The method for obtaining IP addresses for the C ++ domain name is successful !, Domain Name ip Address

The method for obtaining IP addresses for the C ++ domain name is successful !, Domain Name ip Address

 

BOOL  GetIpByDomainName(char *szHost,char szIp[100][100],int *nCount){    WSADATA        wsaData;       char           szHostname[100];       HOSTENT   *pHostEnt;       int             nAdapter   =   0;       struct       sockaddr_in   sAddr;       if   (WSAStartup(0x0101,   &wsaData))       {           AfxMessageBox("WSAStartup   failed   %s/n",   WSAGetLastError());           return FALSE;       }    pHostEnt   =  gethostbyname(szHost);    if (pHostEnt)    {        while   (   pHostEnt->h_addr_list[nAdapter]   )           {               memcpy   (   &sAddr.sin_addr.s_addr,   pHostEnt->h_addr_list[nAdapter],   pHostEnt->h_length);               char  szBuffer[1024] = {0};            sprintf(szBuffer,"%s", inet_ntoa(sAddr.sin_addr));            strcpy(szIp[nAdapter],szBuffer);            OutputDebugString(szBuffer);            nAdapter++;           }           *nCount = nAdapter;    }    else    {        DWORD  dwError = GetLastError();        CString  csError;        csError.Format("%d",dwError);        OutputDebugString(csError);        OutputDebugString("gethostbyname failed");        *nCount = 0;    }    WSACleanup();    return TRUE;   }

 

 1     int            nCount =0  ; 2     char        szIp0[100][100]; 3     char        szDomain[256] ={0}; 4     char        szIp[2048] ={0}; 5     strcpy(szDomain,"www.baidu.com"); 6     GetIpByDomainName(szDomain, szIp0,&nCount); 7     int nK = 0; 8     for (nK = 0; nK < nCount; nK++) 9     {10         strcat(szIp,szIp0[nK]);11         strcat(szIp,"\r\n");12     }13     OutputDebugString(szIp)