brainfuck语言解释器，可以说是功能最简单的解释器了。修改了bug，删除了无效代码。解释器自动扩展内存，没有代码与数据长度限制。-brainfuck language interpreter, we can say is the most feature a simple interpreter. Modify the bug, deleted invalid code. Interpreter automatically extended memory, there is no code and data length limitations.