ctype Class
A class that provides a facet that is used to classify characters, convert from upper and lower cases, and convert between the native character set and that set used by the locale.
For a list of all members of this type, see ctype Members.
template <class CharType>
class ctype : public ctype_base
Parameters
- CharType
The type used within a program to encode characters.
Remarks
As with any locale facet, the static object ID has an initial stored value of zero. The first attempt to access its stored value stores a unique positive value in id. Classification criteria are provided a nested bitmask type in the base class ctype_base.
The Standard C++ Library defines two explicit specializations of this template class:
ctype<char>, an explicit specialization whose differences are described separately.
ctype<wchar_t>, which treats elements as wide characters.
Other specializations of template class ctype<CharType>:
Convert a value ch of type CharType to a value of type char with the expression (char)ch.
Convert a value byte of type char to a value of type CharType with the expression CharType (byte).
All other operations are performed on char values in the same way as for the explicit specialization ctype<char>.
Requirements
Header: <locale>
Namespace: std