Getting an anoyying error

[limitedaura]

//error//
error lnk2019 unresolved external symbol

//code//

main.cpp-
#include <iostream>
#include <Windows.h>
#include <string>
#include <conio.h>
#include <MMSystem.h>
#include <winsock.h>
#include "Server.h"
#include "common.h"
#include "World.h"
#include "hero.h"
#include "Function.h"
using namespace std;


void main(){
int a;
cout << "You have woken up in a strange place you must escape... lets look around" << endl;
bool hero_win = false;

server();

// Create map //
world dungeon;
world tdungeon;
worldinit(dungeon);
//Fighting variables//
int havelost;

//define characters//
hero simon;
simon.name = "Simon";
simon.keys = 0;
simon.health = 100;
simon.damage = 10;
simon.x = 11;
simon.y = 9;

enemy goblin;
enemy badguy;

goblin.health = 100;
goblin.damage = 4;
goblin.x = 4;
goblin.y = 4;

char key = 0;
while (key != 'q'){
drawworld(dungeon, simon, 20, 40);

cout.clear();

//move the player, controls ect.
cout << "x:" << simon.x << "; y:" << simon.y << endl;
cout << "Keys:" << simon.keys << endl;
cout << "health:" << simon.health << endl;
cout << "damage:" << simon.damage << endl;
cout << "Move (a/w/s/d):" << endl;

key = _getch();

int dx = 0, dy = 0;

switch (key)
{
case 's':
dy = 1;
break;

case 'w':
dy = -1;
break;

case 'a':
dx = -1;
break;

case 'd':
dx = 1;
break;

default:
continue;
}


if (dx != 0 || dy != 0) {
heromove(dungeon, simon, goblin, dx, dy);
}


if (dungeon.map[simon.y][simon.x] == 3){
cout << "YOU WIN" << endl;
system("pause");
simon.x = 11;
simon.y = 10;
worldinit(dungeon);
}
}
}

void opendoor(hero& _hero, world& _world, int ny, int nx){
if (_hero.keys == 1 || _hero.keys > 1){
_world.map[nx][ny] = 0;
}

}

server.h-

#ifndef SIMON_SERVER_H
#define SIMON_SERVER_H

int server();

#endif

server.cpp-
#include <winsock.h>
#include "common.h"
#include "Function.h"
#include "Hero.h"
#include "World.h"
using namespace std;

int server(){

WSAData wsa;
WORD Version = MAKEWORD(2, 1);

WSAStartup(Version, &wsa);

SOCKET Listeen = socket(AF_INET, SOCK_STREAM, NULL);
SOCKET Connect = socket(AF_INET, SOCK_STREAM, NULL);

SOCKADDR_IN Server;

Server.sin_addr.s_addr = inet_addr("192.168.0.1");
Server.sin_family = AF_INET;
Server.sin_port = htons(100);

bind(Listeen, (SOCKADDR*)&Server, sizeof(Server));

listen(Listeen, 1);

int size = sizeof(Server);

cout << "Listening" << endl;

for (;;)
{
if (Connect = accept(Listeen, (SOCKADDR*)&Server, &size)){
cout << "Connection was reached" << endl;
break;
}
}
WSACleanup();
cin.get();
return 0;
}

//More error info//
Error 4 error LNK2019: unresolved external symbol _accept@12 referenced in function "int __cdecl server(void)" (?server@@YAHXZ) C:\Users\Ifyournotsimonleave\Desktop\C++\simonworld\Sample\Server.obj Sample
Error 5 error LNK2019: unresolved external symbol _bind@12 referenced in function "int __cdecl server(void)" (?server@@YAHXZ) C:\Users\Ifyournotsimonleave\Desktop\C++\simonworld\Sample\Server.obj Sample
Error 6 error LNK2019: unresolved external symbol _htons@4 referenced in function "int __cdecl server(void)" (?server@@YAHXZ) C:\Users\Ifyournotsimonleave\Desktop\C++\simonworld\Sample\Server.obj Sample
Error 7 error LNK2019: unresolved external symbol _inet_addr@4 referenced in function "int __cdecl server(void)" (?server@@YAHXZ) C:\Users\Ifyournotsimonleave\Desktop\C++\simonworld\Sample\Server.obj Sample
Error 8 error LNK2019: unresolved external symbol _listen@8 referenced in function "int __cdecl server(void)" (?server@@YAHXZ) C:\Users\Ifyournotsimonleave\Desktop\C++\simonworld\Sample\Server.obj Sample
Error 9 error LNK2019: unresolved external symbol _socket@12 referenced in function "int __cdecl server(void)" (?server@@YAHXZ) C:\Users\Ifyournotsimonleave\Desktop\C++\simonworld\Sample\Server.obj Sample
Error 10 error LNK2019: unresolved external symbol _WSAStartup@8 referenced in function "int __cdecl server(void)" (?server@@YAHXZ) C:\Users\Ifyournotsimonleave\Desktop\C++\simonworld\Sample\Server.obj Sample
Error 11 error LNK2019: unresolved external symbol _WSACleanup@0 referenced in function "int __cdecl server(void)" (?server@@YAHXZ) C:\Users\Ifyournotsimonleave\Desktop\C++\simonworld\Sample\Server.obj Sample
Error 12 error LNK1120: 8 unresolved externals C:\Users\Ifyournotsimonleave\Desktop\C++\simonworld\Debug\Sample.exe 1 1 Sample

[helios]

As explained in the winsocks documentation, you have to link in Ws2_32.lib

[c0d34w4y]

You need to link the actual socket library (not enough to just include the winsock.h): ws2_32.lib

Add this in your code (top of file):
#pragma comment(lib,"Ws2_32.lib")

or

Open the Project properties, go to Linker -> Input, and the add the ws2_32.lib to Additional Dependencies edit line.

[limitedaura]

Thanks it worked :)