nlp_exception.h

#ifndef NLP_EXCEPTION_H
#define NLP_EXCEPTION_H
#include <exception>

using namespace std;

namespace NLP
{
    class unimplemented_exc: public exception
    {
        virtual const char* what() const throw()
        {
            return "Unimplemented error.";
        }
    };

    class invalid_sentence : public exception
    {
        virtual const char* what() const throw()
        {
            return "Invalid sentence type.";
        }
    };

} /* NLP */


#endif /* !NLP_EXCEPTION_H */