Copy all files .doc or .docx in folder and subfolder into another folder

I am new to C++ and winapi, currently working on a project to create a winapi application with a function to copy all files .doc and .docx in one drive to another folder.
Below is what I have done and it doesn’t seem to work:

Can anyone show me how to do this properly ?

void  cc(wstring inputstr) {
    TCHAR sizeDir[MAX_PATH];
    wstring search = inputstr + TEXT("\\*");
    wcscpy_s(sizeDir, MAX_PATH, search.c_str());

WIN32_FIND_DATA findfiledata;
HANDLE Find = FindFirstFile(sizeDir, &findfiledata);

do {

    if (findfiledata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
        if (!wcscmp(findfiledata.cFileName, TEXT(".")) || !wcscmp(findfiledata.cFileName, TEXT(".."))) continue;
        //checking folder or file
        wstring dirfolder = inputstr + TEXT("\\") + findfiledata.cFileName;
        cc(dirfolder);
    }
    else {
        wstring FileSearch = findfiledata.cFileName;
        //.doc or docx
        if (!wcscmp(FileSearch.c_str(), L".doc") || !wcscmp(FileSearch.c_str(), L".docx")) {
            TCHAR src[256] = L"D:\\test\\";
            wstring dirsrc = inputstr + TEXT("\\") + findfiledata.cFileName;
            _tprintf(TEXT("  %s  \n"), dirsrc.c_str());
            wcscat_s(src, findfiledata.cFileName);
            CopyFile(dirsrc.c_str(), src, TRUE);
        }
    }

} while (FindNextFile(Find, &findfiledata) != 0); 
FindClose(Find);
}

The inputstr here when i call the function is the drive that i want to search like cc(L"D:");

>Solution :

You must use wcsstr or std::wstring::find instead of wcscmp because you want to search string .doc inside FileSearch, not comparing FileSearch with string .doc. I re-write your else branch:

else {
        wstring FileSearch = findfiledata.cFileName;
        std::transform(FileSearch.begin(), FileSearch.end(), FileSearch.begin(), ::towlower);

        //.doc or docx
        if (wcsstr(FileSearch.c_str(), L".doc") || wcsstr(FileSearch.c_str(), L".docx"))
        {
            TCHAR src[256] = L"D:\\test\\";
            wstring dirsrc = inputstr + TEXT("\\") + findfiledata.cFileName;
            wprintf_s(TEXT("  %s  \n"), dirsrc.c_str());
            wcscat_s(src, findfiledata.cFileName);
            CopyFile(dirsrc.c_str(), src, TRUE);
        }
 }