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Brainfuck Sisukord Süntaks | Hello world | Brainfucki interpretaator | Välislingid | Navigeerimismenüüimetilluke variantBrian Raiteri Brainfucki lehekülgFrans Faasei Brainfucki lehekülg, kust leiab ka õpetuseBrainfuck development environment with integrated debugger (IDE) for WindowsBrian Raiteri assembleris Linuxile kirjutatud Brainfucki kompilaatori lähtetekstBrainfucked

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programmeerimiskeelUrban MüllerkompilaatorAmiga OS 2.0-leBrian RaiterLinuxileinterpretaatoreidDaniel B. Cristofaniimetilluke variantProgrammisviitmuutujabaitidemassiivisHello world












Brainfuck




Allikas: Vikipeedia






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Brainfuck
Faililaiend
.b, .bf
Paradigma
esoteeriline
Väljalaskeaeg
1993
Looja
Urban Müller
Mõjutatud keeltest
P", FALSE

Brainfuck on programmeerimiskeel, mille lõi Urban Müller eesmärgiga kirjutada maailma kõige väiksem kompilaator. Loomulikult vajas selline kompilaator ka maailma väikseimat programmeerimiskeelt, milleks saigi Brainfuck.


Urban Mülleril õnnestus kirjutada Amiga OS 2.0-le kompilaator, mis oli vaid 200 baidi suurune. Brian Raiter kirjutas Linuxile kompilaatori, mis saavutas suuruse 171 baiti. Brainfucki kompilaatoreid ja interpretaatoreid on eri autorid kirjutanud paljudes keeltes. Eriti tasub ära märkida Brainfucki interpretaatoreid, mis on kirjutatud Brainfuckis. Eeskätt Daniel B. Cristofani kirjutatud imetilluke variant.




Sisukord





  • 1 Süntaks


  • 2 Hello world


  • 3 Brainfucki interpretaator


  • 4 Välislingid




Süntaks |


Brainfuck on minimalistlik keel. Programmis on kesksel kohal üks globaalne viitmuutuja, mis programmi alguses viitab esimesele positsioonile suures baitide massiivis (võib olla näiteks 30 kilobaidi suurune), mis kõik on vaikimisi seatud väärtusele null. Keeles on kaheksa käsku, mis kõik koosnevad vaid ühest sümbolist:



  • > liigutab viida ühe positsiooni võrra edasi


  • < liigutab viida ühe positsiooni võrra tagasi


  • + suurendab viidatavat baiti ühe võrra


  • - vähendab viidatavat baiti ühe võrra


  • . kirjutab viidatava baidi tähemärgina programmi väljundisse


  • , loeb programmi sisendist tähemärgi ja kirjutab selle väärtuse viidatavasse baiti


  • [ liigub edasi vastava ']'-ni, kui viidatav bait võrdub nulliga


  • ] liigub tagasi vastava '['-ni, kui viidatav bait ei võrdu nulliga


Hello world |


Hello world programm Brainfuckis:


++++++++[->++++>+>>++>++>>+++>+<<<<<<
<<]>[->++>+++>+++>+>+>++<<<<<<]>.>+++
++.>----..+++.>----.>.>-.<<<.+++.----
--.<-.>>>+.>>++.


Brainfucki interpretaator |


Tegu on väga lihtsa C++ programmiga, mis näitab Brainfucki koodi väljundit seda kompileerimata.


#include <iostream>
#include <stack>
using namespace std;

int main()

 unsigned char buffer[30000] = 0;
 char *ptr = "+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++.";
 unsigned char *ptr2 = buffer;
 stack<char *> pos_stack;
 while(*ptr && *ptr != EOF)
 
 if(*ptr == '+') ++*ptr2;
 if(*ptr == '-') --*ptr2;
 if(*ptr == '>') ++ptr2;
 if(*ptr == '<') --ptr2;
 if(*ptr == ',') *ptr2 = cin.get();
 if(*ptr == '.') cout << *ptr2;
 if(*ptr == '[') pos_stack.push(ptr + 1);
 if(*ptr == ']' && *ptr2 != 0) ptr = pos_stack.top();
 else 
 if(*ptr == ']' && *ptr2 == 0) pos_stack.pop();
 ptr++;
 
 fflush(stdin);
 
 return 0;



Välislingid |


  • Brian Raiteri Brainfucki lehekülg

  • Frans Faasei Brainfucki lehekülg, kust leiab ka õpetuse

  • Brainfuck development environment with integrated debugger (IDE) for Windows

  • Brian Raiteri assembleris Linuxile kirjutatud Brainfucki kompilaatori lähtetekst


  • Brainfucked kompilaator (Windows/DOS)




Pärit leheküljelt "https://et.wikipedia.org/w/index.php?title=Brainfuck&oldid=5045709"













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