#ifndef __GRP#define __GRP#ifndef _POSIX_SOURCE   This header file is not defined in pure ANSI#endif#pragma lib "/$M/lib/ape/libap.a"#include <sys/types.h> struct	group {	char	*gr_name;	gid_t	gr_gid;	char	**gr_mem;}; #ifdef __cplusplusextern "C" {#endif extern struct group *getgrgid(gid_t);extern struct group *getgrnam(const char *); #ifdef __cplusplus}#endif #endif