Prime

// Prime.cpp : Diese Datei enthält die Funktion "main". Hier beginnt und endet die Ausführung des Programms.
//#include <Windows.h>
#include <stdio.h>
#include <iostream>
#include <time.h>
#include <thread>
#include <vector>
#include <cstdlib>
#include <string>
#include <string.h>
#include <fstream>
//#include <mutex>
//#include <chrono>
int treffer[1000000];
double istime = 0.0;

int arraylastvaltest(int array[])
{
    int i;
    for (i = 0; i < sizeof(array) / sizeof(int) - 1; i++)
    {
        if (array[i] == NULL)
        {
            break;
        }
    }
    return i;
}

int arraylastval()
{
    int i;
    for (i = 0; i < sizeof(treffer) / sizeof(int) - 1; i++)
    {
        if (treffer[i] == NULL)
        {
            break;
        }
    }
    return i;
}

void sort()
{

    int sortirentemp[10000];
    for (int i = 0; i < 10000; i++)
    {
        for (int i = 0; i < 10000; i++)
        {
            if (i == treffer[i])
            {
                sortirentemp[arraylastvaltest(sortirentemp)] = treffer[i];
            }
        }
    }
    for (int i = 0; i < arraylastvaltest(sortirentemp); i++)
    {
        treffer[i] = sortirentemp[i];
    }
/*  //int sortirentemp[1000000];
    int maxval = arraylastval();
    int minval = 0;
    for (int i = 0; i < maxval; i++)
    {
        for (int i = 0; i < 1000000 || minval >= maxval || maxval != 0; i++)
        {
            if (treffer[i] < maxval)
            {
                maxval = treffer[i];
            }
            if (maxval <= 2)
            {
                break;
            }
        }
        std::cout << maxval << std::endl;
        //sortirentemp[i] = maxval;
        minval = maxval;
    }*/
}

void Prime(int minprime, int maxprime)
{
    double time1 = 0.0, tstart;
    tstart = clock();

    for (int zahl = minprime; zahl < maxprime; zahl++)
    {
        bool isPrime = 1;
        int teiler = 2;
        while (teiler < zahl)
        {
            if (zahl % teiler == 0)
            {
                isPrime = 0;
                break;
            }
            teiler++;
        }
        if (isPrime != 0)
        {
            treffer[arraylastval()] = zahl;
        }
    }

    //std::cout << "  tstart = " << tstart << " sec." << "  time1 = " << clock() << std::endl;

    time1 += clock() - tstart;     // end
    time1 = time1 / CLOCKS_PER_SEC;
    istime += time1;
    /*if (true == false)
    {
    printf("Alle Treffer: ");

    for (int i = 0; i < sizeof(treffer) / sizeof(int) - 1; i++)
    {
        if (treffer[i] == NULL)
        {
            break;
        }
        else
        {
            if (treffer[i] != 2)
            {
                std::cout << ", ";
            }
        }
        std::cout << treffer[i];
    }

    std::cout << "  minprime = " << minprime << " maxprime = " << maxprime << std::endl;
    std::cout << "  time = " << time1 << " sec." << std::endl;
    }*/
}

void thrads(int minprime, int maxprime, int threads)
{
    int threadSpread = maxprime / threads;
    int newEnd = minprime + threadSpread - 1;

    std::vector<std::thread> ThreadVector;

    for (int i = 0; i < threads; i++)
    {
        //std::thread t(Prime,minprime, newEnd);
        //t.join();

        ThreadVector.emplace_back(Prime, minprime, newEnd);
        minprime += threadSpread;
        newEnd += threadSpread;
    }

    for (auto& t : ThreadVector)
    {
        t.join();
    }

    /*pthread_t threads[8];
    for (int i = 0; i < threads; i++)
    {
        std::thread t(Prime,minprime, newEnd);
        t.join();
        //t.detach();
        minprime += threadSpread;
        newEnd += threadSpread;
    }*/
}


int main(int argc, char* argv[])
{
    int minprime = 2;
    int maxprime = 999999;
    int threads = 8;
    for (int i = 0; i < argc; i++)
    {
        // Ausgabe aller Parameter
        std::cout << i << " \"" << argv[i] << "\"" << std::endl;
        // Auf speziellen Parameter prüfen
        if (strcmp(argv[i], "-help") == 0)
        {
            std::cout << "Beispiel Kommando: -minprime 2 -maxprime 200000 -threads 8" << std::endl;
            return EXIT_SUCCESS;
        }
        else if (strcmp(argv[i], "-debug") == 0)
        {
            std::cout << "\n\nDebug Modus gesetzt!" << std::endl;
            return EXIT_SUCCESS;
        }
        else if (strcmp(argv[i], "-minprime") == 0)
        {
            minprime = strtol(argv[i + 1], NULL, 10);
        }
        else if (strcmp(argv[i], "-maxprime") == 0)
        {
            maxprime = strtol(argv[i + 1], NULL, 10);
        }
        else if (strcmp(argv[i], "-threads") == 0)
        {
            threads = strtol(argv[i + 1], NULL, 10);
        }
        else
        {
            std::cout << "Beispiel Kommando: -minprime 2 -maxprime 200000 -threads 8" << std::endl;
        }

    }

    //std::cin.get();
    //return EXIT_SUCCESS;

    std::cout << "minprime = " << minprime << " maxprime = " << maxprime  << " threads = " << threads <<  std::endl;

    if (maxprime >= 1000000)
    {
        std::cout << "Deine gewählte Zahl" << maxprime << "überschreitet das Maximum von 1000000." << std::endl;
        return EXIT_SUCCESS;
    }
    else if (minprime > maxprime)
    {
        std::cout << "Der Minimalwert darf nicht größer sein als der Maximalwert." << std::endl;
        return EXIT_SUCCESS;
    }
    else if (maxprime < 2)
    {
        std::cout << "Der Maximalwert darf unter 2 liegen." << std::endl;
        return EXIT_SUCCESS;
    }
    else if (threads == 0)
    {
        std::cout << "Die Anzahl der Threads muss mindestens bei 1 festgelegt werden." << std::endl;
        return EXIT_SUCCESS;
    }
    else if (minprime < 2)
    {
        std::cout << "Der Minimalwert wurde auf 2 festgelegt." << std::endl;
        minprime = 2;
    }

    double time1 = 0.0, tstart;
    tstart = clock();              // start
    thrads(minprime, maxprime, threads);
    std::cout << "GesamtzeitThreads = " << istime << " sec." << std::endl;
    time1 = clock() - tstart;     // end
    time1 += time1 / CLOCKS_PER_SEC;  // rescale to seconds
    std::cout << "Gesamtzeit = " << time1 << " sec." << std::endl;

    //sort();       //Sortieren

    char antwort;
    std::cout << "Möchtest du alle Treffer auflisten? Y/n" << std::endl;
    std::cin >> antwort;
    if (antwort == 'y' || antwort == 'Y')
    {
        printf("Alle Treffer: ");

        for (int i = 0; i < sizeof(treffer) / sizeof(int) - 1; i++)
        {
            if (treffer[i] == NULL)
            {
                break;
            }
            else
            {
                if (treffer[i] != 2)
                {
                    std::cout << ", ";
                }
            }
            std::cout << treffer[i];
        }
    }

    std::cout << "Möchtest du alle Treffer in einer Text Datei abspeichern? Y/n" << std::endl;
    std::cin >> antwort;
    if (antwort == 'y' || antwort == 'Y')
    {
        std::ofstream schreiben;
        std::ifstream File("save.txt");
        if (!File.is_open())
        {
            //Sortieren
            schreiben.open("save.txt");
            schreiben << "Alle Treffer: ";
            for (int i = 0; i < sizeof(treffer) / sizeof(int) - 1; i++)
            {
                if (treffer[i] == NULL)
                {
                    break;
                }
                else
                {
                    if (treffer[i] != 2)
                    {
                        schreiben << ", ";
                    }
                }
                schreiben << treffer[i];
            }
            schreiben.close();
        }
        //fStream
    }
    //Prime(200000);
}