Help with C++ interfacing

I'm very new to programing in C ++ and C#. However I would like to use either programing language to communicate with my arduino. Right now I have a simple sketch uploaded onto my arduino board that turns on a LED when the user types 'H' in the serial monitor window.

Now I would like to interface this code with C++. Can anyone please tell me the best way to do this? Or if anyone has some sample C++ code that they can send me to get me started, that would be great too. Any help on getting me started would be greatly appreciated!

Thanks, Bella

You might want to read over this topic from the Arduino playground site:

please don't cross-post - it wastes time: