Hello! Look at my portfolio and you will see that I've already coded a Pacman game (in BASIC). If that's enough for you, you can have the code (untouched) for 8 euros. If you'd like me to convert it to C# first, I'll do it for 10 euros. If you'd like me to convert it to C++ first, I'll do it for 12 euros. And if you need to me to explain how any of the code works, just ask.
Please note: I am not offering to convert the code to just C code (i.e. not C# or C++). I'm not sure if I'm familiar enough with C to do that for you. If you like, I can TRY, and if it doesn't work, don't pay me (Just don't give me a bad review, because I am giving you fair warning.)
Would love to work for you. :)
Take care,
Ron