#include<pthread.h>
#include<stdio.h>
#include<stdlib.h>
#define NUM_THREADS 1

int valor_global;
int end_threads;

void *Thread_Um()
{
    printf("valor entrar: %d\n", valor_global);
    valor_global = 99 ;
    printf("valor apos: %d\n", valor_global);
    end_threads++;
    pthread_exit(NULL);
}

    int main(int argc, char *argv[])
    {
        end_threads = 0;
        pthread_t thread;

        valor_global = 10;

        printf("valor antes %d\n", valor_global);
        pthread_create(&thread, NULL, Thread_Um, NULL);

        while(end_threads < NUM_THREADS);
            printf("valor depois %d\n", valor_global);

        pthread_exit(NULL);
    }