#include "stdio.h"

#include "pthread.h" char * test( char *data); int main()  {     pthread_t tt;     char mes[]="hello,it's work!";     int re=pthread_create(&tt,NULL,&test,mes);     if(re)      {         printf("create thread failed\n");         exit(1);      }     char *b;     pthread_join(tt,&b);     printf("the result is %s\n",b);  } char * test(char *data)  {     printf("%s pthread\n",data);     return data;  }