void* red_function(void *data) {
	///Variables declaration
	fstream f;
	string in;
	ifstream input;

	///Open readable stream
	input.open("cpp.ppm");
	///Initialize the variables
	int farbe = 0;
	int zahl = 0;
	int i = 0;
	///Read the first line
	getline(input, in);
	///Run through the file
	cout << "Hallo" << endl;
	while(!input.eof()) {
		///If an unusable string was found
		if(((signed int)in.find("#", 0) != -1) || ((signed int)in.find( "P3", 0 ) != -1)) {
			///Get the next line
			getline(input, in);
			///And continue with the next step in the while loop
			continue;
		}
		///If i is 0
		if(i == 0) {
			///Increase i
			i++;
			///and read the next line
			getline(input, in);
			continue;
			///if i is 1
		}else if(i == 1) {
			///increase i
			i++;
			///initialize a stringstream
			stringstream sstr(in);
			///and pipe it into an integer
			sstr >> zahl;
			///initialize the array for the red values
			red = new int[zahl+2];
			///put an ending condition to the end
			red[zahl+1] = -1;
			///get the next line
			getline(input, in);
			continue;
			///if i is 2
		} else if(i == 2) {
			///if farbe is 0, increase the value in the array for the red values
			///at the position of the fitting value
			if(farbe == 0) {
				stringstream sstr(in);
				sstr >> zahl;
				red[zahl] += 1;
				farbe++;
			}
			else if(farbe == 1){
				farbe++;
			}
			else if(farbe == 2) {
				cout << farbe << endl;
				farbe = 0;
			}
			getline(input, in);
			continue;
		}
	}
	///Close the input-stream
	input.close();
	///Pipe the values into the file
	f.open("red_histogram.dat", ios::out);
	for (int j = 0; red[j] != -1; j++) {
		cout << j << " " << red[j] << endl;
		f << j << " " << red[j] << endl;
	}
	f.close();
	return NULL;
}

Ich hoffe irgendwer sieht den Fehler.

Liebe Grüße

René

Für mich ist unklar was in der Variablen "zahl" drin steht, wodurch dann Speicher für den int reserviert wird. (Wo wird der freigegeben? )

In der for-Schleife hab ich dann teilweise Zugriffsfehler.

Vielleicht zum Testen mal nen Inhalt zur Verfügung stellen.