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Diffstat (limited to 'brainfuck.html.markdown')
| -rw-r--r-- | brainfuck.html.markdown | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/brainfuck.html.markdown b/brainfuck.html.markdown index 9282381f..27ac6921 100644 --- a/brainfuck.html.markdown +++ b/brainfuck.html.markdown @@ -53,25 +53,27 @@ until cell #1 is 0, and cell #2 holds cell #1's old value. Because we're on cell #1 at the end of the loop, move to cell #2, and then print out the value in ASCII. -Also keep in mind that the spaces are purely for readibility purposes. You +Also keep in mind that the spaces are purely for readability purposes. You could just as easily write it as: ,[>+<-]>. Try and figure out what this program does: -,>,< [ > [ >+ >+ << -] >> [- << + >>] <<< -] >> +,>,< [ > [ >+ >+ << -] >> [- << + >>] <<< -] >> This program takes two numbers for input, and multiplies them. The gist is it first reads in two inputs. Then it starts the outer loop, conditioned on cell #1. Then it moves to cell #2, and starts the inner -loop conditioned on cell #2, incrementing cell #3. However, there comes a -problem: at the end of the inner loop, cell #2 is zero. To solve this problem, +loop conditioned on cell #2, incrementing cell #3. However, there comes a +problem: At the end of the inner loop, cell #2 is zero. In that case, +inner loop won't work anymore since next time. To solve this problem, we also increment cell #4, and then recopy cell #4 into cell #2. +Then cell #3 is the result. ``` -And that's brainfuck. Not that hard, eh? For fun, you can write your own -brainfuck programs, or you can write a brainfuck interpreter in another +And that's brainfuck. Not that hard, eh? For fun, you can write your own +brainfuck programs, or you can write a brainfuck interpreter in another language. The interpreter is fairly simple to implement, but if you're a masochist, try writing a brainfuck interpreter… in brainfuck. |