#include <windows.h> 
#include <winsock2.h> 
#include <stdio.h> 
 
int main() { 
  WSADATA wsaData; 
  SOCKET RecvSocket; 
 
  int iResult; 
 
  //----------------------------------------------- 
  // Initialize Winsock 
  iResult = WSAStartup(MAKEWORD(2,2), &wsaData); 
  if (iResult != 0) { 
      printf("WSAStartup failed: %d\n", iResult); 
      return 1; 
  } 
 
 
  //----------------------------------------------- 
  // Create a socket  
  RecvSocket = WSASocket(AF_INET,  
    SOCK_DGRAM,  
    IPPROTO_UDP,  
    NULL,  
    0,  
    WSA_FLAG_OVERLAPPED); 
 
  if (RecvSocket == INVALID_SOCKET) { 
      printf("WSASocket call failed with error: %ld\n", WSAGetLastError()); 
      WSACleanup(); 
      return 1; 
  } 
}