5 files changed, 5 insertions, 5 deletions
diff --git a/examples/app-and-lib/app/main.cpp b/examples/app-and-lib/app/main.cpp
index 9d1eda989..17f4226f3 100644
--- a/examples/app-and-lib/app/main.cpp
+++ b/examples/app-and-lib/app/main.cpp
@@ -48,7 +48,7 @@
 **
 ****************************************************************************/
 
-#include <stdio.h>
+#include <cstdio>
 #include <lib.h>
 
 int main()
diff --git a/examples/app-and-lib/lib/lib.cpp b/examples/app-and-lib/lib/lib.cpp
index db312e2d2..bfa62ecf7 100644
--- a/examples/app-and-lib/lib/lib.cpp
+++ b/examples/app-and-lib/lib/lib.cpp
@@ -48,7 +48,7 @@
 **
 ****************************************************************************/
 
-#include <stdio.h>
+#include <cstdio>
 
 #ifndef CRUCIAL_DEFINE
 #   error CRUCIAL_DEFINE not defined
diff --git a/examples/collidingmice/main.cpp b/examples/collidingmice/main.cpp
index 6604cc597..ffddf4c81 100644
--- a/examples/collidingmice/main.cpp
+++ b/examples/collidingmice/main.cpp
@@ -56,7 +56,7 @@
 #include <QTime>
 #include <QTimer>
 
-#include <math.h>
+#include <cmath>
 
 static const int MouseCount = 7;
 
diff --git a/examples/collidingmice/mouse.cpp b/examples/collidingmice/mouse.cpp
index 092054046..7075ada38 100644
--- a/examples/collidingmice/mouse.cpp
+++ b/examples/collidingmice/mouse.cpp
@@ -54,7 +54,7 @@
 #include <QPainter>
 #include <QStyleOption>
 
-#include <math.h>
+#include <cmath>
 
 static const double Pi = 3.14159265358979323846264338327950288419717;
 static double TwoPi = 2.0 * Pi;
diff --git a/examples/helloworld-complex/src/main.cpp b/examples/helloworld-complex/src/main.cpp
index f3dbcc4f7..691c401e5 100644
--- a/examples/helloworld-complex/src/main.cpp
+++ b/examples/helloworld-complex/src/main.cpp
@@ -54,7 +54,7 @@
 #include "specialfeature.h"
 #endif
 
-#include <stdio.h>
+#include <cstdio>
 
 #ifndef HAVE_MAIN_CPP
 #   error missing define HAVE_MAIN_CPP