I'm using G++ in Ubuntu 11.04 and I face the following error in in compiling this simple client server communication program.

ahmad@ahmad-ThinkCentre-S51:~/jan$ g++ clint.cpp -o myclient.exe clint.cpp:11:20: fatal error: winsock.h: No such file or directory compilation terminated.

my code is:-

include<iostream>

include<conio.h>

include<winsock.h>

include<stdlib.h>

include<fstream>

using namespace std;

pragma comment(lib, "winmm.lib")

pragma comment(lib, "wsock32.lib")

pragma comment(lib, "advapi32.lib")

define NETWORK_ERROR -1 //define some constants

define NETWORK_OK 0 //for error handling

int main()

{

int nret; //for error handling

WSADATA WsaDat;

//The WSADATA structure contains information about the Windows Sockets implementation

WSAStartup(MAKEWORD(1,1),&WsaDat);

SOCKET mysocket;

mysocket = socket( AFINET, SOCKDGRAM, IPPROTO_UDP );

if( mysocket == INVALID_SOCKET )

{

    cout<<"Socket is not created"<<endl;

WSACleanup(); // Shutdown Winsock

return NETWORK_ERROR;  //NETWORK_ERROR is a constant, its value is -1

}

else

cout<<"Socket is created"<<endl;

SOCKADDR_IN serveraddr;

serveraddr.sinfamily=AFINET;

serveraddr.sin_port= htons(5555);

serveraddr.sinaddr.saddr= inet_addr("127.0.0.1"); //servers IP address

nret= connect (mysocket , (SOCKADDR*)(&serveraddr),sizeof(serveraddr) );

if (nret==SOCKET_ERROR)

{

cout<<"Cannot establish the connection"<<endl;< p="">

WSACleanup(); // Shutdown Winsock

return NETWORKERROR; //NETWORKERROR is a constant, its value is -1

}

else

cout<<"Connection established successfully"<<endl;< p="">

char msg[100];

char gg[100];

fstream file;

file.open("talal.txt", ios::out);

int i=0,k;

cout<<"Please enter the desired message into the file which is to be send to the server"<<endl;< p="">

cin.getline(msg,100);

file<<msg;< p="">

file.close();

file.open("talal.txt", ios::in);

file.getline(msg, 100);

k=strlen(msg);

for(i=0; i<k 2;="" i++)<="" p="">

{

gg[i]=msg[i];

msg[i]=msg[k-i-1];

msg[k-i-1]=gg[i];

}

//Sending of message

sendto(mysocket,msg,sizeof(msg),0,(SOCKADDR *)(& serveraddr),(sizeof serveraddr));

cout<<"your file has been sent to the server"<<endl;< p="">

closesocket(mysocket);

WSACleanup();

return 0;

} //end of program