Use typeid on a polymorphic class heirarchy : typeid « Development « C++ Tutorial

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2. Development
3. typeid

#include <iostream> 
#include <typeinfo> 
using namespace std; 
 
class Base { 
}; 
 
class Derived1: public Base { 
}; 
 
class Derived2: public Base { 
}; 
 
int main() 
{ 
  Base *p, baseob; 
  Derived1 ob1; 
  Derived2 ob2; 
 
  p = &baseob; 
  cout << typeid(*p).name() << endl; 
 
  p = &ob1; 
  cout << typeid(*p).name() << endl; 
 
  p = &ob2; 
  cout << typeid(*p).name() << endl; 
 
  return 0; 
}

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