I tried, but also couldn't get it to work. But, to be honest, I didn't really look for why it wasn't working. I'll snoop around and see if it's in the pre-existing headers/sourcefiles. If not, I'll see if I can write one.
By default, the FILE type and functions are not activated because of lite-C's own file functions. But of course you can add them easily. Lite-C supports all C library and Windows API functions. Here's a description how to add any function you want: