/* addr2i */

#include <stdio.h>
#include <netdb.h>
//#include <sys/socket.h>
//#include <netinet/in.h>
            

main(int argc, char *argv[]) {

   struct hostent *hp;
   long inaddr;

   if (argc != 2) {
      fprintf(stderr,"Usage: %s <ipaddr or hostname>\n",argv[0]);
      return 0;
   }
   if ( (hp = gethostbyname(argv[1])) == NULL ) {
      if ( (inaddr = inet_addr( argv[1] )) == -1) {
         fprintf(stderr,"Error: gethostbyname %s\n", argv[1]);
      }
   } else {
      inaddr = *((int*)(hp->h_addr_list[0]));
   }
   fprintf(stdout,"0x%x\n",inaddr);
   return 0;
}