In what library is strcat_s?

Question

I tried including string.h and stdlib.h, but still get undefined reference compile errors.

This leads me to conclude that it is in a different library that I didn't include. Where is it?

I am using gcc compiler - the code is written in Windows, but is going to be compiled and run on a unix server.

Can your edit your post with what environment you are using (OS and compiler)? Thanks. — ryyker, May 26 '15 at 17:40
Use `strcat` instead. There's no reason to use `strcat_s` except for making your code less portable. — fuz, May 26 '15 at 17:40

Bill Lynch · Answer 1 · 2015-05-26T18:49:20.417

9

strcat_s can be found in string.h as of C 2011. Generally speaking, only microsoft has implemented these alternative functions.

edited May 26 '15 at 18:49

answered May 26 '15 at 17:24

Bill Lynch

Rahul Tripathi · Answer 2 · 2015-05-26T17:41:32.270

4

It is present in string.h on windows platform

You can also refer this cppreference

Defined in header <string.h>

You can better use strcat if you are working on UNIX platform.

edited May 26 '15 at 17:41

answered May 26 '15 at 17:25

Rahul Tripathi

@Sunspawn:- You want to concatenate the strings...right? If yes then you can try like this: `String="$a $b $c" where a="aaa" b="bbb" c="ccc"` – Rahul Tripathi May 26 '15 at 17:30
@Sunspawn:- You can also refer: http://man7.org/linux/man-pages/man3/strcat.3.html – Rahul Tripathi May 26 '15 at 17:32
@RahulTripathi that's not C. – fuz May 26 '15 at 17:38
Look, I already have it in my code and I want it to work - is there a way to make it work or not? – Sunspawn May 26 '15 at 17:41
2

@Sunspawn:- I dont think it will work in Unix platform. You can better try to use [strcat](http://man7.org/linux/man-pages/man3/strcat.3.html) in UNIX – Rahul Tripathi May 26 '15 at 17:42

score 4 · Accepted Answer · edited May 26 '15 at 18:50

4

There's an implementation in slibc.

edited May 26 '15 at 18:50

Constantinius

answered May 26 '15 at 17:45

4566976

score 2 · Answer 4 · answered May 26 '15 at 17:36

It seems it is part of C11 standard:

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Honestly, I am not very well-versed with when it comes to standards and I can very well be wrong >.<

4 Answers4