C++获取MAC与IP

#include <Nb30.h>
#pragma comment(lib,"ws2_32.lib")
#pragma comment(lib,"netapi32.lib")
std::string GetMac()
{
    NCB ncb;
    typedef struct _ASTAT_
    {
        ADAPTER_STATUS   adapt;
        NAME_BUFFER   NameBuff[];
    }ASTAT, *PASTAT;

    ASTAT Adapter;
    typedef struct _LANA_ENUM
    {
        UCHAR length;
        UCHAR lana[MAX_LANA];
    }LANA_ENUM;
    LANA_ENUM lana_enum;
    UCHAR uRetCode;
    memset(&ncb, , sizeof(ncb));
    memset(&lana_enum, , sizeof(lana_enum));

    ncb.ncb_command = NCBENUM;
    ncb.ncb_buffer = (unsigned char *)&lana_enum;
    ncb.ncb_length = sizeof(LANA_ENUM);
    uRetCode = Netbios(&ncb);
    if (uRetCode != NRC_GOODRET)
        return "";

    for (int lana = ; lana<lana_enum.length; lana++)
    {
        ncb.ncb_command = NCBRESET;
        ncb.ncb_lana_num = lana_enum.lana[lana];
        uRetCode = Netbios(&ncb);
        if (uRetCode == NRC_GOODRET)
            break;
    }
    if (uRetCode != NRC_GOODRET)
        return "";

    memset(&ncb, , sizeof(ncb));
    ncb.ncb_command = NCBASTAT;
    ncb.ncb_lana_num = lana_enum.lana[];
    strcpy_s((char*)ncb.ncb_callname, , "*");
    ncb.ncb_buffer = (unsigned char *)&Adapter;
    ncb.ncb_length = sizeof(Adapter);
    uRetCode = Netbios(&ncb);
    if (uRetCode != NRC_GOODRET)
        return "";
    char mac[];
    sprintf_s(mac, , "%02X-%02X-%02X-%02X-%02X-%02X",
        Adapter.adapt.adapter_address[],
        Adapter.adapt.adapter_address[],
        Adapter.adapt.adapter_address[],
        Adapter.adapt.adapter_address[],
        Adapter.adapt.adapter_address[],
        Adapter.adapt.adapter_address[]
    );
    return mac;
}
std::string GetLanIP()
{
    WSADATA wsaData;
    char name[];
    char *ip;
    PHOSTENT hostinfo;
    if (WSAStartup(MAKEWORD(, ), &wsaData) == )
    {
        if (gethostname(name, sizeof(name)) == )
        {
            if ((hostinfo = gethostbyname(name)) != NULL)
            {
                ip = inet_ntoa(*(struct in_addr *)*hostinfo->h_addr_list);
                printf(" IP地址: %s ", ip);
            }
        }
        WSACleanup();
    }
    return ip;
}