## brain_fuck
### Instructions
Write a `Brainfuck` interpreter program.
The source code will be given as first parameter.
The code will always be valid, with less than 4096 operations.
`Brainfuck` is a minimalist language. It consists of an array of bytes (in this exercise 2048 bytes) all initialized with zero, and with a pointer to its first byte.
Every operator consists of a single character :
- '>' increment the pointer
- '< ' decrement the pointer
- '+' increment the pointed byte
- '-' decrement the pointed byte
- '.' print the pointed byte on standard output
- '[' go to the matching ']' if the pointed byte is 0 (loop start)
- ']' go to the matching '[' if the pointed byte is not 0 (loop end)
Any other character is a comment.
For receiving arguments from the command line you should use something like:
```rust
fn main() {
let args: Vec< String > = std::env::args().collect();
brain_fuck(&args[1]);
}
```
### Usage
```console
$ cargo run "++++++++++[>+++++++>++++++++++>+++>+< < < < - ] > ++.>+.+++++++..+++.>++.< < +++++++++++++++.>.+++.------.--------.>+.>."
Hello World!
$ cargo run "+++++[>++++[>++++H>+++++i< < - ] > >>++\n<<< < - ] > >--------.>+++++.>."
Hi
$ cargo run "++++++++++[>++++++++++>++++++++++>++++++++++< < < - ] > ---.>--.>-.>++++++++++."
abc
```
