support bazel complie this project and format code.

basic_content/using/using_derived.cpp

@@ -9,28 +9,21 @@
 #include <iostream>
 using namespace std;
 
-class Base{
-    public:
-        void f(){ cout<<"f()"<<endl;
-        }
-        void f(int n){
-            cout<<"Base::f(int)"<<endl;
-        }
+class Base {
+public:
+  void f() { cout << "f()" << endl; }
+  void f(int n) { cout << "Base::f(int)" << endl; }
 };
 
 class Derived : private Base {
-    public:
-        using Base::f;
-        void f(int n){
-            cout<<"Derived::f(int)"<<endl;
-        }
+public:
+  using Base::f;
+  void f(int n) { cout << "Derived::f(int)" << endl; }
 };
 
-int main()
-{
-    Base b;
-    Derived d;
-    d.f();
-    d.f(1);
-    return 0;
+int main() {
+  Derived d;
+  d.f();
+  d.f(1);
+  return 0;
 }