support bazel complie this project and format code.

basic_content/struct/ext_struct_func.cpp

@@ -1,33 +1,31 @@
-#include<iostream>
-#include<stdio.h>
+#include <iostream>
+#include <stdio.h>
 using namespace std;
-struct Base {         
-    int v1;
-//    private:   //error!
-        int v3;
-    public:   //显示声明public
-        int v2;
-    virtual void print(){       
-        printf("%s\n","Base");
-    };    
-    Base(){cout<<"Base construct"<<endl;};
-    virtual ~Base(){cout<<"Base deconstruct"<<endl;};
+struct Base {
+  int v1;
+  //    private:   //error!
+  int v3;
+
+public: // 显示声明public
+  int v2;
+  virtual void print() { printf("%s\n", "Base"); };
+  Base() { cout << "Base construct" << endl; };
+  virtual ~Base() { cout << "Base deconstruct" << endl; };
 };
 
-struct Derived:Base {         
+struct Derived : Base {
 
-    Derived(){cout<<"Derived construct"<<endl;};
-    virtual ~Derived(){cout<<"Derived deconstruct"<<endl;};
-    public:
-        int v2;
-    void print(){       
-        printf("%s\n","Derived");
-    };    
+  Derived() { cout << "Derived construct" << endl; };
+  virtual ~Derived() { cout << "Derived deconstruct" << endl; };
+
+public:
+  int v2;
+  void print() { printf("%s\n", "Derived"); };
 };
 
 int main() {
-    Base *b=new Derived();
-    b->print();
-    delete b;
-    return 0;
+  Base *b = new Derived();
+  b->print();
+  delete b;
+  return 0;
 }