Shell Programming and Scripting

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

void *fork_thread(void *ptr );

main()
{
     pthread_t thread1;

     char *message1 = "Thread 1";
     int  iret1;
iret1 = pthread_create( &thread1, NULL, fork_thread, (void*) message1);

exit(0);
}
Void *fork_thread( void *ptr )
{

    int x=10;
    char *message;
    message = (char *) ptr;
     printf("%s \n", message);
       printf(" is %d",x);
}

void *fork_thread( void *ptr ) // not Void