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Hello_Fucking_World.txt
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Hello_Fucking_World.txt
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[ This program prints "Hello Fucking World!" and a newline to the screen, its
length is ########### active command characters. Partially taken from wikipedia.
This loop is an "initial comment loop", 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. This
loop and the commands it contains are ignored because the current cell
defaults to a value of 0; the 0 value causes this loop to be skipped.
]
++++++++ 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 until 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 until 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
The result of this is:
Cell no : 0 1 2 3 4 5 6
Contents: 0 0 72 111 88 32 8
Pointer : ^
<<<--. Move to Cell #2 subtract 2 to get 70 which is 'F'
>++++++. Move to Cell #3 add 6 to get 117 which is 'u'
<<+++ Move to Cell #1 and add 3
[>>------<<-] Loop and subtract 6 from Cell #3 at each iteration
ending up with
The result of this is:
Cell no : 0 1 2 3 4 5 6
Contents: 0 0 72 99 88 32 8
Pointer : ^
>>. Move to Cell #3 and print to screen
++++++++.--.+++++. Add 8 subtract 2 and add 5 to Cell #3 for 'kin'
-------. subtract 7 to end up with 'g'
>>. Move to Cell #5 for blank space
The result of this is:
Cell no : 0 1 2 3 4 5 6
Contents: 0 0 72 103 88 32 8
Pointer : ^
<-. Subtract 1 from Cell #4 for 87 to give a 'W'
<++++++++. Cell #3 was set to 'g' from last word so add 8
+++.------.--------. Cell #3 for 'rl' and 'd'
>>+. Add 1 to Cell #5 gives us an exclamation point
>++. And finally a newline from Cell #6