning of the program, and the machine would do its decision based on that. A truth-machine in a language without output capabilities might simply either terminate or not terminate, based on the the input. The essence of a truth-machine is that some part of it, whether in the memory the program is using or in the program's code, may be either A or B, and the program contains the capacity (namely, program code) to do either of two possible things: in case of A the machine/program will perform an infinite loop, in case of B it will quit running. An alternative to output could be placing a 0 in memory once, or start filling the (infinite) memory with 1s.
Contents
- 1 Implementations
- 1.1 0815
- 1.2 2-ill
- 1.3 A colon semicolon
- 1.4 Alight
- 1.5 ALPL
- 1.6 Aubergine
- 1.7 Beam
- 1.8 Beeswax
- 1.9 Befunge-93
- 1.10 Benul
- 1.11 beta-Juliet
- 1.12 Betterave
- 1.13 Binary lambda calculus
- 1.14 BIT
- 1.15 BitChanger
- 1.16 Bitoven
- 1.17 boolfuck
- 1.18 brainfuck
- 1.19 brainfuck--
- 1.20 brainfunct
- 1.21 Bruijndejx
- 1.22 Bueue
- 1.23 Burlesque
- 1.24 Carriage
- 1.25 Cfluviurrh
- 1.26 C-INTERCAL
- 1.27 CJam
- 1.28 Daoyu
- 1.29 dc
- 1.30 Definer
- 1.31 DigFill
- 1.32 Drive-In Window
- 1.33 DROL
- 1.34 DStack
- 1.35 Duck Duck Goose
- 1.36 Emmental
- 1.37 FALSE
- 1.38 FerNANDo
- 1.39 ><>
- 1.40 Foobar and Foobaz and Barbaz, oh my!
- 1.41 Forobj
- 1.42 Forte
- 1.43 FOS-X
- 1.44 Fueue
- 1.45 FurryScript
- 1.46 Gaot++
- 1.47 Gentzen
- 1.48 Glass
- 1.49 Glypho
- 1.50 GolfScript
- 1.51 GridScript
- 1.52 Hollow
- 1.53 Integ
- 1.54 IRP
- 1.55 ISCOM
- 1.56 Isolated
- 1.57 itflabtijtslwi
- 1.58 Jolverine
- 1.59 Jug
- 1.60 Karma
- 1.61 KimL
- 1.62 Kipple
- 1.63 Kkipple
- 1.64 L00P
- 1.65 Linguine
- 1.66 LOCK
- 1.67 Madbrain
- 1.68 Malbolge
- 1.69 Malbolge Unshackled
- 1.70 MarioLANG
- 1.71 Math++
- 1.72 Maze
- 1.73 Microscript
- 1.74 Minks
- 1.75 MIX (Knuth)
- 1.76 Muriel
- 1.77 Nhohnhehr
- 1.78 NOR
- 1.79 NULL
- 1.80 Numeric Topline
- 1.81 Ouroboros
- 1.82 OOLANG
- 1.83 PATH
- 1.84 pb
- 1.85 pbrain
- 1.86 Piet
- 1.87 PoGo
- 1.88 Pyth
- 1.89 Q-Ref
- 1.90 QWOP
- 1.91 Recurl
- 1.92 Redivider
- 1.93 ResPlicate
- 1.94 REVER
- 1.95 REVERSE
- 1.96 ROOP
- 1.97 Sceql
- 1.98 Self-modifying Brainfuck
- 1.99 Ser2
- 1.100 Shuffle
- 1.101 SICKBAY
- 1.102 Simplefunge
- 1.103 Slashist
- 1.104 Slim
- 1.105 SMITH
- 1.106 Core SNUSP
- 1.107 Splinter
- 1.108 Squishy2K
- 1.109 Stackstack
- 1.110 StaPLe
- 1.111 Starry
- 1.112 Stlang
- 1.113 Super Stack!
- 1.114 Suxesol
- 1.115 SyL
- 1.116 Tag
- 1.117 Telegram
- 1.118 This=That
- 1.119 Thue
- 1.120 Trigger
- 1.121 Underload
- 1.122 Unlambda
- 1.123 Urn
- 1.124 Verbose
- 1.125 Wheat
- 1.126 When
- 1.127 Whenever
- 1.128 Whitespace
- 1.129 x-D
- 1.130 XRF
- 1.131 Yboy
- 1.132 Ypsilax
- 1.133 ZOMBIE
- 2 See also
Implementations
0815
|~}:i:%^:i:
2-ill
@ @
@@ @
@
# # #
@@
$ @
@ @ @
@ @
A colon semicolon
j:1;i:l;?:l:=:j:2;p:j;g:3
Alight
begin;var i; inp i; skip i; turn right;; out 1; turn right;
ot t
uh u
tg r
i n
0r
; r
en i
nr g
du h
;t t
;thgir nrut ;
ALPL
For the sake of simplicity, this program operates on bits instead of chars.
``?``=l[x.``1xx]l`00
Aubergine
=Ao=bi=oA=aA-ai-ai-ai-ab-a1:Ba=ib
Beam
rS v >@<) @
Beeswax
{p'<T_
>{d
Befunge-93
&#::_.@#
Another variant, shorter but leaks stack:
&>:.:_@
Benul
00 00 00 07 00 00 00 00 07 07 07 07 00 07 07 00 07 07 00 07 07 00 07 07 00 07 07 00 07 07 00 07 07 00 07 07 00 00 07 00 00 00 07 00 00 00 00 07 00 00 00 00 00 07 07 07 00 07 07 07 00 00 00 07 07 07 00 07 07 07 00 00 00 07 07 07 00 07 07 07 00 07 07 07 00 00 07 07 07 00 00 00 00 07 00 00 07 00 00 00
beta-Juliet
beta-Juliet does not have conventional I/O, but can model input and output as events.
event AZeroIsOutput; event AOneIsOutput; event AZeroIsInput, causes AZeroIsOutput; event AOneIsInput, causes AOneIsOutput, causes AOneIsInput.
Betterave
?-1:[.1|1]!.0
Binary lambda calculus
010001101000000110000000010110111001011110000010010111111011111011110
BIT
LINE NUMBER ZERO CODE READ GOTO ONE LINE NUMBER ONE CODE GOTO ONE ZERO IF THE JUMP REGISTER IS ZERO GOTO ONE ONE IF THE JUMP REGISTER IS ONE LINE NUMBER ONE ZERO CODE PRINT ZERO LINE NUMBER ONE ONE CODE PRINT ONE GOTO ONE ONE
BitChanger
<<<<< <<<<< <<}<} }}}}} }}}}} <<<<< <<< }}}}} }}} [ <<<<< <<<<< <}<} }}}}} }}}}} <<<<< <<<<< }}}}} }}}}} ] <<<<< <<<<< <}
Bitoven
a?[aa-b+c+]d++++++[dd-b--------]c![bc!]
boolfuck
,>,>,>,>,>,>,>,<<<<<<< [;>;>;>;>;>;>;>;<<<<<<<] ;>;>;>;>;>;>;>;
brainfuck
,[.>+<-[-[>]<++<-]>]
brainfuck--
.>>>>>>>.[.]
brainfunct
////////////////////////////////////////////////.@/,.@
Bruijndejx
Using 8-bit ASCII:
dis=[*0 0?]; no=*/./././.\.\././; yes=yes\./././.\.\././; main=*yes no?dis.dis.dis.dis.dis.dis.dis;
Bueue
x009
(x being either 1 or 0).
Burlesque
ri{^^}w!
If STDIN is not on the stack replace ri with either 0 or 1.
Carriage
111-@1\11-~!$$11+1+1+1+\1+1+1+1+1+1+@11-~!$$1-
An explanation is available.
Cfluviurrh
a< b=8 b*=6 z@=N z?a=b :Y a> z@=Y z?1=1 :N a>
In addition to fulfilling the tasks of a truth-machine, this program will experience mild satisfaction if the input is '0', and if the input is '1', it will feel extreme happiness (once) followed by mild distrust (an infinite number of times.)
C-INTERCAL
This program probably also works in CLC-INTERCAL.
DO WRITE IN .1 DO COME FROM .1 (1) DO READ OUT .1 PLEASE GIVE UP
CJam
ri{_p}h;
Daoyu
$$$;
(
*[=[*] *S=S=S=S=S
( !) =S*S=S=S
(/!) =! *S*S=S=S
)
! =[=] *S=S=S=S
((!)) =[=] *S=S=S=S
(!) =[=] *S=S=S=S
(!)!
$$$$
((/(/(/(/([]!/[])))))
/(((([]!/[]!)/([]!/[]!))/(([/[]!]!/([]/[]))/([/[]!]!/[/[]]!)))
/((([/[]!]!/[/[]!])/(([]/[])/([])))/((([])/([]))/(([])/([]/[]!))))))
((/(/(/(/#))))
SSSSSSS
dc
?[pd;xx]d1:xx
Definer
There is no input in Definer; the line under constants must be either 0 = 0 for 0-input or 0 = 1 for 1-input. Below, 1-input is used.
Output can only occur if the program halts; in the case of 1-input, this program will produce an ever-expanding string of '1's.
constants: 0 = 1 definitions: 1 = 11 code: 0
DigFill
(&n*)n^n~n(&n~s)s~s
Drive-In Window
Hi, welcome to Spill_The_Beans. Here is a menu. Vodka: $50 Here are your sides. Truth Serum: $2 May I take your order? OK, how much money should Person 1 have? Let's just do this until Person 1 has no more money! Person 1 would also like the Vodka, hold the Truth Serum. Let's just do this until Person 1 has no more money! Person 1 will pay for his order! Person 1 has no more money! Person 1 has no more money! Person 1 would also like the Vodka, hold the Truth Serum. Person 1 will pay for his order! Just wait while we decide... OK, that will be $48. Thanks for coming!
DROL
nj0002oxk"0001xw0001o
DStack
04KKCKT
Duck Duck Goose
duck duck duck goose duck duck duck duck duck duck duck goose duck duck duck duck duck duck duck duck duck duck duck duck duck duck duck duck duck duck goose duck duck duck duck duck duck duck duck duck duck duck duck duck duck duck duck duck duck duck duck goose duck duck duck duck duck duck duck duck duck goose duck duck duck duck duck duck duck duck goose duck duck duck duck duck duck duck duck duck duck goose duck duck duck duck duck duck duck duck duck duck duck duck duck duck goose duck duck duck duck duck duck duck duck goose duck duck duck duck duck duck duck duck duck duck duck goose duck duck duck duck duck duck duck duck duck duck duck goose duck duck duck duck duck duck goose duck duck duck duck duck duck goose duck duck goose duck duck duck duck duck duck duck duck duck duck goose duck duck duck duck duck goose duck duck duck duck goose
Emmental
;#58#46#58#63#49! ,:.:?
FALSE
^48-[[$1.!]$!]?0.
FerNANDo
r 0 0 1 1 0 0 0 a a 0 0 1 1 0 0 0 a a
><>
i68*-?!v1>:!n<
>0n;
Foobar and Foobaz and Barbaz, oh my!
? and 255 and 0, oh my. 2 and 2 and ., oh my... 5 and 5 and 5, oh my... 0 and 0 and ., oh my. 3 and 3 and 3, oh my...
Forobj
n>n["0"d][[,"1"d\],[]$n"1"=?]$n"0"=?
Forte
10 GET 5 20 LET 40 + ((5 - 48) * 10) = 30 40 PUT 5 : END 50 LET 40 = 29 60 LET 61 = 60 + 61 61 PUT 5 : LET 60 = 61 + 1
FOS-X
This checks for the press of the 1 key on the keyboard as input for 1. All else assumed 0.
01 05 05 05 05 05 01 04 06 06 01 04 04 3B 04 21 2C 23 01 17 34 13
Fueue
[[)[~~~~()+1])])][[)$-----~1-[~:)~)[)[~:)~)]~:]:]~[~[$~H~~%~+])~48-):])~)~:])][)~[0]])$
FurryScript
It does not do interactive I/O; output is only at the end and input is only at the beginning, so like Kipple and Squishy2K it won't work (unless perhaps, it can use lazy evaluation while knowing the stack effect in advance that it won't use up the data on the stack).
1[ <1> 1# ] PAR DUP ~#
Gaot++
bleeeeeeeeeeet bleeeet bleeeeeet bleeeeeeeeeeeeet bleeeeeeeeeeeeet bleeeeeeeeeeeeet bleeeeeeeeeeeeet bleeeeeeeeet bleeeeeeeet
Gentzen
<- "stdlib"; <- "iolib"; do_zero : () / ($1(iosys) |- $2(@ ++)); do_zero = [io,lp] cut '0' [x] loop x lp [_,_,k] outbyte io x k; do_one : () / ($1(iosys) |- $2(@ ++)); do_one = [io,lp] cut '1' [x] loop x lp [_,k,_] outbyte io x k; truth : () / ($1(iosys), $2(|\|) |- $3(@ ++)); truth = [io,n,lp] cut '0' [z] cmp n z (do_zero io lp) (do_zero io lp) (do_one io lp); main : () / ($1(iosys) |- $2(@ ++)); main = [x,y] cut ([z] inbyte x) ([z] truth x z y); -> main;
Glass
{M[m(_x)0I!0c.?1O!1o.11?22"1"5S!5e.?=/(_x)11?\]}
Glypho
- Shorthand notation:
11+ddddd**>++* ido d>-+[\o\]
- ABC notation:
aabc aabc abba abab abab abab abab abab abbc abbc aaba abba abba abbc aaab abab abbb abab aaba abca abba abac aabb abbb aabb abcb
- Self-documenting Glypho code:
ffirsstpussuhfhforortytyeieighghtoonthhesstsaccak..kXYYZoooutptputttififeeqeualutoot4848lloopaaannddoutu
GolfScript
~{..p}do;
GridScript
#TRUTH MACHINE. @width 9 @height 5 (1,1):START (3,1):INPUT INT (5,1):GO EAST (7,1):SWITCH =1 (7,3):PRINT 1 (7,5):GO WEST (5,5):GO NORTH (9,1):PRINT 0
Hollow
{1}>
{.0}\>|>>
{1}:
{0}:?
Integ
}()([())?(-(48)({()))(](48))(?(-(49)({()))(~()(](49)))())
IRP
<mRoman> Would somebody please say 0 if the next number I say is 0, or say 1
in an infinite loop if the next number I say is 1?
ISCOM
$=1 1=@ ?[1]=0 #=FALSE ?[1]=1 #=TRUE #=END ;;TRUE @=1 #=TRUE ;;FALSE @=0 ;;END
Isolated
00000011 11000000 10000100 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 10111100
itflabtijtslwi
/ ///
//
GGChGG
/0P1/0/
/./<\\\\>\\\\\\/
/P0/
1
./<.\>./<.\.\.\.\>.\.\.\.\.\.\./
./P.0./P.2./
./P.1./P.0./
./<.\>././
./P.\2./P.0./
P.1
/
/P1/P0/
/<>//
/P2/P0/
ChP1
Jolverine
.*.....*......*......*......*......*.....*...*...*......*.....*..*......*....
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* *
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* *
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* *
. .
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*
Jug
Since Jug has no input function, the second line "fill(0);" must be omitted (for 0) or not (for 1). Below, it is not omitted.
jug(0, 1);
fill(0);
echo(volume(0));
drain(0){
echo("1");
};
Karma
86*?-, \\;@<
KimL
var.decl string a io.in a One: io.out a ctrl.goto One if a = "1"
Kipple
Kipple only produces output if the Kipple program halts, so it is not possible to output an infinite number of 1 characters. However, the following program is probably a Kipple truth-machine in principle.
i>a-48 a? (a 49>o) 48>o
Kkipple
This program is very similar to its Kipple equivalent, but it actually works since Kkipple adds interactive I/O.
io>a-'0' a? (a '1'>o*) '0'>o*
L00P
(:|;:(|&))
Linguine
1[0?,0~48:2]3 2[0$]0 3[0$]3
LOCK
{main
:a
$a
^a
?one
<main
}
{one
$a
}
Madbrain
r 1 = 1 p 3 j
Malbolge
(aONMLKJIHGFEDCBA@?>=<;:98765FD21dd!-,O*)y'&v5#"!DC|Qzf,*vutsrqpF!Clk|ih
gfed9(T&6KoOHZYXWVUTSRQPONM]KJIHGFEDCBA@?>=<;:9876"'~g|edybav_zyxwvotsrq
pSnPlOjibKfedcba`_XA??ZYRW:UTSLQ3ONMLK.IHGFE>CBA@?"=<;:38765432s0/.n,+*)
j!&%f{"!~}|_zyxZvYnsrqpRnmlkjML:f_^GF!
Malbolge Unshackled
(aONMLKJIHGFEDCBA@?>=<;:98765FD21dd!-,O*)y'&v5#"!DC|Qzf,*vutsrqpF!Clk|ih
gfed9(T&6KoOHZYXWVUTSRQPONM]KJIHGFEDCBA@?>=<;:9876"'~g|edybav_zyxwvotsrq
pSnPlOjibKfedcba`_XA??ZYRW:UTSLQ3ONMLK.IHGFE>CBA@?"=<;:38765432s0/.n,+*)
j!&%f{"!~}|_zyxZvYnsrqpRnmlkjML:f_^GF!
MarioLANG
;[! ==# : === >>:< "===
Math++
2+2*!?>$ 1>out 2>$ 0>out
Maze
##,##,##,##,## ##,##,^^,##,## ##,##,<<,##,## ##,..,AA,%D,## ##,>>,##,>>,## ##,(),##,%U,## ##,##,##,##,## AA-> IF ==0 THEN %L ELSE %R
Microscript
i{z1p
Minks
a INP a OUT a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC x a DEC b a DEC loop a dec a b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b INC b DEC loop b dec b loop OUT
MIX (Knuth)
The following has quotation marks since it has a space in the first character position (the quotation marks should not be punched into the card). Expects input in typewriter (one character only, at leftmost position) and output also in typewriter.
" 0 R6 A R4 0 AP 7A7I F 7V 0 R7 E 9 BE "
Muriel
A : ~; .A; D : ".\"1\"; Q : \"D : \\\"\" + |D + \"\\\";\";Q : Q + D;@Q"; Q : "D : \"" + |D + "\";"; Q : Q + D; n : &Q * #A; Q : %Q,0,n; @Q
Nhohnhehr
+---+ |@/0| |$? | |#\1| +---+
NOR
1 0 INP in1 50 MUX in1, 100, 200 100 OUT 0 150 OFF 200 OUT 1 250 JMP 200
NULL
17328365648
Numeric Topline
16469004801100010
Ouroboros
r.*.n!(
OOLANG
start.label; var.Input.0.in; var==0.4.7.ifa; 0.print; .halt; var==1.9.9.ifa; 1.print; start.goto;
PATH
/ \
$,>-}+{v\>-}+{^}.#
/ \ > ^
\./!}/
pb
^t[B]vb[T]w[B!48]{b[49]v}
pbrain
>++++++[-<++++++++>]<(.)+(.:),:
Piet
PoGo
if po uf to go
Pyth
QIQ#Q
Q-Ref
_innum(x)[_outnumcount(x)x?]
QWOP
OW1P1W1OW0P0
Recurl
Since Recurl has no input facilities, the first line must be either A:<0> or A:<1>.
- Using an infinite list:
A:<0> A?0< A:<1,A> > A#0
- Using a loop:
A:<0> A#1 A@0< A#1 >
Redivider
main:
{ /0/; "0" }
| { /1/; "1" + main["1"] }.
ResPlicate
0 -49 13 1 48 8 1 0 0 4 2 0 49 4 2 48 0
REVER
(<i,>o) {
+d(!x)=[0**x='1',0='0'];
+x=0;
d=i;
*d(x);
o=d;
x-=1;
*'0';
o=d;
}
REVERSE
GETXA SKIP PUTXB XB+24 XA-48 REVERSE=XA XB+25 SKIP REVERSE PUTXB REVERSE
ROOP
I wX nw hO
Sceql
______&! \ -= --------= ________= / ==_== \ =*= / =-*
Self-modifying Brainfuck
1,.[-<->]<[<]>[.]0
Ser2
!'@run-:#:/loop-:'@input-:#: !loop-:'@iopair--:#:'0:/exit-:'@output--:#:'0: !loop-:'@iopair--:#:'1:/loop-:'@output--:#:'1: !exit-:'@iopair--:#:'0:/#:
Shuffle
🃑🃞🂲🂾🃏🂷 🃞🂱🂮🃁🂾🂱🂾
SICKBAY
100 INPUT A% (200+A%) PRINT 0; 200 PRINT 1;:GOTO 200
Simplefunge
>ivv o ^ >V 0 o @
Slashist
VAR:<choice>:""
VAR:<ZERO>:{0}
VAR:<ONE>:{1}
INP:<choice>
NCL:ZRO:[<inp> = {0}]
CEL:ONE:[<inp> = {1}]
LOP:ZRO
OUT:<ZERO>
NUK:
LOP:ONE
OUT:<ONE>
ELP:ONE
Slim
0@0@0@0@0@0@0@0@0@| :X| :X|@< :X|@< :X| :X| :X| :XX| :^^@^^@<^^^^@0@ :0^^@^^@^^^@^0@0@0@0@0@0@0@0@ :
SMITH
MOV R3, 3 MOV R0, TTY MOV R1, R0 SUB R0, 48 NOT R0 MUL R0, 3 COR +1, +5, R0 NOP NOP NOP COR +1, -3, R3 MOV R0, 48 MOV TTY, R0 STOP MOV R2, 49 SUB R1, 49 NOT R1 MUL R1, 2 MOV TTY, R2 COR +1, -1, R1
Core SNUSP
$,.>++++++!/-<-------->\ /.\!+>>/!?<\?<++++++++>/ \./
Splinter
As the language has no input, place 'Z' (for 0) or 'O' (for 1) inside the first {}. Below, 0 is used.
I{Z}
Z{\0}O{\1O}I
Squishy2K
Like the truth-machine in Kipple, this is only a truth-machine in principle, as the infinite string of 1's that is generated is never output (at least on the reference interpreter; the language afaik would not disallow implementations that lazily output the result.)
* main
{
"0"? "0"!
"1"? "1" main("1")!
}
Stackstack
inputnum while "1" print 1 endwhile "0" print
StaPLe
eval;pop;dup;[if;put;dup;swap;[eval;pop;dup;push;dup;];];dup;get;
Starry
, + + + * *' + . '` + . +' `
Stlang
M ./r(i1=={{.$?0}{.1(i@}.0U}{.0(i@}? \
For other versions see Stlang#Truth-machine.
Super Stack!
input if dup output fi output
Suxesol
As there is no input in Suxesol, the first block must be either [0] or [1]. Below, [1] is used.
[1][0*[?[1.]]0.]
SyL
ke ge no
ki yo gihi wewo
we
ke no yo geha we le wu no wo
ku le
we
yo giho we no wo
wo
wo
ke no yo geha we la wu no wo
yo giho we no wo
Tag
As there is no input in Tag, the queue should be initially populated with 0 or 1.
zero :01(p0#) one :11(p1) print:p2!(p1)
Telegram
START INPUT X STOP PRINT X STOP GO TO 2 IF X EQUALS 1 STOP END
This=That
a=input a=print while loop i=a~~1 a=print while loop i=end
Thue
a::=::: -0-::=~0 1::=~1 --::=-1- ::= -a-
Trigger
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$.$$-111..$-000
Underload
This is an example of an implementation in a language that has no input facilities, only output. In the first parentheses, use ! for 1-input, and nothing for 0-input. The program below is calibrated for 1-input.
(!)((1)S:^)~((0)S)~^:^
Unlambda
``c`@?1`c`|i
Urn
(:(1:::a)::)(a:(1:::)(1:::a)::a)
Please note that an Urn program needs to receive an EOF after the input of 0 or 1; no input-collecting (loop) in this language can end if it doesn't reach the end of input (that is: receive EOF).
Verbose
Untested. Input must be either "NULLA" for zero or "I" for one.
GET A ROMAN NUMERAL TYPED IN BY THE CURRENT PERSON USING THIS PROGRAM AND PUT IT ONTO THE TOP OF THE PROGRAM STACK PUT THE NUMBER -III ONTO THE TOP OF THE PROGRAM STACK MOVE THE FIRST ELEMENT OF THE PROGRAM STACK TO THE SECOND ELEMENT'S PLACE AND THE SECOND ELEMENT OF THE STACK TO THE FIRST ELEMENT'S PLACE GET THE TOP ELEMENT OF THE STACK AND OUTPUT IT FOR THE CURRENT PERSON USING THIS PROGRAM TO SEE MOVE THE FIRST ELEMENT OF THE PROGRAM STACK TO THE SECOND ELEMENT'S PLACE AND THE SECOND ELEMENT OF THE STACK TO THE FIRST ELEMENT'S PLACE GET THE FIRST ELEMENT OF THE PROGRAM STACK AND THE SECOND ELEMENT OF THE PROGRAM STACK AND IF THE SECOND ELEMENT OF THE PROGRAM STACK IS NOT ZERO JUMP TO THE INSTRUCTION THAT IS THE CURRENT INSTRUCTION NUMBER AND THE FIRST ELEMENT ADDED TOGETHER'S RESULT
Wheat
input x if x "0": terminate - v THE INPUT DATA FOR THE TRUTH-MACHINE BELOW (USE "0" OR "1") output "0"
When
Untested.
out = 1 when out out = in
Whenever
1 2#-read();
2 defer(1) print("0") 3#-1;
3 defer(2) again(3) print("1");
Whitespace
Here, each character used in instructions (space, tab, and linefeed) is preceded by S, T, or L, respectively.
S S L T L T T S S L T T T L S S L S L S T L S T S L S S S S T L T S S T L T S L L L L .
x-D
:E 8-------> x-----> x8S 8:C 8> :) 8P :( 8< 8P
XRF
0AFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF FFFFF 1BFFF 31AFF
Yboy
,v~1_1:..$^...!
Ypsilax
If a 0 is placed immediately to the right of 'IN:', a single 0 will appear immediately to the right of 'OUT:'. If a 1 is placed immediately to the right of 'IN:', an infinite number of 1's will eventually appear immediately to the right of 'OUT:'.
( ) ( )
------ ------
N:0N:0 N:1N:1
T: T:0 T: T:! ( )
! 1!
----
IN:
OUT:
ZOMBIE
ZOMBIE, like Underload, lacks input facilities. For 0, the third line should be "remember 0". For 1, the third line should be "remember 1".
zombie input is a zombie summon remember 1 animate zombie bleck is a zombie summon task go taste remembering input 0 good say "0" bad shamble say "1" around spit animate animate
