Wie fange ich da an, bzw. was muss ich da machen, wo starte ich am besten?

Das Programm schaut so aus:
[code][cpp]
#include "UrgCtrl.h"
#include <cstdlib>

using namespace qrk;
using namespace std;

//! main
int main(int argc, char *argv[])
{
const char device[] = "COM4";
//const char device[] = "/dev/ttyACM0";

UrgCtrl urg;
urg.connect(device);
/* if (! urg.connect(device)) {
printf("UrgCtrl::connect: %s\n", urg.what());
getchar();
exit(1);
}*/

// GD ƒRƒ}ƒ“ƒh‚ÅŽw’肳‚ꂽ‰ñ�”‚¾‚¯ƒXƒLƒƒƒ“‚ð�s‚¢�A�o—Í‚·‚é
enum { CaptureTimes = 1 };
double values[725];
for (int i = 0; i < CaptureTimes; ++i)
{
long timestamp = 0;
vector<long> data;

// Žæ“¾
int n = urg.capture(data, &timestamp);

// �o—Í
// printf("timestamp: %ld\n", timestamp);
FILE *ziel;
ziel = fopen("array.txt","w");
for (int j = 0; j < n; ++j)
{
values[j]=data[j];
fprintf(ziel,"%i",j);
fprintf(ziel,"%g",values[j]);

fprintf (ziel,"\n");

}
fclose(ziel);
}
getchar();
return 0;
}
[code]

Bin für alle Hilfen dankbar.

Ben

http://www.c-plusplus.net/forum/viewtopic-var-t-is-237242-and-highlight-is-socket+tutorial.html

http://www.c-plusplus.net/forum/viewtopic-var-t-is-245210-and-start-is-0.html

#include <windows.h>
#include <winsock.h>
#include <stdlib.h>
#include <stdio.h>

int main()
{
WSADATA wsa;
struct sockaddr_in addr;
int rc;
int s;
int senden;

char text[]={"Nachricht"};
struct sockaddr_in {
	short int sin_family;
	unsigned short int sin_port;
	struct in_addr sin_addr;
	unsigned char pad[8];
					};

addr.sin_family = AF_INET;
addr.sin_port = htons(399);
addr.sin_addr.s_addr = inet_addr("127.0.0.1");

s = socket(AF_INET,SOCK_STREAM,0);

//rc=connect(s,(SOCKADDR*)&addr,sizeof(SOCKADDR)); 

senden = send(s,text,strlen(text),0);

system("PAUSE");
return 0;
}

Der Socket hat immer den Fehlerwert -1. Ich verstehe es nicht ganz.