#include <stdio.h>
#include <stdlib.h>
#include <netdb.h>   /* for gethostbyname */

extern int errno;    /* for inet_ntop */

int main(int argc, char **argv)
{
	struct hostent *entry;
	char **p;
	char buffer[INET6_ADDRSTRLEN];
	int error;

	if (argc != 2) {
		fprintf(stderr, "%s: need hostname\n", argv[0]);
		return 1;
	}

	entry = getipnodebyname(argv[1], AF_INET6, AI_DEFAULT, &error);
	if (entry == NULL) {
		fprintf(stderr, "%s: error %d from getipnodebyname\n",
			argv[0], error);
		return 2;
	}

	switch (entry->h_addrtype) {
	case AF_INET:
	case AF_INET6:
		for (p = entry->h_addr_list; *p != NULL; ++p) {
			if (inet_ntop(entry->h_addrtype, *p,
				buffer, sizeof buffer) == NULL) {

				perror(argv[0]);
				return 3;
			}
			printf("%s\n", buffer);
		}
		break;

	default:
		fprintf(stderr, "%s: unknown address type %d\n",
			argv[0], entry->h_addrtype);
		return 4;
	}

	return EXIT_SUCCESS;
}