Use a reference with typeid.

   
#include <iostream>
#include <typeinfo>
using namespace std;
   
class Mammal {
public:
  virtual bool lays_eggs() { return false; } // Mammal is polymorphic
};
   
class Cat: public Mammal {
public:
};
   
class Platypus: public Mammal {
public:
  bool lays_eggs() { return true; }
};
   
// Demonstrate typeid with a reference parameter.
void WhatMammal(Mammal &ob)
{
  cout << "ob is referencing an object of type ";
  cout << typeid(ob).name() << endl;
}
   
int main()
{
  Mammal AnyMammal;
  Cat cat;
  Platypus platypus;
   
  WhatMammal(AnyMammal);
  WhatMammal(cat);
  WhatMammal(platypus);
   
  return 0;
}

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Use a reference with typeid. : typeid « Development « C++

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