🚀 go-pugleaf

I was wondering if anyone might be able to suggest
some books that would aid in leaning how to program
in GCC, GNU, C or whatever gcc is.  

Also, I am trying to get a counter installed.  During
compilation using 'make' I get several errors pertaining
to files not being found.  Some of these files include
stdio.h, time.h, math.h, sys/types.h, and sys/stat.h. 
Are these files that should be somewhere on my system?
They don't come with the counter program.  Where can
I obtain these files? Thanks!