Cristian

#include <windows.h>
#include <string>
#include <map>
#include <sstream>

std::wstring Compare(const std::wstring& first, const std::wstring second)
{
    int result = CompareStringW(LOCALE_INVARIANT, NORM_IGNORENONSPACE, first.c_str(), -1, second.c_str(), -1);

    std::wostringstream os;

    std::map<int, std::wstring> resultmap;
    resultmap[CSTR_LESS_THAN] = L" < ";
    resultmap[CSTR_EQUAL] = L" == ";
    resultmap[CSTR_GREATER_THAN] = L" > ";

    if (result != 0)
    {
        os << first << resultmap[result] << second;
    }
    else
    {
        os << L"ERROR at CompareString, error code: 0x" << std::hex << GetLastError();
    }

    return os.str();
}

int __stdcall WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
    std::wostringstream os;
    os << Compare(L"voila", L"voil\xE1") << std::endl;
    os << Compare(L"garcon", L"gar\xE7on") << std::endl;
    os << Compare(L"kase", L"k\xE4se") << std::endl;
    os << Compare(L"kase", L"kaese") << std::endl;
    os << Compare(L"arsita", L"ar\x15Fi\x163\x103") << std::endl;
    os << Compare(L"arsita", L"ar\x219i\x21B\x103") << std::endl;
    os << Compare(L"ar\x15Fi\x163\x103", L"ar\x219i\x21B\x103") << std::endl;

    MessageBoxW(0, os.str().c_str(), L"Comparison", 0);
}