#include <iostream>
#include <string>
#include <map>
using namespace std;
 
class Employee {};
class A: public Employee {};
class B: public Employee {};
class C: public Employee {};
typedef Employee *makeEmployee();
 
map<string,makeEmployee*> maker
 {
    {"A",[]()->Employee*{ return new A(); }},
    {"B",[]()->Employee*{ return new B(); }},
    {"C",[]()->Employee*{ return new C(); }},
 };
 
int main()
  {
   Employee *tmp=maker["A"]();
   return 0;
  }

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