gethostbyname的2种用法得到IP（字符型和bigendian整数型）

BOOL DomainToIP(char *Domain,char *toIP)  //由域名得到IP地址  {  HOSTENT *host_entry;  host_entry=gethostbyname(Domain);  if(host_entry!=0)  {  sprintf(toIP,"%d.%d.%d.%d",  (host_entry->h_addr_list[0][0]&0xff),  (host_entry->h_addr_list[0][1]&0xff),  (host_entry->h_addr_list[0][2]&0xff),  (host_entry->h_addr_list[0][3]&0xff));  }  else  {  return FALSE;  }  return TRUE;  }

void Init(char*hostname,unsigned short port){WSAStartup(0x0202,&m_wsa);struct hostent* host;host =gethostbyname(hostname);if(host==NULL){MessageBox(NULL,TEXT("unable to resolve host name"),TEXT("warning"),MB_OK);PostQuitMessage(0);}m_IP=*((unsigned long*)host->h_addr);m_port=htons(port);m_addr.sin_port=m_port;m_addr.sin_family=AF_INET;m_addr.sin_addr.s_addr=m_IP;};