hello_world.bf

/*
*   Brainfuck Website: https://esolangs.org/wiki/Brainfuck
*   Brainfuck documentation: https://gist.github.com/roachhd/dce54bec8ba55fb17d3a
*/

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

/*
The above link is the program to print "Hello World" in Brainfuck language.

Output: Hello World

Description on how Brainfuck works: 
    Brainfuck operates on an array of memory cells, each initially set to zero. (In the original implementation, the array was 30,000 
    cells long, but this may not be part of the language specification; different sizes for the array length and cell size give different 
    variants of the language). 
    There is a pointer, initially pointing to the first memory cell. 

Command             Description
    >	        Move the pointer to the right
    <	        Move the pointer to the left
    +	        Increment the memory cell at the pointer
    -	        Decrement the memory cell at the pointer
    .	        Output the character signified by the cell at the pointer
    ,	        Input a character and store it in the cell at the pointer
    [	        Jump past the matching ] if the cell at the pointer is 0
    ]	        Jump back to the matching [ if the cell at the pointer is nonzero

    
Explanation of Hello World in Brainfuck: 

+++++ +++               Set Cell #0 to 8
 2 [
 3     >++++               Add 4 to Cell #1; this will always set Cell #1 to 4
 4     [                   as the cell will be cleared by the loop
 5         >++             Add 4*2 to Cell #2
 6         >+++            Add 4*3 to Cell #3
 7         >+++            Add 4*3 to Cell #4
 8         >+              Add 4 to Cell #5
 9         <<<<-           Decrement the loop counter in Cell #1
10     ]                   Loop till Cell #1 is zero
11     >+                  Add 1 to Cell #2
12     >+                  Add 1 to Cell #3
13     >-                  Subtract 1 from Cell #4
14     >>+                 Add 1 to Cell #6
15     [<]                 Move back to the first zero cell you find; this will
16                         be Cell #1 which was cleared by the previous loop
17     <-                  Decrement the loop Counter in Cell #0
18 ]                       Loop till Cell #0 is zero
19 
20 The result of this is:
21 Cell No :   0   1   2   3   4   5   6
22 Contents:   0   0  72 104  88  32   8
23 Pointer :   ^
24 
25 >>.                     Cell #2 has value 72 which is 'H'
26 >---.                   Subtract 3 from Cell #3 to get 101 which is 'e'
27 +++++ ++..+++.          Likewise for 'llo' from Cell #3
28 >>.                     Cell #5 is 32 for the space
29 <-.                     Subtract 1 from Cell #4 for 87 to give a 'W'
30 <.                      Cell #3 was set to 'o' from the end of 'Hello'
31 +++.----- -.----- ---.  Cell #3 for 'rl' and 'd'
32 >>+.                    Add 1 to Cell #5 gives us an exclamation point
33 >++.                    And finally a newline from Cell #6

*/