Other C language standards' pages:

C Naming Standards
C Naming Parameters
C Language Coding Standards

To maintain manageable-length identifiers, developers often abbreviate words when constructing identifiers. If these abbreviations are not carefully chosen, they can create confusion.

Following is a list of acceptable abbreviations (in alphabetical order of abbreviated word).

Warning:: Don't use other abbreviations.

Note:: Propose additions if you feel something's missing.

Original Word abbreviation

acknowledge ack
allocate alloc
callback cb
concatenate cat
delete del
file descriptor fd
forward fwd
handle hndl
handler hdlr
initialize init
iterator it
laugh out loud lol :)
message msg
negative acknowledge nack
number num
number of count
pointer ptr
previous prev
receive rx
reference ref
register reg
timer tmr
transaction txn
transmit tx