#include <stdio.h>
#include <conio.h>
#include <string.h>
#define _WINSOCKAPI_
#include <windows.h>
#include <winsock2.h>
/*Далее заходим в Project Properties - Linker - Input - Additional Dependencies и вводим в эту строку WS2_32.lib*/
SOCKET MainSocket;
DWORD ID;

int main()
{
 char addr[]="192.168.0.64:3030"; //ykazivaem klientskii adres (127.0.0.1)
 WORD version=MAKEWORD(2,0);
 WSADATA wsa;
 WSAStartup(version, &wsa;);
 sockaddr_in sa;
 sa.sin_family=AF_INET;
 sa.sin_addr.s_addr=inet_addr(addr); // ukazivaem tot adres, k kakomy podsoedin9ems9
 sa.sin_port=htonl(27015); //27015 - nomer porta;
 if ( connect( MainSocket, (SOCKADDR*)&sa;, sizeof(sa) ) ) /*ystanavlivaem soedinenie s serverom. connect vozvrawaet 0 v slu4ae uda4nogo soedineni9*/
  {
   printf ("Connection failed");
   getch();
   return 0;
  }
 printf ("Connection established");
 for (;;)
  {
   int v=send(MainSocket, "abcd",5,0);
   if (!v || v==SOCKET_ERROR)
   {
    printf ("Connection failed");
    getch();
    return 0;
   }

  }
}