Regular expression libraries are available for C even though none of them are part of the C standard library.
Ah, true, true. You can always count on 3rd party libraries to cover the missing language libraries.
Originally Posted by Adak
io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
Originally Posted by Salem
You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.
Outside of your DOS world, your header file is meaningless.