#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>

#define NUM_THREADS 500

pthread_t pts[NUM_THREADS+1];
int freiePlaetze = 100;

void * status(){
    int z = 0;
    while (z == 0){
        sleep(1);
        printf("Freie Plaetze: %d", freiePlaetze);
    }
}

void * parke(){
    freiePlaetze--;
    srand(time(NULL));
    int parkdauer = rand() % 4 + 1;
    sleep(parkdauer);
    freiePlaetze++;
    pthread_exit(NULL);
}

int main() {

    // Statusthread erzeugen
    pthread_create(&pts[500], NULL, status, NULL);

    // Autos erzeugen
    int i;
    for (i=0; i < NUM_THREADS; i++) {
        if (freiePlaetze > 0){
            pthread_create(&pts[i], NULL, parke, NULL);
        }
    }

    return 0;
}