Implementation of a Brainfuck interpreter

Here's a simple Brainfuck interpreter written 
entirely in C. It's worth mentioning that 
Brainfuck is not a serious programming language; 
it's more of a tool for learning C and pointers. 
It really helps to understand these concepts in 
practice. Additionally, it is provided as a 
command-line tool:

    BRAINFUCK_INTERPRETER <brainfuck_code> [<args>...] (optional)

The interpreter takes Brainfuck code, which is 
better written in quotes, as well as arguments 
for the code that are used in the key sign. 
Here’s the command to compile the project using gcc:

    gcc -g -std=c11 brainfuck_interpreter.c -o BRAINFUCK_INTERPRETER

Congratulations! You now have a Brainfuck interpreter 
on your PC.