How to change the encoding, what's wrong?

Question

C++ / C#

Hello, I made a small program for chatting.
Here is the program server code:

#pragma comment(lib, "Ws2_32.lib")
#include<WinSock2.h>
#include<iostream>
#include<Ws2tcpip.h>
#include<ctime>

SOCKET Connect;
SOCKET* Connections;
SOCKET Listen;

int ClientCount = 0;

void SendMessageToClient(int ID) {
  char* buffer = new char[1024];
  for (;; Sleep(75)) {
    memset(buffer, 0, sizeof(buffer));
    if (recv( Connections[ID], buffer, 1024, NULL)) {
      printf(buffer);
      printf("\n");
      for (int i = 0; i <= ClientCount; i++) {
        send(Connections[i], buffer, strlen(buffer), NULL);
      }
    }
  }
  delete buffer;
}

int main() {
  setlocale(LC_ALL, "russian");
  WSAData data;
  WORD version = MAKEWORD(2, 2);
  int res = WSAStartup(version, &data);
  if (res != 0) {
    return 0;
  }

  struct addrinfo hints;
  struct addrinfo * result;

  Connections = (SOCKET*)calloc(64, sizeof(SOCKET));

  ZeroMemory(&hints, sizeof(hints));

  hints.ai_family = AF_INET;
  hints.ai_flags = AI_PASSIVE;
  hints.ai_socktype = SOCK_STREAM;
  hints.ai_protocol = IPPROTO_TCP;

  getaddrinfo(NULL, "7770", &hints, &result);

  Listen = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
  bind(Listen, result->ai_addr, result->ai_addrlen);
  listen(Listen, SOMAXCONN);

  freeaddrinfo(result);

  printf("Start server....");
  char m_connect[] = "Connect...;;;5";
  for (;; Sleep(75)) {
    if (Connect = accept(Listen, NULL, NULL)) {
      printf("Client connect...\n");
      Connections[ClientCount] = Connect;
      send(Connections[ClientCount], m_connect, strlen(m_connect), NULL);
      ClientCount++;
      CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)SendMessageToClient, (LPVOID)(ClientCount - 1), NULL, NULL);
    }
  }
  return 1;
}

one). - Pay attention to the console: what's wrong with the text? How to change the text encoding (code above).
2). - Is it possible to hide the console process and make it invisible? If yes, then throw the code how this can be implemented
Thanks in advance)

Answer 1

#include <iostream>
#include <windows.h>
#include <io.h>
#include <fcntl.h>

int main()     // wmain, получается, не обязателен
{
    std::wstring s = L"Тут курят! Błąd, kurwa!";
    // Проверка на юникодность. Если вышла бурда — такой компилятор фтопку!
    MessageBoxW(0, s.c_str(), L"Test", MB_OK);

    // Вот что надо сделать — так что не забывайте, что придётся работать не в UTF-8, а в wchar’ах
    _setmode(_fileno(stdout), _O_U16TEXT);
    std::wcout << s << std::endl;

    // Задержка
    std::cin.ignore(1);
    return 0;
}

Tested on MinGW.
With the second question - "is it possible to hide the console process and make it invisible" - the answer is simple. In the project settings, disable the production of a console program. In my Qt Creator command CONFIG += console c++11, I had to remove the word console. It is advisable (but not required) to change from an entry point
to a specific Windows-specific
What needs to be done in the project - read the doc.