#include <stdio.h>

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>

#include <errno.h>


#ifndef	INADDR_NONE
#define INADDR_NONE	0xffffffff
#endif

int	main(int argc, char **argv)
{
	char			hostname[256];
	struct hostent	*he;
	u_long			add;

	if (gethostname(hostname,sizeof(hostname)) < 0)
	{
		perror("gethostname: who am I ?");
		exit(1);
	}

	if ( (he=gethostbyname(hostname)) == NULL)
	{
		perror("gethostbyname: can't get an address");
		exit(1);
	}

	add=htonl( ((struct in_addr *)(he->h_addr_list[0]))->s_addr );
	printf("%d.%d.%d.%d\n",
	(add & 0xff000000)>>24,
	(add & 0x00ff0000)>>16,
	(add & 0x0000ff00)>>8,
	(add & 0x000000ff)
	);


	return(0);
}