C declarations

[Doug Gwyn (VLD/VMB)]

There is an established C and UNIX convention that character strings
are NUL-terminated (the alternative is to keep a length count with
every string).  General char[] arrays do not necessarily have to
follow this convention.  There are str*() routines for manipulating
NUL-terminated strings and mem*() routines for handling general
char[] arrays.  This is not really an accident, since what is nice
for one usage is not so nice for the other and vice-versa.