How to convert Char in to ASCII???

I am working on a morse code translator, and I have all of the correct orders of flashing stored in a 26x4 array. But, my problem is that I need to convert my the inputted char into it's ASCII representation so it can fetch the correct order of flashing back from the array. Please Help!

What is the source of the input? If you send a 'A' over a serial connection the byte you receive will be 0x41 -- it already is ASCII.

Can you be more specific?

I can't imagine what form you'd have them in if they weren't ascii.

What exactly do you have? And what do you want? Show your code.