#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <pthread.h>    /* for POSIX thread */

int i=0;

void* prfunc(void* arg)
{
    for(;;) {
        i++;
        usleep(100);
    }
}

int main()
{
    int pstatus;
    pthread_t thread_n;

    pstatus = pthread_create(&thread_n,NULL,prfunc,(void *)NULL);
    if(pstatus!=0){
        fprintf(stderr,"pthread_create:%s\n",strerror(pstatus));
        exit(-1);
    }
    for(;i<100;){
        printf("%d\n",i);
    }
    return 0;
}