Just another update

Task/Character-codes/D/character-codes.d

@@ -1,13 +1,12 @@
-import std.stdio, std.utf;
-
 void main() {
+    import std.stdio, std.utf;
+
     string test = "a";
     size_t index = 0;
 
-    // Get four-byte utf32 value for index 0
-    // this returns dchar, so cast it to numeric.
-    writeln(cast(uint)test.decode(index));
+    // Get four-byte utf32 value for index 0.
+    writefln("%d", test.decode(index));
 
-    // 'index' has moved to next character position in input.
+    // 'index' has moved to next character input position.
     assert(index == 1);
 }