#include
#include
using namespace std;
class CBase { virtual void dummy() {cout << "base";} };
class CDerived: public CBase { int a; };
int main () {
try {
CBase * pba = new CDerived;
CBase * pbb = new CBase;
CDerived * pd;
pd = dynamic_cast(pba);
if (pd==0) cout << "Null pointer on first type-cast" << endl;
pd = dynamic_cast(pbb);
if (pd==0) cout << "Null pointer on second type-cast" << endl;
} catch (exception& e) {cout << "Exception: " << e.what();}
return 0;
}