From ddbe85d4be46257e73c4d9b888c0aac417e896ec Mon Sep 17 00:00:00 2001
From: Martin Kronbichler <kronbichler@lnm.mw.tum.de>
Date: Mon, 9 Mar 2020 19:26:06 +0100
Subject: [PATCH] Add missing include file for step-69

---
 examples/step-69/step-69.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/examples/step-69/step-69.cc b/examples/step-69/step-69.cc
index b4f1b00c9b..49062a7540 100644
--- a/examples/step-69/step-69.cc
+++ b/examples/step-69/step-69.cc
@@ -82,8 +82,9 @@
 #include <boost/range/irange.hpp>
 #include <boost/range/iterator_range.hpp>
 
-// For std::isnan and std::isinf.
+// For std::isnan, std::isinf, and std::ifstream
 #include <cmath>
+#include <fstream>
 
 // @sect3{Class template declarations}
 //
-- 
2.39.5