Use of an iterator when comparing two wstring
wcscmp(*n,*k);

std::wstring n = L"Hello you little fello";
std::wstring k = L"little";

if ( n.find(k) != wstring::npos )
{
...
}

wcscmp(n->c_str(), k->c_str());

wstring lowN(*n);
wstring lowK(*k);

std::transform(lowN.begin(), lowN.end(), lowN.begin(), ::tolower);
std::transform(lowK.begin(), lowK.end(), lowK.begin(), ::tolower);

if ( wstring::npos != lowN->find(lowK) ) {
    // n contains k
}

n->find(*k);

wcscmp(n->c_str(),k->c_str());