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

char *global_ptr;
int global_cnt = 0;

struct thread_args {
    long thread_id;
    int *stack_var; 
};

void *thread_function(void *arg) {
    struct thread_args *args = (struct thread_args *)arg;
    printf("Thread %ld: Stack variable from main = %d\n", 
            args->thread_id, *(args->stack_var));
    printf("Thread %ld: Global string = %s\n", 
            args->thread_id, global_ptr);
    global_cnt++;
    return NULL;
}

int main() {
    pthread_t threads[2];
    struct thread_args args[2];
    int main_stack_var = 42;
    global_ptr = "Hello from main thread";
    for(int i = 0; i < 2; i++) {
        args[i].thread_id = i + 1;
        args[i].stack_var = &main_stack_var;
        
        if(pthread_create(&threads[i], NULL, thread_function, &args[i]) != 0) {
            printf("Error creating thread %d\n", i);
            return 1;
        }
    }
    for(int i = 0; i < 2; i++) {
        pthread_join(threads[i], NULL);
    }
    printf("Main thread: Final global counter = %d\n", global_cnt);
    return 0;
}