Threads zad 2

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

void* myFunction(void* tid) {
    int id = *(int*) tid;
    free(tid);
    int* iters = malloc(sizeof(int));
    *iters = rand() % 10001;

    for (int i = 1; i <= *iters; i++) {
        printf("Watek %d, iteracja %d\n", id + 1, i);
    }
    pthread_exit(iters);
}

int main() {
    srand(time(NULL));
    int threadsNumber = 10;

    pthread_t* threads = calloc(threadsNumber, sizeof(pthread_t));
    int** return_vals = calloc(threadsNumber, sizeof(int*));

    for (int i = 0; i < threadsNumber; i++) {
        int* temp = malloc(sizeof(int));
        *temp = i;
        pthread_create(&threads[i], NULL, myFunction, temp);
    }

    for (int i = 0; i < threadsNumber; i++) {
        pthread_join(threads[i], (void**) (return_vals + i));
    }

    free(threads);

    long sum = 0;
    for (int i = 0; i < threadsNumber; i++) {
        sum += *return_vals[i];
    }

    free(return_vals);
    printf("Liczba iteracji: %ld\n", sum);
}