public static member function
<string>

std::char_traits::not_eof

static int_type not_eof(const int_type& c);

static constexpr int_type not_eof(int_type c) noexcept;
Not End-of-File character
Returns a value that is guaranteed to not be an End-of-File.

If c is not an End-of-File character, it always returns c unchanged. Otherwise, some implementation-defined value that is not an End-of-File character.

All character traits types shall implement the function so that the returned value compares different from eof() using member eq_int_type.

Parameters

c
Value.
Member type int_type is an integral type that can represent eof() or any valid character value.

Return Value

c if c is not an End-of-File value, and some other value otherwise.

Member type int_type is an integral type that can represent eof() or any valid character value.

Complexity

Constant.

Exception safety

No-throw guarantee: this member function never throws exceptions.

See also

char_traits::eof
End-of-File character ( public static member function )

C++