support bazel complie this project and format code.

basic_content/virtual/set3/virtual_function1.cpp

@@ -1,22 +1,21 @@
-#include<iostream> 
-using namespace std; 
+#include <iostream>
+using namespace std;
 
-class Derived; 
+class Derived;
 
-class Base { 
-    public: 
-        virtual void fun() { cout << "Base Fun"; } 
-     //   friend int main(); 
-}; 
+class Base {
+public:
+  virtual void fun() { cout << "Base Fun"; }
+  //   friend int main();
+};
 
-class Derived: public Base { 
-    private: 
-        void fun() { cout << "Derived Fun"; } 
-}; 
+class Derived : public Base {
+private:
+  void fun() { cout << "Derived Fun"; }
+};
 
-int main() 
-{ 
-    Base *ptr = new Derived; 
-    ptr->fun(); 
-    return 0; 
+int main() {
+  Base *ptr = new Derived;
+  ptr->fun();
+  return 0;
 }