Standard library header <typeinfo>

This header is part of the type support library.

Classes

contains some type's information, generated by the implementation.
This is the class returned by the typeid operator.
(class)
exception that is thrown if an argument in a typeid expression is null
(class)
exception that is thrown by an invalid dynamic_cast expression, i.e. a cast of reference type fails
(class)

Synopsis

namespace std {
  class type_info;
  class bad_cast;
  class bad_typeid;
}

Class std::type_info 

class type_info {
public:
  virtual ~type_info();
  bool operator==(const type_info& rhs) const noexcept;
  bool operator!=(const type_info& rhs) const noexcept;
  bool before(const type_info& rhs) const noexcept;
  size_t hash_code() const noexcept;
  const char* name() const noexcept;
  type_info(const type_info& rhs) = delete; // cannot be copied
  type_info& operator=(const type_info& rhs) = delete; // cannot be copied
};

Class std::bad_cast 

class bad_cast : public exception {
public:
  bad_cast() noexcept;
  bad_cast(const bad_cast&) noexcept;
  bad_cast& operator=(const bad_cast&) noexcept;
  const char* what() const noexcept override;
};

Class std::bad_typeid 

class bad_typeid : public exception {
public:
  bad_typeid() noexcept;
  bad_typeid(const bad_typeid&) noexcept;
  bad_typeid& operator=(const bad_typeid&) noexcept;
  const char* what() const noexcept override;
};

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