[C++] Sever Problem

#include <winsock2.h>
#include <stdio.h>
#include <windows.h>
#include <iostream>

#pragma comment(lib, "Ws2_32.lib")

using namespace std;

int main( int arg, char* arvg[ ] )
{

    WSADATA wsaData;
    int iResult = WSAStartup( MAKEWORD( 2, 0 ), &wsaData );
    if( iResult != NO_ERROR )
	{
		cout << "WSAStartup failed! Error Code: " << WSAGetLastError( ) << endl;
    }
    //----------------------
    // Create a SOCKET for listening for
    // incoming connection requests.
    SOCKET ListenSocket;
	ListenSocket = socket( AF_INET, SOCK_DGRAM, IPPROTO_IP );
    if( ListenSocket == INVALID_SOCKET )
	{
        cout << "Socket failed! Error Code: " << WSAGetLastError( ) << endl;
        WSACleanup( );
        return 1;
    }
    //----------------------
    // The sockaddr_in structure specifies the address family,
    // IP address, and port for the socket that is being bound.
    sockaddr_in service;
    service.sin_family = AF_INET;
	char ip[ ] = "127.0.0.1/0";
    service.sin_addr.s_addr = inet_addr( reinterpret_cast< const char* >( &ip ) );
    service.sin_port = ntohs( 2011 );

    if( bind( ListenSocket, reinterpret_cast< SOCKADDR* >( &service ), sizeof ( service ) ) == SOCKET_ERROR )
	{
        cout << "Bind failed! Error Code: " << WSAGetLastError( ) << endl;
        closesocket( ListenSocket );
        WSACleanup( );
        return 1;
    }
    //----------------------
    // Listen for incoming connection requests.
    // on the created socket
    if( listen( ListenSocket, 1 ) == SOCKET_ERROR )
	{
        cout << "Listen failed! Error Code: " << WSAGetLastError( ) << endl;
        closesocket( ListenSocket );
        WSACleanup( );
        return 1;
    }
    //----------------------
    // Create a SOCKET for accepting incoming requests.
    SOCKET AcceptSocket;
    cout << "Wait for connection..." << endl;

    //----------------------
    // Accept the connection.
    AcceptSocket = accept( ListenSocket, NULL, NULL );
    if( AcceptSocket == INVALID_SOCKET )
	{
        cout << "Accept failed! Error Code: " << WSAGetLastError( ) << endl;
        closesocket( ListenSocket );
        WSACleanup( );
        return 1;
    }
	else
	{
		cout << "Da ist was... :D" << endl;
	}

    // No longer need server socket
    closesocket( ListenSocket );
    WSACleanup( );
    return 0;
}

service.sin_addr.s_addr = inet_addr( reinterpret_cast< const char* >( ip ) );

const char ip[ ] = "127.0.0.1";

socket( AF_INET, SOCK_DGRAM, IPPROTO_IP );