cuserid

   Returns a pointer to a character string containing the name of
   the user initiating the current process.

   Format

     #include  <unistd.h> (X/Open, POSIX-1)

     #include  <stdio.h> (X/Open)

     char *cuserid  (char *str);
 

Additional information available:

Function_Variants               Argument        Return_Values