C + + Inheritance instance

#include <iostream>#include<vector>#include<string>using namespacestd;classparent{protected:    stringpname; Public: Parent (stringname) {PName=name; }    Virtual voidPrintname () {};};classChild: PublicParent {protected:    stringcname; Public: Child (stringname):p arent (name) {CNAME=name; }    Virtual voidPrintname () {cout<<"This is a child, the CNAME is"<< CNAME <<", PName is"<< pname <<Endl; }};classGrandchild: Publicchild{Private:    stringGname; Public: Grandchild (stringname): Child (name) {Gname=name; }    Virtual voidPrintname () {cout<<"Grandchild,gname is"<< Gname <<", CNAME is"<< CNAME <<", PName is"<< pname <<Endl; }};intMain () {stringName ="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(inti =0; I < mlist.size (); i++) {Mlist[i]-Printname (); }    return 0;}

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C + + Inheritance instance