All programming will be done in ``ANSI'' C. (ANSI C is a ``standard'', a definition of the language that has become well accepted.) For students who don't know C, getting used to it is usually a major part of the effort in the course. In my opinion, the best thing that you can do to get a head start on 228 is to make yourself a little familiar with C.
The hard part about C really is coping with the mysterious bugs that
will crop up - bugs of a very different sort than
you even encountered using Turing.
So if you can get access to a C compiler and try running and debugging
some extremely simple programs (say at the level of a csc148 assignment 1),
that would be great.
But even just reading about C would be helpful.