typeid() function and RTTI must be enabled in compiler : typeid « Development « C++ Tutorial

1. C++ Tutorial
2. Development
3. typeid

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

  class Base  
    {  
     virtual void virtFunc()    
        {  }  
    };  
  class Derv1 : public Base  
    { };  
  class Derv2 : public Base  
    { };  

  void displayName(Base* pB)  
    {  
     cout << "pointer to an object of ";  //display name of class  
     cout << typeid(*pB).name() << endl;  //pointed to by pB  
    }  
  
  int main()  
    {  
     Base* pBase = new Derv1;  
     displayName(pBase);   //"pointer to an object of class Derv1"  
    
     pBase = new Derv2;  
     displayName(pBase);   //"pointer to an object of class Derv2"  
     return 0;  
    }