typeinfo.cpp

#include <iostream>
#include <typeinfo>
#include <stdexcept>
using namespace std;

class A {
  public:
  virtual void print() { cout << "A" << endl; }
};

class B : public A {
  public:
  virtual void print() { cout << "B" << endl; }
};

class C : public A {
  public:
  virtual void print() { cout << "C" << endl; }
};

class MyE : public exception {
  
};

int main() {
  const A& b = B();
  const A& c = C();
  
  cout << typeid(b).name() << endl;
  cout << typeid(c).name() << endl;
  
  cout << typeid(MyE()).name() << endl;
  
  return 0;
}