C-pthread2

#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;
 }