std::FILE(3) C++ Standard Libary std::FILE(3) NAME std::FILE - std::FILE Synopsis Defined in header <cstdio> typedef /* unspecified */ FILE; Each std::FILE object denotes a C stream. C standard (referenced by C++ standard) does not specify whether std::FILE is a complete object type. While it may be possible to copy a valid std::FILE, using a pointer to such a copy as an argument for an I/O function invokes un- specified behavior. In other words, std::FILE may be semantically non-copyable. I/O streams can be used for both unformatted and formatted input and output. Furthermore, the functions that handle input and output can also be locale-sensitive, such that wide/multibyte conversions are performed as necessary. Notes POSIX explicitly requires that the LC_CTYPE facet of the currently in- stalled C locale be stored within the FILE object the moment the stream's orienta- tion becomes wide; POSIX requires that this LC_CTYPE facet be used for all future I/O on this stream until the orientation is changed, regardless of any subsequent call to std::setlocale. It is intended that each line of text be composed of data that are es- sentially human-readable. POSIX implementations do not distinguish between text and binary streams (there is no special mapping for '\n' or any other characters). See also basic_streambuf abstracts a raw device (class template) basic_filebuf implements raw file device (class template) stdin expression of type FILE* associated with the input stream stdout expression of type FILE* associated with the output stream stderr expression of type FILE* associated with the error out- put stream (macro constant) C documentation for FILE http://cppreference.com 2024.06.10 std::FILE(3)
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