1 files changed, 8 insertions, 0 deletions
diff --git a/lang/cpptour/static-ass.cc b/lang/cpptour/static-ass.cc
new file mode 100644
index 0000000..837a965
--- /dev/null
+++ b/lang/cpptour/static-ass.cc
@@ -0,0 +1,8 @@
+constexpr double C = 2999792.458;   // km/s
+
+int
+main ()
+{
+  constexpr double local_max = 160.0 / (60 * 60);
+  static_assert (local_max < C, "can't go that fast");
+}