C++ Windows에서 MAC Address 얻기

#include <WinSock.h> #include <IPHlpApi.h>                       // for GetAdaptersInfo() #pragma comment(lib, "iphlpapi.lib" ) int _tmain(int argc, _TCHAR* argv[]) {     char strMac[256];     DWORD size = sizeof(PIP_ADAPTER_INFO);     PIP_ADAPTER_INFO Info;     ZeroMemory(&Info, size);     int result = GetAdaptersInfo(Info, &size);        // 첫번째 랜카드 MAC address 가져오기     if (result == ERROR_BUFFER_OVERFLOW) // GetAdaptersInfo가 메모리가 부족하면 재 할당하고 재호출     {        Info = (PIP_ADAPTER_INFO)malloc(size);        GetAdaptersInfo(Info, &size);     }     if (!Info)        return 0;     sprintf(strMac, "%0.2X-%0.2X-%0.2X-%0.2X-%0.2X-%0.2X",        Info->Address[0], Info->Address[1], Info->Address[2], Info->Address[3], Info->Address[4], Info->Address[5]);     printf(strMac);     return 0; }