C++多态

#include"cstdio"
#include"cstdlib"
#include"algorithm"
#include"iostream"
#include"sstream"
#include"cstring"
#include"string"
#include"algorithm"
using namespace std;
class Father{
public:
    Father(){
        cout<<this<<":"<<"create Father object"<<endl;
    }
    virtual ~Father(){
        cout<<"out of class Father"<<endl;
    }
    void fun(){
        cout<<"this is a common fun"<<endl;
    }
    virtual void DoSomething(){
        cout<<"do something in class Fahter"<<endl;
    }
};
class Son:public Father{
public:
    Son(){
        cout<<this<<":"<<"create Son object"<<endl;
    }
    ~Son(){
        cout<<"out of the class Son"<<endl;
    }
    void DoSomething(){
        cout<<"do something in class Son"<<endl;
    }
};
int main()
{
    Son *f=new Son();
    f->DoSomething();
    f->fun();
    delete f;
}