线程的创建pthread_create.c

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

 void *pthread_fun(void *arg)
 {
   int b;
   b = *(int *)arg;
   printf("b = %d \n",b);
   int i =  ;
   while(i > )
    {
      printf("pthread start \n");
      sleep();
      i -- ;
    }
 }
 int main()
 {
      pthread_t pthread;
      int a =;
 #if 0
      if (pthread_create(&pthread,NULL,pthread_fun,NULL) < )
       {
           perror("fail to pthread_create");
           exit();
       }
 #endif
 #if 1
     if (pthread_create(&pthread,NULL,pthread_fun,&a) < )
     {
        perror("fail to pthread_create");
        exit();
     }
 #endif
     printf("pthread create success\n");
     pthread_join(pthread,NULL);//等待线程的退出
     printf("pthread exit \n");
     return ;
 }