VC++ 獲得主機名與IP

char hostName[256];
gethostname(hostName,256);
char hostAddress[256];
HOSTENT *hostEntry;
hostEntry=gethostbyname(hostName);
wsprintf(hostAddress , "%d.%d.%d.%d" ,
                (hostEntry>h_addr_list[0][0]&0x00ff) ,
                (hostEntry->h_addr_list[0][1]&0x00ff) ,
                (hostEntry->h_addr_list[0][2]&0x00ff) ,
                (hostEntry->h_addr_list[0][3]&0x00ff)
            );

感謝：http://viking.blog.51cto.com/272298/57234