Add example.txt with introductory message

buduan · web-flow · commit fd9a318805c6 · 2025-10-31T19:01:18.000+08:00
diff --git a/friends/example.txt b/friends/example.txt
@@ -0,0 +1 @@
+Hello! This is an example file created by the instructor.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+Hello! This is an example file created by the instructor.`