C++程序  |  9行  |  553 B

#define DEBUG   1   /* enable debugging code (needed for dig) */
#define RESOLVSORT  /* allow sorting of addresses in gethostbyname */
#define RFC1535     /* comply with RFC1535 (STRONGLY reccomended by vixie)*/
#undef  USELOOPBACK /* res_init() bind to localhost */
#undef  SUNSECURITY /* verify gethostbyaddr() calls - WE DONT NEED IT  */
#define MULTI_PTRS_ARE_ALIASES 1 /* fold multiple PTR records into aliases */
#define CHECK_SRVR_ADDR 1 /* confirm that the server requested sent the reply */
#define BIND_UPDATE 1   /* update support */