--- exercises/041_pointers3.zig	2023-10-03 22:15:22.122241138 +0200
+++ answers/041_pointers3.zig	2023-10-05 20:04:07.026099654 +0200
@@ -31,7 +31,7 @@
 
     // Please define pointer "p" so that it can point to EITHER foo or
     // bar AND change the value it points to!
-    ??? p: ??? = undefined;
+    var p: *u8 = undefined;
 
     p = &foo;
     p.* += 1;