int main(void)
{
  char domain[20], index_url[100];

  printf("Enter a domain name: ");
  scanf("%s", domain);
  build_index_url(domain, index_url);
  printf("Index url: %s\n", index_url); 

  return 0;
}
int main (int argc, char *argv[])
{
	if (argc != 2) {
		fprintf(stderr, "Usage: %s <domain>\n", argv[0]);
		return 1;
	}
	
	char url[URL_LEN];
	
	build_index_url (argv[1], url);
	
	printf("%s\n", url);
	
	return 0;
}