diff --git a/book/zh-cn/05-pointers.md b/book/zh-cn/05-pointers.md
index 7b1cf75..99d76a4 100644
--- a/book/zh-cn/05-pointers.md
+++ b/book/zh-cn/05-pointers.md
@@ -148,13 +148,13 @@ struct B;
 struct A {
     std::shared_ptr<B> pointer;
     ~A() {
-        std::cout << "A 被销毁" << std::end;
+        std::cout << "A 被销毁" << std::endl;
     }
 };
 struct B {
     std::shared_ptr<A> pointer;
     ~B() {
-        std::cout << "B 被销毁" << std::end;
+        std::cout << "B 被销毁" << std::endl;
     }
 };
 int main() {