libstdc++
std::basic_ios Class Reference
Inheritance diagram for std::basic_ios:

List of all members.

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Types

Protected Member Functions

Protected Attributes


Detailed Description

Virtual base class for all stream classes.

Most of the member functions called dispatched on stream objects (e.g., std::cout.foo(bar);) are consolidated in this class.


Member Typedef Documentation

These are non-standard types.

Reimplemented in std::basic_istream, and std::basic_ostream.

Definition at line 84 of file basic_ios.h.

typedef num_get<_CharT, istreambuf_iterator<_CharT, _Traits> > std::basic_ios::__num_get_type

These are non-standard types.

Reimplemented in std::basic_istream.

Definition at line 88 of file basic_ios.h.

typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> > std::basic_ios::__num_put_type

These are non-standard types.

Reimplemented in std::basic_ostream.

Definition at line 86 of file basic_ios.h.

typedef _CharT std::basic_ios::char_type

These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.

Reimplemented in std::basic_istream, and std::basic_ostream.

Definition at line 73 of file basic_ios.h.

typedef void(* std::ios_base::event_callback)(event, ios_base &, int) [inherited]

The type of an event callback function.

Parameters:
eventOne of the members of the event enum.
ios_baseReference to the ios_base object.
intThe integer provided when the callback was registered.

Event callbacks are user defined functions that get called during several ios_base and basic_ios functions, specifically imbue(), copyfmt(), and ~ios().

Definition at line 438 of file ios_base.h.

typedef _Ios_Fmtflags std::ios_base::fmtflags [inherited]

This is a bitmask type.

_Ios_Fmtflags is implementation-defined, but it is valid to perform bitwise operations on these values and expect the Right Thing to happen. Defined objects of type fmtflags are:

  • boolalpha
  • dec
  • fixed
  • hex
  • internal
  • left
  • oct
  • right
  • scientific
  • showbase
  • showpoint
  • showpos
  • skipws
  • unitbuf
  • uppercase
  • adjustfield
  • basefield
  • floatfield

Definition at line 257 of file ios_base.h.

typedef _Traits::int_type std::basic_ios::int_type

These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.

Reimplemented in std::basic_istream, and std::basic_ostream.

Definition at line 74 of file basic_ios.h.

typedef _Ios_Iostate std::ios_base::iostate [inherited]

This is a bitmask type.

_Ios_Iostate is implementation-defined, but it is valid to perform bitwise operations on these values and expect the Right Thing to happen. Defined objects of type iostate are:

  • badbit
  • eofbit
  • failbit
  • goodbit

Definition at line 332 of file ios_base.h.

typedef _Traits::off_type std::basic_ios::off_type

These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.

Reimplemented in std::basic_istream, and std::basic_ostream.

Definition at line 76 of file basic_ios.h.

typedef _Ios_Openmode std::ios_base::openmode [inherited]

This is a bitmask type.

_Ios_Openmode is implementation-defined, but it is valid to perform bitwise operations on these values and expect the Right Thing to happen. Defined objects of type openmode are:

  • app
  • ate
  • binary
  • in
  • out
  • trunc

Definition at line 363 of file ios_base.h.

typedef _Traits::pos_type std::basic_ios::pos_type

These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.

Reimplemented in std::basic_istream, and std::basic_ostream.

Definition at line 75 of file basic_ios.h.

typedef _Ios_Seekdir std::ios_base::seekdir [inherited]

This is an enumerated type.

_Ios_Seekdir is implementation-defined. Defined values of type seekdir are:

  • beg
  • cur, equivalent to SEEK_CUR in the C standard library.
  • end, equivalent to SEEK_END in the C standard library.

Definition at line 395 of file ios_base.h.

typedef _Traits std::basic_ios::traits_type

These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation.

Reimplemented in std::basic_istream, and std::basic_ostream.

Definition at line 77 of file basic_ios.h.


Member Enumeration Documentation

enum std::ios_base::event [inherited]

The set of events that may be passed to an event callback.

erase_event is used during ~ios() and copyfmt(). imbue_event is used during imbue(). copyfmt_event is used during copyfmt().

Definition at line 421 of file ios_base.h.


Constructor & Destructor Documentation

std::basic_ios::basic_ios ( basic_streambuf< _CharT, _Traits > *  __sb) [inline, explicit]

Constructor performs initialization.

The parameter is passed by derived streams.

Definition at line 262 of file basic_ios.h.

virtual std::basic_ios::~basic_ios ( ) [inline, virtual]

Empty.

The destructor does nothing. More specifically, it does not destroy the streambuf held by rdbuf().

Definition at line 274 of file basic_ios.h.

std::basic_ios::basic_ios ( ) [inline, protected]

Empty.

The default constructor does nothing and is not normally accessible to users.

Definition at line 452 of file basic_ios.h.


Member Function Documentation

const locale& std::ios_base::_M_getloc ( ) const [inline, inherited]

Locale access.

Returns:
A reference to the current locale.

Like getloc above, but returns a reference instead of generating a copy.

Definition at line 708 of file ios_base.h.

Referenced by std::num_get::do_get(), std::num_put::do_put(), std::money_get::do_get(), std::time_get::do_get_time(), std::time_get::do_get_date(), std::time_get::do_get_weekday(), std::time_get::do_get_monthname(), std::time_get::do_get_year(), std::time_put::put(), and std::time_put::do_put().

bool std::basic_ios::bad ( ) const [inline]

Fast error checking.

Returns:
True if the badbit is set.

Note that other iostate flags may also be set.

Definition at line 203 of file basic_ios.h.

void std::basic_ios::clear ( iostate  __state = goodbit)

[Re]sets the error state.

Parameters:
stateThe new state flag(s) to set.

See std::ios_base::iostate for the possible bit values. Most users will not need to pass an argument.

Definition at line 42 of file basic_ios.tcc.

Referenced by std::basic_ios< _CharT, _Traits >::setstate(), and std::basic_ios< _CharT, _Traits >::exceptions().

basic_ios< _CharT, _Traits > & std::basic_ios::copyfmt ( const basic_ios __rhs)

Copies fields of __rhs into this.

Parameters:
__rhsThe source values for the copies.
Returns:
Reference to this object.

All fields of __rhs are copied into this object except that rdbuf() and rdstate() remain unchanged. All values in the pword and iword arrays are copied. Before copying, each callback is invoked with erase_event. After copying, each (new) callback is invoked with copyfmt_event. The final step is to copy exceptions().

Definition at line 64 of file basic_ios.tcc.

References std::ios_base::flags(), std::ios_base::width(), std::ios_base::precision(), tie(), fill(), std::ios_base::getloc(), and exceptions().

bool std::basic_ios::eof ( ) const [inline]

Fast error checking.

Returns:
True if the eofbit is set.

Note that other iostate flags may also be set.

Definition at line 182 of file basic_ios.h.

iostate std::basic_ios::exceptions ( ) const [inline]

Throwing exceptions on errors.

Returns:
The current exceptions mask.

This changes nothing in the stream. See the one-argument version of exceptions(iostate) for the meaning of the return value.

Definition at line 214 of file basic_ios.h.

Referenced by copyfmt().

void std::basic_ios::exceptions ( iostate  __except) [inline]

Throwing exceptions on errors.

Parameters:
exceptThe new exceptions mask.

By default, error flags are set silently. You can set an exceptions mask for each stream; if a bit in the mask becomes set in the error flags, then an exception of type std::ios_base::failure is thrown.

If the error flag is already set when the exceptions mask is added, the exception is immediately thrown. Try running the following under GCC 3.1 or later:

  #include <iostream>
  #include <fstream>
  #include <exception>

  int main()
  {
      std::set_terminate (__gnu_cxx::__verbose_terminate_handler);

      std::ifstream f ("/etc/motd");

      std::cerr << "Setting badbit\n";
      f.setstate (std::ios_base::badbit);

      std::cerr << "Setting exception mask\n";
      f.exceptions (std::ios_base::badbit);
  }

Definition at line 249 of file basic_ios.h.

bool std::basic_ios::fail ( ) const [inline]

Fast error checking.

Returns:
True if either the badbit or the failbit is set.

Checking the badbit in fail() is historical practice. Note that other iostate flags may also be set.

Definition at line 193 of file basic_ios.h.

Referenced by std::basic_ios< _CharT, _Traits >::operator void *(), and std::basic_ios< _CharT, _Traits >::operator!().

char_type std::basic_ios::fill ( ) const [inline]

Retrieves the empty character.

Returns:
The current fill character.

It defaults to a space (' ') in the current locale.

Definition at line 362 of file basic_ios.h.

Referenced by std::basic_ios< _CharT, _Traits >::fill(), and copyfmt().

char_type std::basic_ios::fill ( char_type  __ch) [inline]

Sets a new empty character.

Parameters:
chThe new character.
Returns:
The previous fill character.

The fill character is used to fill out space when P+ characters have been requested (e.g., via setw), Q characters are actually used, and Q<P. It defaults to a space (' ') in the current locale.

Definition at line 382 of file basic_ios.h.

fmtflags std::ios_base::flags ( ) const [inline, inherited]

Access to format flags.

Returns:
The format control flags for both input and output.

Definition at line 553 of file ios_base.h.

Referenced by copyfmt(), std::num_get::do_get(), std::num_put::do_put(), and std::operator<<().

fmtflags std::ios_base::flags ( fmtflags  __fmtfl) [inline, inherited]

Setting new format flags all at once.

Parameters:
fmtflThe new flags to set.
Returns:
The previous format control flags.

This function overwrites all the format flags with fmtfl.

Definition at line 564 of file ios_base.h.

locale std::ios_base::getloc ( ) const [inline, inherited]

Locale access.

Returns:
A copy of the current locale.

If imbue(loc) has previously been called, then this function returns loc. Otherwise, it returns a copy of std::locale(), the global C++ locale.

Definition at line 697 of file ios_base.h.

Referenced by copyfmt(), and std::money_put::do_put().

bool std::basic_ios::good ( ) const [inline]

Fast error checking.

Returns:
True if no error flags are set.

A wrapper around rdstate.

Definition at line 172 of file basic_ios.h.

locale std::basic_ios::imbue ( const locale __loc)

Moves to a new locale.

Parameters:
locThe new locale.
Returns:
The previous locale.

Calls ios_base::imbue(loc), and if a stream buffer is associated with this stream, calls that buffer's pubimbue(loc).

Additional l10n notes are at http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html

Reimplemented from std::ios_base.

Definition at line 115 of file basic_ios.tcc.

void std::basic_ios::init ( basic_streambuf< _CharT, _Traits > *  __sb) [protected]

All setup is performed here.

This is called from the public constructor. It is not virtual and cannot be redefined.

Definition at line 127 of file basic_ios.tcc.

Referenced by std::basic_ios< _CharT, _Traits >::basic_ios().

long& std::ios_base::iword ( int  __ix) [inline, inherited]

Access to integer array.

Parameters:
__ixIndex into the array.
Returns:
A reference to an integer associated with the index.

The iword function provides access to an array of integers that can be used for any purpose. The array grows as required to hold the supplied index. All integers in the array are initialized to 0.

The implementation reserves several indices. You should use xalloc to obtain an index that is safe to use. Also note that since the array can grow dynamically, it is not safe to hold onto the reference.

Definition at line 743 of file ios_base.h.

char std::basic_ios::narrow ( char_type  __c,
char  __dfault 
) const [inline]

Squeezes characters.

Parameters:
cThe character to narrow.
dfaultThe character to narrow.
Returns:
The narrowed character.

Maps a character of char_type to a character of char, if possible.

Returns the result of

    std::use_facet<ctype<char_type> >(getloc()).narrow(c,dfault)

Additional l10n notes are at http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html

Definition at line 422 of file basic_ios.h.

std::basic_ios::operator void * ( ) const [inline]

The quick-and-easy status check.

This allows you to write constructs such as if (!a_stream) ... and while (a_stream) ...

Definition at line 113 of file basic_ios.h.

bool std::basic_ios::operator! ( ) const [inline]

The quick-and-easy status check.

This allows you to write constructs such as if (!a_stream) ... and while (a_stream) ...

Definition at line 117 of file basic_ios.h.

streamsize std::ios_base::precision ( ) const [inline, inherited]

Flags access.

Returns:
The precision to generate on certain output operations.

Be careful if you try to give a definition of precision here; see DR 189.

Definition at line 623 of file ios_base.h.

Referenced by copyfmt().

streamsize std::ios_base::precision ( streamsize  __prec) [inline, inherited]

Changing flags.

Parameters:
precThe new precision value.
Returns:
The previous value of precision().

Definition at line 632 of file ios_base.h.

void*& std::ios_base::pword ( int  __ix) [inline, inherited]

Access to void pointer array.

Parameters:
__ixIndex into the array.
Returns:
A reference to a void* associated with the index.

The pword function provides access to an array of pointers that can be used for any purpose. The array grows as required to hold the supplied index. All pointers in the array are initialized to 0.

The implementation reserves several indices. You should use xalloc to obtain an index that is safe to use. Also note that since the array can grow dynamically, it is not safe to hold onto the reference.

Definition at line 764 of file ios_base.h.

basic_streambuf<_CharT, _Traits>* std::basic_ios::rdbuf ( ) const [inline]

Accessing the underlying buffer.

Returns:
The current stream buffer.

This does not change the state of the stream.

Definition at line 313 of file basic_ios.h.

basic_streambuf< _CharT, _Traits > * std::basic_ios::rdbuf ( basic_streambuf< _CharT, _Traits > *  __sb)

Changing the underlying buffer.

Parameters:
sbThe new stream buffer.
Returns:
The previous stream buffer.

Associates a new buffer with the current stream, and clears the error state.

Due to historical accidents which the LWG refuses to correct, the I/O library suffers from a design error: this function is hidden in derived classes by overrides of the zero-argument rdbuf(), which is non-virtual for hysterical raisins. As a result, you must use explicit qualifications to access this function via any derived class. For example:

  std::fstream     foo;         // or some other derived type
  std::streambuf*  p = .....;

  foo.ios::rdbuf(p);            // ios == basic_ios<char>

Definition at line 54 of file basic_ios.tcc.

iostate std::basic_ios::rdstate ( ) const [inline]

Returns the error state of the stream buffer.

Returns:
A bit pattern (well, isn't everything?)

See std::ios_base::iostate for the possible bit values. Most users will call one of the interpreting wrappers, e.g., good().

Definition at line 129 of file basic_ios.h.

Referenced by std::basic_ios< _CharT, _Traits >::setstate(), std::basic_ios< _CharT, _Traits >::good(), std::basic_ios< _CharT, _Traits >::eof(), std::basic_ios< _CharT, _Traits >::fail(), and std::basic_ios< _CharT, _Traits >::bad().

void std::ios_base::register_callback ( event_callback  __fn,
int  __index 
) [inherited]

Add the callback __fn with parameter __index.

Parameters:
__fnThe function to add.
__indexThe integer to pass to the function when invoked.

Registers a function as an event callback with an integer parameter to be passed to the function when invoked. Multiple copies of the function are allowed. If there are multiple callbacks, they are invoked in the order they were registered.

fmtflags std::ios_base::setf ( fmtflags  __fmtfl) [inline, inherited]

Setting new format flags.

Parameters:
fmtflAdditional flags to set.
Returns:
The previous format control flags.

This function sets additional flags in format control. Flags that were previously set remain set.

Definition at line 580 of file ios_base.h.

fmtflags std::ios_base::setf ( fmtflags  __fmtfl,
fmtflags  __mask 
) [inline, inherited]

Setting new format flags.

Parameters:
fmtflAdditional flags to set.
maskThe flags mask for fmtfl.
Returns:
The previous format control flags.

This function clears mask in the format flags, then sets fmtfl & mask. An example mask is ios_base::adjustfield.

Definition at line 597 of file ios_base.h.

void std::basic_ios::setstate ( iostate  __state) [inline]

Sets additional flags in the error state.

Parameters:
stateThe additional state flag(s) to set.

See std::ios_base::iostate for the possible bit values.

Definition at line 149 of file basic_ios.h.

static bool std::ios_base::sync_with_stdio ( bool  __sync = true) [static, inherited]

Interaction with the standard C I/O objects.

Parameters:
syncWhether to synchronize or not.
Returns:
True if the standard streams were previously synchronized.

The synchronization referred to is only that between the standard C facilities (e.g., stdout) and the standard C++ objects (e.g., cout). User-declared streams are unaffected. See http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt11ch28s02.html

basic_ostream<_CharT, _Traits>* std::basic_ios::tie ( ) const [inline]

Fetches the current tied stream.

Returns:
A pointer to the tied stream, or NULL if the stream is not tied.

A stream may be tied (or synchronized) to a second output stream. When this stream performs any I/O, the tied stream is first flushed. For example, std::cin is tied to std::cout.

Definition at line 287 of file basic_ios.h.

Referenced by copyfmt().

basic_ostream<_CharT, _Traits>* std::basic_ios::tie ( basic_ostream< _CharT, _Traits > *  __tiestr) [inline]

Ties this stream to an output stream.

Parameters:
tiestrThe output stream.
Returns:
The previously tied output stream, or NULL if the stream was not tied.

This sets up a new tie; see tie() for more.

Definition at line 299 of file basic_ios.h.

void std::ios_base::unsetf ( fmtflags  __mask) [inline, inherited]

Clearing format flags.

Parameters:
maskThe flags to unset.

This function clears mask in the format flags.

Definition at line 612 of file ios_base.h.

char_type std::basic_ios::widen ( char  __c) const [inline]

Widens characters.

Parameters:
cThe character to widen.
Returns:
The widened character.

Maps a character of char to a character of char_type.

Returns the result of

    std::use_facet<ctype<char_type> >(getloc()).widen(c)

Additional l10n notes are at http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html

Definition at line 441 of file basic_ios.h.

Referenced by std::basic_ios< _CharT, _Traits >::fill().

streamsize std::ios_base::width ( ) const [inline, inherited]

Flags access.

Returns:
The minimum field width to generate on output operations.

Minimum field width refers to the number of characters.

Definition at line 646 of file ios_base.h.

Referenced by copyfmt(), and std::num_put::do_put().

streamsize std::ios_base::width ( streamsize  __wide) [inline, inherited]

Changing flags.

Parameters:
wideThe new width value.
Returns:
The previous value of width().

Definition at line 655 of file ios_base.h.

static int std::ios_base::xalloc ( ) throw () [static, inherited]

Access to unique indices.

Returns:
An integer different from all previous calls.

This function returns a unique integer every time it is called. It can be used for any purpose, but is primarily intended to be a unique index for the iword and pword functions. The expectation is that an application calls xalloc in order to obtain an index in the iword and pword arrays that can be used without fear of conflict.

The implementation maintains a static variable that is incremented and returned on each invocation. xalloc is guaranteed to return an index that is safe to use in the iword and pword arrays.


Member Data Documentation

const fmtflags std::ios_base::adjustfield [static, inherited]

A mask of left|right|internal. Useful for the 2-arg form of setf.

Definition at line 312 of file ios_base.h.

Referenced by std::internal(), std::left(), std::right(), and std::num_put::do_put().

const openmode std::ios_base::app [static, inherited]

Seek to end before each write.

Definition at line 366 of file ios_base.h.

const openmode std::ios_base::ate [static, inherited]

Open and seek to end immediately after opening.

Definition at line 369 of file ios_base.h.

const fmtflags std::ios_base::basefield [static, inherited]

A mask of dec|oct|hex. Useful for the 2-arg form of setf.

Definition at line 315 of file ios_base.h.

Referenced by std::dec(), std::hex(), std::oct(), and std::num_get::do_get().

const seekdir std::ios_base::beg [static, inherited]

Request a seek relative to the beginning of the stream.

Definition at line 398 of file ios_base.h.

const openmode std::ios_base::binary [static, inherited]

Perform input and output in binary mode (as opposed to text mode). This is probably not what you think it is; see http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt11ch27s02.html.

Definition at line 374 of file ios_base.h.

const fmtflags std::ios_base::boolalpha [static, inherited]

Insert/extract bool in alphabetic rather than numeric format.

Definition at line 260 of file ios_base.h.

Referenced by std::boolalpha(), std::noboolalpha(), and std::num_put::do_put().

const seekdir std::ios_base::cur [static, inherited]

Request a seek relative to the current position within the sequence.

Definition at line 401 of file ios_base.h.

Referenced by std::basic_istream::tellg(), and std::basic_ostream::tellp().

const fmtflags std::ios_base::dec [static, inherited]

Converts integer input or generates integer output in decimal base.

Definition at line 263 of file ios_base.h.

Referenced by std::dec().

const seekdir std::ios_base::end [static, inherited]

Request a seek relative to the current end of the sequence.

Definition at line 404 of file ios_base.h.

const iostate std::ios_base::eofbit [static, inherited]

Indicates that an input operation reached the end of an input sequence.

Definition at line 339 of file ios_base.h.

Referenced by std::basic_ios< _CharT, _Traits >::eof(), std::basic_istream::putback(), std::basic_istream::unget(), std::basic_istream::seekg(), and std::ws().

const iostate std::ios_base::failbit [static, inherited]
const fmtflags std::ios_base::fixed [static, inherited]

Generate floating-point output in fixed-point notation.

Definition at line 266 of file ios_base.h.

Referenced by std::fixed().

const fmtflags std::ios_base::floatfield [static, inherited]

A mask of scientific|fixed. Useful for the 2-arg form of setf.

Definition at line 318 of file ios_base.h.

Referenced by std::fixed(), and std::scientific().

const iostate std::ios_base::goodbit [static, inherited]

Indicates all is well.

Definition at line 347 of file ios_base.h.

const fmtflags std::ios_base::hex [static, inherited]

Converts integer input or generates integer output in hexadecimal base.

Definition at line 269 of file ios_base.h.

Referenced by std::hex(), std::num_get::do_get(), std::num_put::do_put(), and std::basic_ostream::operator<<().

const openmode std::ios_base::in [static, inherited]

Open for input. Default for ifstream and fstream.

Definition at line 377 of file ios_base.h.

Referenced by std::basic_ifstream::open(), std::basic_istream::tellg(), std::basic_istream::seekg(), and std::basic_stringbuf::showmanyc().

const fmtflags std::ios_base::internal [static, inherited]

Adds fill characters at a designated internal point in certain generated output, or identical to right if no such point is designated.

Definition at line 274 of file ios_base.h.

Referenced by std::internal().

const fmtflags std::ios_base::left [static, inherited]

Adds fill characters on the right (final positions) of certain generated output. (I.e., the thing you print is flush left.)

Definition at line 278 of file ios_base.h.

Referenced by std::left(), and std::num_put::do_put().

const fmtflags std::ios_base::oct [static, inherited]

Converts integer input or generates integer output in octal base.

Definition at line 281 of file ios_base.h.

Referenced by std::oct(), and std::basic_ostream::operator<<().

const openmode std::ios_base::out [static, inherited]

Open for output. Default for ofstream and fstream.

Definition at line 380 of file ios_base.h.

Referenced by std::basic_ofstream::open(), std::basic_ostream::tellp(), and std::basic_ostream::seekp().

const fmtflags std::ios_base::right [static, inherited]

Adds fill characters on the left (initial positions) of certain generated output. (I.e., the thing you print is flush right.)

Definition at line 285 of file ios_base.h.

Referenced by std::right().

const fmtflags std::ios_base::scientific [static, inherited]

Generates floating-point output in scientific notation.

Definition at line 288 of file ios_base.h.

Referenced by std::scientific().

const fmtflags std::ios_base::showbase [static, inherited]

Generates a prefix indicating the numeric base of generated integer output.

Definition at line 292 of file ios_base.h.

Referenced by std::showbase(), and std::noshowbase().

const fmtflags std::ios_base::showpoint [static, inherited]

Generates a decimal-point character unconditionally in generated floating-point output.

Definition at line 296 of file ios_base.h.

Referenced by std::showpoint(), and std::noshowpoint().

const fmtflags std::ios_base::showpos [static, inherited]

Generates a + sign in non-negative generated numeric output.

Definition at line 299 of file ios_base.h.

Referenced by std::showpos(), and std::noshowpos().

const fmtflags std::ios_base::skipws [static, inherited]

Skips leading white space before certain input operations.

Definition at line 302 of file ios_base.h.

Referenced by std::skipws(), and std::noskipws().

const openmode std::ios_base::trunc [static, inherited]

Open for input. Default for ofstream.

Definition at line 383 of file ios_base.h.

const fmtflags std::ios_base::unitbuf [static, inherited]

Flushes output after each output operation.

Definition at line 305 of file ios_base.h.

Referenced by std::unitbuf(), and std::nounitbuf().

const fmtflags std::ios_base::uppercase [static, inherited]

Replaces certain lowercase letters with their uppercase equivalents in generated output.

Definition at line 309 of file ios_base.h.

Referenced by std::uppercase(), and std::nouppercase().


The documentation for this class was generated from the following files: