diff --git a/classroom/classroom.c b/classroom/classroom.c
index 25fd8e7..1fd8fa5 100644
--- a/classroom/classroom.c
+++ b/classroom/classroom.c
@@ -9,7 +9,12 @@ void cs_book_classroom(void)
 	
 }
 
-void cs_find_classromm()  // 2020-8-20
+void cs_find_classroom()  // 2020-8-20
+{
+	
+}
+
+void set_classroom()
 {
 	
 }
\ No newline at end of file