[問題]請問以下的程式用LINUX泡為何獨不到FORK()和WAIT()啊

[conjure0 (有夢最美 希望相隨)]

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


int value=0;
void *runner(void *param);/* the thread*/

int main(int argc, char *argv[])
{
int pid;
pthread_t tid;
pthread_attr_t attr;

   pid=fork();

   if (pid==0){/*child process*/
      pthread_attr_init(&attr);
      pthread_create(&tid,&attr,runner,NULL);
      pthread_join(&tid,NULL);
      printf("CHILD: value = %d",value);/*LINE c*/
   }
   else if (pid>0){/*parent process*/
     wait(NULL);
     printf("PARENT: value = %d" , value);/*LINE P*/
   }
  }

  void *runner(void *param){
     value = 5;
     pthread_exit(0);
   }



 麻煩高手回答THX~

--
※ 發信站: 批踢踢實業坊(ptt.cc) 
◆ From: 140.113.241.43
推 dakiyo:沒有引入標頭檔?
→ conjure0:為何pthread_create沒辦法讀到啊?
推 richardhesid:錯別字太多
推 aguan:gcc -lpthread,  pthread_join參數錯了