CODEWITHSUNDEEP
cfunctionstandard-libraryansi-c
Parth
Parth

Reputation: 644

Procedure to include own functions to ANSI C Standard library

How one can include his/her own programming functions to standard C (ANSI C) library? And any one who is learning or working on C language able to use those functions anywhere anytime, no need of development in general.

Example : someone developed function named "FunFun()" and assume it does fantastic work for most programmers. so how anyone can access this "FunFun" function without developing and just including standard library?

Upvotes: -6

Views: 757

Answers (2)

Lundin
Lundin

Reputation: 214495

The sane way to approach it would be to develop a 3rd party library and make it available over the internet through open source, Github etc.

The GNU C dialect is one such example, which is a collection of non-standard compiler extensions used by the GCC compiler. One could join the GCC open source group and try to get the new function added there. It would still not be standard library C, but the GCC extensions are often an inspiration to the C standard and several of them (designated initializers, flexible array members, anonymous struct/union etc) have been adopted into the language itself with the C99 and C11 standards. One of the purposes for GNU C is actually to serve as an experimental playground where new languages features can be tried out live.

If you truly wish to add a new function to the actual C standard library, you would have to join the ISO working group and convince them that the function should be added to the language. Or alternatively find a member of the committee and convince them to speak in favour of the new function.

All this of course assuming you are a C programming veteran, or otherwise nobody will likely take you seriously.

Upvotes: 5

user2371524
user2371524

Reputation:

Your question can't be answered because it's based on several wrong assumptions.

  • Things like stdlib.h are not libraries. They are header files intended to be included in your program. Including means the contents are literally pasted into your program at the point of inclusion before the actual compilation happens. They are typically used for declaring functions, types, global variables etc a library provides. The actual library is then linked against after compilation.

  • There's no such thing as the C library as well as there's no such thing as the C compiler. is a language that is specified in an open standard (if you're interested, here's the last draft of the latest standard version C11). There are many actual implementations and a complete implementation consists of at least a compiler and a standard library. You can of course implement your own standard library. It's a lot of work to have it really conform to the standard (you would have to implement printf() and scanf() correctly, for example). With your own standard library, you can also include your own extensions, but this would only mean people using your standard library (instead of e.g. glibc on a GNU system) could directly use them.

  • For having a function available on any implementation of C, it would be necessary to have the C Standard specify it. You won't get a new function in the standard without some very good reasoning.

So if you want to make your own function available to others, do what everyone does and just implement it in your own library. Users can download it, include its headers and link against it.

Upvotes: 4

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