Name 

Description 

bad_cast class 

Header File
typeinfo.h
Description
When dynamic_cast fails to make a cast to reference, the expression can throw bad_cast. Note that when dynamic_cast fails to make a cast to pointer type, the result is the null pointer. 

bad_typeid class 

Header File
typeinfo.h
Description
When the operand of typeid is a dereferenced null pointer, the typeid operator can throw bad_typeid. 

type_info class 

Header File
typeinfo.h
Description
Provides information about a type.
Constructor
Only a private constructor is provided. You cannot create type_info objects. By declaring your objects to be _ _rtti types, or by using the -RT compiler switch, the compiler provides your objects with the elements of type_info. type_info references are generated by the typeid operator.
Public Member Functions
Operators