c++繼承執行個體

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#include <iostream>#include <vector>#include <string>using namespace std;class parent{protected:    string pname;public:    parent(string name){        pname = name;    }    virtual void printname(){};};class child : public parent {protected:    string cname;public:    child(string name):parent(name){        cname = name;    }    virtual void printname(){        cout << "this is child, cname is" << cname << ", pname is " << pname << endl;    }};class grandchild: public child{private:    string gname;public:    grandchild(string name):child(name){        gname = name;    }    virtual void printname(){        cout << "this is grandchild,gname is" << gname << ", cname is" << cname << ", pname is" << pname << endl;    }};int main(){    string name = "C";    child Child(name);    name = "GC";    grandchild Gchild(name);    vector<parent*> mlist;    mlist.push_back(dynamic_cast<parent*>(&Child));    mlist.push_back(dynamic_cast<parent*>(&Gchild));    for(int i = 0; i < mlist.size(); i++){        mlist[i] -> printname();    }    return 0;}

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c++繼承執行個體