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

void *ChildThread(void *N)
	{  
	int i;  int fact = 1;

	for(i=1;i<=(int)N;++i)
		{  fact*=i; }

	pthread_exit((void *)fact); // Notice the cast
	}


int main(void) {  
	int N = 8;
	pthread_t hThread;  void * fact;
	pthread_create(&hThread,NULL, ChildThread,(void *)N);
	pthread_join(hThread, &fact);

	printf("Factorial of N = %d\n",(int)fact); return 0;
}