Exception

异常程序的基础类：

class _CRTIMP_PURE exception{   // base of all library exceptionspublic:_EXCEPTION_INLINE __CLR_OR_THIS_CALL exception();_EXCEPTION_INLINE explicit __CLR_OR_THIS_CALL exception(const char * const &);_EXCEPTION_INLINE __CLR_OR_THIS_CALL exception(const char * const &, int);_EXCEPTION_INLINE __CLR_OR_THIS_CALL exception(const exception&);_EXCEPTION_INLINE exception& __CLR_OR_THIS_CALL operator=(const exception&);_EXCEPTION_INLINE virtual __CLR_OR_THIS_CALL ~exception() _NOEXCEPT;_EXCEPTION_INLINE virtual const char * __CLR_OR_THIS_CALL what() const;private:_EXCEPTION_INLINE void __CLR_OR_THIS_CALL _Copy_str(const char *);_EXCEPTION_INLINE void __CLR_OR_THIS_CALL _Tidy();const char * _Mywhat;bool _Mydofree;};