1 /**

     2  *     $Id: dnsresolve.c,v 1.1.1.1 2008-04-28 17:32:53 mbroeker Exp $

     3  * $Source: /development/c/demos/dnsresolve.c,v $

     4  *

     5  */

     6 

     7 #include <stdio.h>

     8 #include <stdlib.h>

     9 #include <string.h>

    10 #include <arpa/inet.h>

    11 #include <netdb.h>

    12 

    13 int main (int argc, char **argv)

    14 {

    15     struct hostent *he;

    16     char *ip;

    17 

    18     int i = 0;

    19 

    20     if (argc != 2) {

    21         fprintf (stderr, "Usage: %s hostname\n", argv[0]);

    22         exit (0);

    23     }

    24 

    25     he = gethostbyname (argv[1]);

    26     ip = NULL;

    27 

    28     if (he != NULL) {

    29         while (he->h_addr_list[i] != NULL) {

    30             ip = inet_ntoa (*((struct in_addr *)he->h_addr_list[i]));

    31             printf ("%s: %s\n", argv[1], ip);

    32             i++;

    33         }

    34     }

    35 

    36     return 0;

    37 }