GetPrivateProfileString() problem

[C++ Programming]

What is woring in my following codes run time error is occuring for both code

int main()
{LPTSTR strResult;
LPTSTR strDefault=L"no";

DWORD d=255;
GetPrivateProfileString(L"data",L"Patchcab ",
strDefault,strResult,d,
L"D:\\TMP\\patchpolicy.ini");
printf("%s",strResult);

}

int main()
{
LPTSTR strResult=L"";
LPTSTR strDefault=L"no";

DWORD d=255;
GetPrivateProfileString(L"data",L"Patchcab ",strDefault,strResult
,d,L"D:\\TMP\\patchpolicy.ini");
printf("%s",strResult);
}