Does standard c library provides linked list etc.

问题:

Do standard C library implementations, especially glibc (the GNU C Library) provide linked lists, stack et al. data structures, or do we have to roll our own?

Thanks.

回答1:

The C Standard does not provide data structures like linked list and stack.Some compiler implementations might provide their own versions but their usage will be non portable across different compilers.

So Yes, You have to write your own.

回答2:

The C standard doesn't, glibc however provides lists, tail queues, and circular queues in <sys/queue.h> according to the queue man page those come from BSD and not POSIX.

回答3:

There are hash tables, binary trees and binary search stuff in glibc. Those are part of C89, C99 and/or POSIX.1 standards. Some reason linked list is not there.

More info from man pages: hsearch, tsearch and bsearch

Note: Some of those have bad design. For example: hsearch allows only one hash table per process. The GNU compiler, gcc/glibc, provides reentrant versions hcreate_r, hsearch_r, and hdestroy_r that allow multiple hash tables. See also Stack Overflow's How to use hcreate_r.

回答4:

As such C does not provide data structures but you can use the glib provided by Gnome

Queue.h ad Tree.h also provides you some Data structures

回答5:

There's a hash table implementation in POSIX (and GLibc); see the manpages for hcreate/hdestroy/hsearch.

But, as mentioned, using glib is probably the easiest way to save yourself from reimplementing the basic data structure.

回答6:

As other answers already stated, there isn't a linked list library in the standard library.

I've written one for my own use a while ago. You can freely use it or use the code as reference.

You can find it here: libllist