1 files changed, 4 insertions, 0 deletions

diff --git a/04-15.md b/04-15.md
index 01c0ed2..11a0317 100644
--- a/04-15.md
+++ b/04-15.md
@@ -77,3 +77,7 @@ struct mystruct{
 	char c;
 };
 ```
+
+---
+
+[04/20 ->](04-20.md)