int gethostname(
char FAR *name,
int namelen
);
struct hostent FAR *gethostbyname(
const char FAR *name
);
struct hostent {
char FAR * h_name;
char FAR * FAR * h_aliases;
short h_addrtype;
short h_length;
char FAR * FAR * h_addr_list;
};
详查MSDN