<p><b>@benpicco</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/11486#discussion_r286510786">examples/hello-world/main.c</a>:</p>
<pre style='color:#555'>>  
 int main(void)
 {
     puts("Hello World!");
 
-    printf("You are running RIOT on a(n) %s board.\n", RIOT_BOARD);
-    printf("This board features a(n) %s MCU.\n", RIOT_MCU);
+    printf("counter value, %d\n", counter);
+    printf("counter_zero value, %d\n", counter_zero);
+
+    while (1) {
+        printf("You are running RIOT on a(n) %s board.\n", RIOT_BOARD);
+        printf("This board features a(n) %s MCU.\n", RIOT_MCU);
+        printf("counter value, %d\n", counter++);
+        printf("counter_zero value, %d\n", counter_zero++);
</pre>
<p>I've added a dedicated (albeit pretty simple) test.<br>
How should I go about the documentation?</p>

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