cuserid(3s)
NAME
cuserid − get character login name of the user
SYNTAX
#include <stdio.h>
char *cuserid(s)
char *s;
DESCRIPTION
The cuserid subroutine generates a character-string representation of the login name that the owner of the current process is logged in as. If s is a NULL pointer, this representation is generated in an internal static area, the address of which is returned. Otherwise, s is assumed to point to an array of at least L_cuserid characters. The representation is left in this array. The constant L_cuserid is defined in the <stdio.h> header file.
DIAGNOSTICS
If the login name cannot be found, cuserid returns a NULL pointer. If s is not a NULL pointer, a null character (\0) will be placed at s [0] .