dnsresolve.c
author Markus Bröker <mbroeker@largo.dyndns.tv>
Sat, 13 Dec 2008 17:58:00 +0100
changeset 8 96d16dfe787a
parent 0 af501b0c1716
child 9 c3fecc82ade6
permissions -rw-r--r--
We use return EXIT_SUCCESS instead of return 0 committer: Markus Bröker <mbroeker@largo.homelinux.org>

/**
 *     $Id: dnsresolve.c,v 1.1.1.1 2008-04-28 17:32:53 mbroeker Exp $
 * $Source: /development/c/demos/dnsresolve.c,v $
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>
#include <netdb.h>

int main (int argc, char **argv)
{
    struct hostent *he;
    char *ip;

    int i = 0;

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

    he = gethostbyname (argv[1]);
    ip = NULL;

    if (he != NULL) {
        while (he->h_addr_list[i] != NULL) {
            ip = inet_ntoa (*((struct in_addr *)he->h_addr_list[i]));
            printf ("%s: %s\n", argv[1], ip);
            i++;
        }
    }

    return EXIT_SUCCESS;
}