diff --git a/book/en-us/05-pointers.md b/book/en-us/05-pointers.md
index 90c83b4..acd8ebe 100644
--- a/book/en-us/05-pointers.md
+++ b/book/en-us/05-pointers.md
@@ -36,12 +36,10 @@ And return the `std::shared_ptr` pointer of this object type. For example:
 ```cpp
 #include <iostream>
 #include <memory>
-void foo(std::shared_ptr<int> i)
-{
+void foo(std::shared_ptr<int> i) {
     (*i)++;
 }
-int main()
-{
+int main() {
     // auto pointer = new int(10); // illegal, no direct assignment
     // Constructed a std::shared_ptr
     auto pointer = std::make_shared<int>(10);
diff --git a/book/zh-cn/05-pointers.md b/book/zh-cn/05-pointers.md
index 010af29..6688bd1 100644
--- a/book/zh-cn/05-pointers.md
+++ b/book/zh-cn/05-pointers.md
@@ -38,12 +38,10 @@ order: 5
 ```cpp
 #include <iostream>
 #include <memory>
-void foo(std::shared_ptr<int> i)
-{
+void foo(std::shared_ptr<int> i) {
     (*i)++;
 }
-int main()
-{
+int main() {
     // auto pointer = new int(10); // illegal, no direct assignment
     // Constructed a std::shared_ptr
     auto pointer = std::make_shared<int>(10);