Brainfuck Interpreter

Brain fuch is an esoteric language, though, it is Turing complete.

The original brainfuck language has 8 instructions only:

• + increments current cell. curentCell++
• - decrements current cell. currentCell--
• > moves the pointer to the right, or increments its position. pointerPos++
• < moves the pointer to the left, or decrements its position. pointerPos--
• , stores one byte of input in the current cell. cin >> curentCell
• . outputs the value of the current cell as an ascii char. printf("%c", currentCell)
• [ executes after bracket if current cell is not zero, otherwise it jumps to the closing bracket. if(currentCell != 0){executeLoop()}
• ] jumps back to opening bracket if the current cell is not zero, otherwise it exits the loop. if(currentCell != 0){executeLoop()}

all of those instructions are implemented in the interpreter, but I added a couple more for more functionality:

• * exits the interpreter
• & prints the current pointer position. cout << pointerPos
• ; this one outputs the value of the current cell as a numeric value. cout << currentCell

Example programs:

Hello world

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

Printing cell capacity

Copied from Esolangs

Calculate the value 256 and test if it's zero
If the interpreter errors on overflow this is where it'll happen
++++++++[>++++++++<-]>[<++++>-]+<[>-<
    Not zero so multiply by 256 again to get 65536
    [>++++<-]>[<++++++++>-]<[>++++++++<-]+>[>
        # Print "32"
        ++++++++++[>+++++<-]>+.-.[-]<<[-]<->] <[>>
        # Print "16"
        +++++++[>+++++++<-]>.+++++.[-]<<<-]] >[>
        # Print "8"
        ++++++++[>+++++++<-]>.[-]<<-]<
# Print " bit cells\n"
+++++++++++[>+++>+++++++++>+++++++++>+<<<<-]
>-.>-.+++++++.+++++++++++.<.>>.++.+++++++..<-.>>-
Clean up used cells.
[[-]<]