What can you do in C without “std” includes? Are they part of “C,” or just libraries?

Question

I apologize if this is a subjective or repeated question. It\'s sort of awkward to search for, so I wasn\'t sure what terms to include.

What I\'d like to know is what th

Answer 1

The std libraries are "standard" libraries, in that for a C compiler to be compliant to a standard (e.g. C99), these libraries must be "include-able." For an interesting example that might help in understanding what this means, have a look at Jessica McKellar's challenge here:

http://blog.ksplice.com/2010/03/libc-free-world/