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std::char_traits<char>::eof, std::char_traits<wchar_t>::eof, std::char_traits<char8_t>::eof, std::char_traits<char16_t>::eof, std::char_traits<char32_t>::eof

From cppreference.com
< cpp‎ | string‎ | char traits
static int_type eof();
(until C++11)
static constexpr int_type eof() noexcept;
(since C++11)

Returns a value not equivalent to any valid value of type char_type.

See CharTraits for the general requirements on character traits for X::eof.

Contents

[edit] Parameters

(none)

[edit] Return value

 char_type  eof()
char EOF
wchar_t WEOF
char8_t an implementation-defined constant that
cannot appear as a valid UTF-8 code unit
char16_t an implementation-defined constant that
cannot appear as a valid UTF-16 code unit
char32_t an implementation-defined constant that
cannot appear as a Unicode code point

[edit] Complexity

Constant.

[edit] See also

[static]
checks whether a character is eof value
(public static member function) [edit]