🌐 [input.output.general]figstreampostraits_pos_type_charstreampostraits_pos_type_char->streampostraits_pos_type_wchar_twstreampostraits_pos_type_wchar_t->wstreamposfposstreampos->fposwstreampos->fpostraits_off_type_charstreamofftraits_off_type_char->streamofftraits_off_type_wchar_ttraits_off_type_wchar_t->streamoffstreamoff_typestreamoff->streamoff_typestreamsizestreamsize_typestreamsize->streamsize_type

The following subclauses describe requirements for stream parameters, and components for forward declarations of iostreams, predefined iostreams objects, base iostreams classes, stream buffering, stream formatting and manipulators, string streams, and file streams, as summarized in Table 115 .

Table 115: Input/output library summary [tab:iostreams.summary]

	Subclause	Header
[iostreams.requirements]	Requirements
[iostream.forward]	Forward declarations	<iosfwd>
[iostream.objects]	Standard iostream objects	<iostream>
[iostreams.base]	Iostreams base classes	<ios>
[stream.buffers]	Stream buffers	<streambuf>
[iostream.format]	Formatting and manipulators	<iomanip>, <istream>, <ostream>
[string.streams]	String streams	<sstream>
[file.streams]	File streams	<fstream>
[syncstream]	Synchronized output streams	<syncstream>
[filesystems]	File systems	<filesystem>
[c.files]	C library files	<cstdio>, <cinttypes>

[ Note

Figure 7 illustrates relationships among various types described in this clause.

A line from A to B indicates that A is an alias (e.g., a typedef) for B or that A is defined in terms of B.

Figure 7: Stream position, offset, and size types [fig:iostreams.streampos]

— end note

]

29 Input/output library [input.output]

29.1 General [input.output.general]