#include <iostream>
#include <fstream>

using namespace std;

class MyExceptionBase
{
  public:
   string messg ;
   MyExceptionBase( string str1 )
    {
       messg = str1 ;
     }
};

class MyException : public MyExceptionBase
{
  public:
    MyException( string str1 ) : MyExceptionBase( str1 )
    {
    }
};

int main()
{
    try
      {
        throw MyException("Error") ;
      }

    catch ( MyExceptionBase& e1 )
      {
         cout << e1.messg   << endl ;
      }

    catch ( MyException& e1 )
      {
         cout << e1.messg   << endl ;
      }
     return 0;
}