typeid, polymorphic class Using C++ Programing

#include
#include
#include
using namespace std;
class CBase 

{ 

virtual void f()

{} 

};
class CDerived : public CBase {};
int main () 

{
try 

{
CBase* a = new CBase;
CBase* b = new CDerived;
cout << "a is: " << typeid(a).name() << '\n';
cout << "b is: " << typeid(b).name() << '\n';
cout << "*a is: " << typeid(*a).name() << '\n';
cout << "*b is: " << typeid(*b).name() << '\n';
} 

catch (exception& e) 

{ cout << "Exception: " << e.what() << endl; 

}
return 0;
}