MKTEMP(3)

NAME
mktemp - make a unique file name

SYNOPSIS
char *mktemp(template)
char *template;

DESCRIPTION
Mktemp replaces template by a unique file name, and returns the address of the template. The template should look like a file name with six trailing X's, which will be replaced with the current process id and a unique letter.

SEE ALSO
getpid(2)