#include <iostream>
//#include <io.h>     //_setmode()
//#include <fcntl.h>  //
#include <string>
#include "windows.h"

// source link: https://github.com/microsoft/terminal/issues/15380

int main()
{
    using namespace std;
    auto out_cp = GetConsoleOutputCP(); // To restore output code page at exit.
    auto inp_cp = GetConsoleCP();       // To restore input  code page at exit.
    SetConsoleOutputCP(CP_UTF8); // Set console output code page to UTF-8 encoding.
    SetConsoleCP(CP_UTF8);       // Set console input  code page to UTF-8 encoding.

    cout << "Test: あああ🙂🙂🙂日本👌中文👍Кириллица" << endl; // Make sure you save your project file with 65001(UTF-8) encoding.

    // Update: Windows console UTF-8 input has been fixed in #14745.
    auto utf8 = string{};
    cout << "Enter text: ";
    cin >> utf8;
    cout << "UTF-8 text: " << utf8 << endl;

    // Outdated.
    //auto wide = wstring{};
    //auto utf8 = string{};
    //cout << "Enter text: ";
    //// stdin should be configured in order to receive wchar_t (you can't receive in UTF-8 encoding on Windows yet)
    //_setmode(_fileno(stdin), _O_U16TEXT);
    //wcin >> wide;
    //
    //// Optional: stdout should be configured to output wide strings
    //_setmode(_fileno(stdout), _O_U16TEXT);
    //wcout << L"Wide  text: " << wide << endl;
    //_setmode(_fileno(stdout), _O_TEXT); // Restore to UTF-8.
    //
    //// or convert wide-string to UTF-8 string before output it
    //utf8.resize(wide.size() * 3); // Resize utf8 buffer for the worst case.
    //auto size = WideCharToMultiByte(CP_UTF8, 0, wide.data(), (DWORD)wide.size(), utf8.data(), (DWORD)utf8.size(), 0, 0);
    //utf8.resize(size);
    //cout << "UTF-8 text: " << utf8 << endl;

    SetConsoleOutputCP(out_cp); // Restore original system code pages.
    SetConsoleCP(inp_cp);       //
    return 0;
}