bug fixed

fising · 王祥中 · commit 8cb789ec75a5 · 2017-03-07T15:57:28.000+08:00
diff --git a/files/chapter1.md b/files/chapter1.md
@@ -66,7 +66,7 @@ class OperationDiv extends Operation
 {
     public function getResult()
     {
-        $this->a / $this->b;
+        return $this->a / $this->b;
     }
 }
 
