--- orig/test_DHTXXD.c	2016-02-16 22:53:10.000000000 -0500
+++ test_DHTXXD.c	2016-06-21 19:59:39.290481549 -0400
@@ -125,7 +125,7 @@
 
 void cbf(DHTXXD_data_t r)
 {
-   printf("%d %.1f %.1f\n", r.status, r.temperature, r.humidity);
+   printf("%d %.1f C %.1f %%\n", r.status, r.temperature, r.humidity);
 }
 
 int main(int argc, char *argv[])
@@ -155,6 +155,9 @@
       DHTXXD_cancel(dht); /* Cancel DHTXX. */
 
       pigpio_stop(pi); /* Disconnect from local Pi. */
+   } else {
+	fprintf(stderr, "ERROR: pigpiod not running\n");
+	return 1;
    }
    return 0;
 }