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

int num1=1,num2=2;
void * mythread(void * attr)        //没有加上void 的后果是非常严重的！！
{
    int * num=(int *)attr;
    printf("%d\n",*num);
}

int main(int agrc,char *argv[])
{
    pthread_t tid1,tid2;
    int status;
    status = pthread_create(&tid1,NULL,mythread,&num1);
    if(status){
        printf("create failed!");
        return -1;
    }
    
    status = pthread_create(&tid2,NULL,mythread,&num2);
    if(status){
        printf("create failed!");
        return -1;
    }
    

/*    status = pthread_join(tid1,NULL);
    if(status){
        printf("error1!");
        return -1;
    }*/
    
    status = pthread_join(tid1,NULL);
    if(status){
        printf("error2!\n");
        return -1;
    }

    return 0;
}