#include <stdio.h>
#include <pthread.h>
pthread_mutex_t mutex;
int counter = 0;

void odejmowanie() {
    pthread_mutex_lock(&mutex);
    for(int i = 0; i < 100000; i++) {
        counter--;
		 printf("%d ", counter);
    }
    pthread_mutex_unlock(&mutex);
}

void dodawanie() {
    pthread_mutex_lock(&mutex);
    for (int i = 0; i < 100000; i++) {
        counter++;
		 printf("%d ", counter);
    }
    pthread_mutex_unlock(&mutex);
}

void main() {
    pthread_t dod, odej;
    pthread_mutex_init(&mutex, 0);
    int result;
    pthread_create(&dod, NULL, dodawanie, NULL);
    pthread_create(&odej, NULL, odejmowanie, NULL);
    pthread_join(dod, &result);
    pthread_join(odej, &result);
    pthread_detach(&dod);
    pthread_detach(&odej);
    printf("%d ", counter);
}