JawaKing00

Ok, I've been working with embedded C for too long and am too accustomed to using hexidecimal by default.

I'm trying to write a small piece of code that will read a .hex file and compute a 16 bit checksum of the contents. The problem I'm having is that I can't seem to figure out how to get C to read the characters in the file as hex numbers and not ANSI characters.

Ultimately I want the program to grab a pair of characters (aka one byte) and then add all of them together and display the result as a hex number.

Basically how can I tell the program that "01" = 16, "FF" = 255, etc. ?

Thanks in advance for the help.