C / C++ / MFC

int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
                     _In_opt_ HINSTANCE hPrevInstance,
                     _In_ LPWSTR    lpCmdLine,
                     _In_ int       nCmdShow)
{
    UNREFERENCED_PARAMETER(hPrevInstance);
    UNREFERENCED_PARAMETER(lpCmdLine);

    // TODO: Place code here.

    CDatabase* pExcelDatabase = NULL;//Pointer to database
    CString csExcelFile = _T("D:\\ExcelFile.xlsx");
    CString csDSN;
    //check for file existence
    if (TRUE == ::PathFileExists(csExcelFile))// checks whether the file exists or not
    {
        csDSN.Format(_T("DRIVER=Microsoft Excel Driver (*.xls,*.xlsx);DSN='';DBQ=%s"), (LPCTSTR)csExcelFile);
    }
    else
    {
        return NULL;
    }

    //Create the database
    pExcelDatabase = new CDatabase();
    HRESULT hr;
    try // to handle exceptions on opening database
    {
        hr = pExcelDatabase->OpenEx(csDSN, CDatabase::noOdbcDialog);//open the database
    }
    catch (...)
    {
        if (pExcelDatabase)
        {
            delete pExcelDatabase;
        }
        return NULL;
    }
    // Initialize global strings
    LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
    LoadStringW(hInstance, IDC_WINDOWSPROJECT1, szWindowClass, MAX_LOADSTRING);
    MyRegisterClass(hInstance);

    // Perform application initialization:
    if (!InitInstance (hInstance, nCmdShow))
    {
        return FALSE;
    }

    HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_WINDOWSPROJECT1));

    MSG msg;

    // Main message loop:
    while (GetMessage(&msg, nullptr, 0, 0))
    {
        if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    }

    return (int) msg.wParam;
}

#include <iostream>
#include <string>

int main() {
	std::string a = "ÂÁÊËðșțâîă";
	std::cout << a;
	std::cin.get();
}