#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<sys/types.h>
#include<unistd.h>
#include <pthread.h>
void *mythread(void *arg)
{
	printf("id==[%ld]\n",pthread_self());
}
int main()
{
//定义pthread_attr_t类型的变量
	pthread_attr_t attr;
//初始化attr变量
	pthread_attr_init(&attr);
//设置attr为分离属性
	pthread_attr_setdetachstate(&attr,PTHREAD_CREATE_DETACHED);
	//int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
	// void *(*start_routine) (void *), void *arg);
	pthread_t thread;
	int ret=pthread_create(&thread,&attr,mythread,NULL);
	if(ret!=0)
	{
		printf("pthread_create error:[%s]\n",strerror(ret));
		return -1;
	}
//验证子线程是否为分离状态，如果是分离状态，pthread_join不会阻塞，立即打印错误
	ret=pthread_join(thread,NULL);
	if(ret!=0)
	{
		printf("prhread_join error:[%s]\n",strerror(ret));
	}
	printf("father thread id==[%ld]\n",pthread_self());
//释放线程属性
	pthread_attr_destroy(&attr);
//防止主线程结束，子线程还没有执行
	sleep(1);
}

结果：