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

int counter = 5;

void* producer(void* arg){
    for(int i = 0; i < 1000000; i++){
        counter++;
    }

    return NULL;
}

void* consumer(void* arg){
    for(int i = 0; i < 1000000; i++){
        counter--;
    }

    return NULL;
}

int main(){
    pthread_t t1, t2;

    pthread_create(&t1, NULL, producer, NULL);
    pthread_create(&t2, NULL, consumer, NULL);

    pthread_join(t1, NULL);
    pthread_join(t2, NULL);

    printf("최종 Counter 값 : %d\n", counter);

    return 0;
}