Fixed stylistic issues in extension suggestion.

diff --git a/examples/step-3/doc/results.dox b/examples/step-3/doc/results.dox
index 8d8522e7c17f4d509bd6ba6e34f1fedbfe4b7c61..f73bc56ae91ea82904e91267ff489ea1b12a0358 100644 (file)
--- a/examples/step-3/doc/results.dox
+++ b/examples/step-3/doc/results.dox
@@ -132,7 +132,7 @@ suggestions:
   (here 1e-12) of -1 and 1. Try this immediately after calling
   <code>GridGenerator::hyper_cube</code>, as before:
   @code
-  for (; cell != endc; ++cell)
+  for (const auto &cell : dof_handler.active_cell_iterators())
     {
         for (unsigned int face_number = 0;
              face_number < GeometryInfo<2>::faces_per_cell;