+Brainfuck mode + +[ This program prints "Hello World!" and a newline to the screen, its + length is 106 active command characters [it is not the shortest.] + + This loop is a "comment loop", it's a simple way of adding a comment + to a BF program such that you don't have to worry about any command + characters. Any ".", ",", "+", "-", "<" and ">" characters are simply + ignored, the "[" and "]" characters just have to be balanced. +] ++++++ +++ Set Cell #0 to 8 +[ + >++++ Add 4 to Cell #1; this will always set Cell #1 to 4 + [ as the cell will be cleared by the loop + >++ Add 2 to Cell #2 + >+++ Add 3 to Cell #3 + >+++ Add 3 to Cell #4 + >+ Add 1 to Cell #5 + <<<<- Decrement the loop counter in Cell #1 + ] Loop till Cell #1 is zero; number of iterations is 4 + >+ Add 1 to Cell #2 + >+ Add 1 to Cell #3 + >- Subtract 1 from Cell #4 + >>+ Add 1 to Cell #6 + [<] Move back to the first zero cell you find; this will + be Cell #1 which was cleared by the previous loop + <- Decrement the loop Counter in Cell #0 +] Loop till Cell #0 is zero; number of iterations is 8 + +The result of this is: +Cell No : 0 1 2 3 4 5 6 +Contents: 0 0 72 104 88 32 8 +Pointer : ^ + +>>. Cell #2 has value 72 which is 'H' +>---. Subtract 3 from Cell #3 to get 101 which is 'e' ++++++++..+++. Likewise for 'llo' from Cell #3 +>>. Cell #5 is 32 for the space +<-. Subtract 1 from Cell #4 for 87 to give a 'W' +<. Cell #3 was set to 'o' from the end of 'Hello' ++++.------.--------. Cell #3 for 'rl' and 'd' +>>+. Add 1 to Cell #5 gives us an exclamation point +>++. And finally a newline from Cell #6 + + + + + A mode for Brainfuck + + MIME types defined: text/x-brainfuck +
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