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<ios>
basic_ios
widen
public member function
<ios> <iostream>
std::
basic_ios
::widen
char_type widen (char c) const;
Widen character
Returns the transformation of the narrow character
c
to its equivalent of type
char_type
(generally, a wide character type).
This function returns the result of calling the
ctype::widen
facet of the
locale
object currently
imbued
in the stream.
Parameters
c
Narrow character to be
widened
.
Return Value
The
char_type
equivalent of
c
.
Member type
char_type
is the type of characters used by the stream (i.e., its first class template parameter,
charT
).
Data races
Accesses the stream object.
Concurrent access to the same stream object may cause data races.
Exception safety
Strong guarantee:
if an exception is thrown, there are no changes in the stream.
See also
basic_ios::narrow
Narrow character
(public member function )
ctype::narrow
Narrow character(s)
(public member function )
C++
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Reference
C library:
<cassert> (assert.h)
<cctype> (ctype.h)
<cerrno> (errno.h)
<cfenv> (fenv.h)
<cfloat> (float.h)
<cinttypes> (inttypes.h)
<ciso646> (iso646.h)
<climits> (limits.h)
<clocale> (locale.h)
<cmath> (math.h)
<csetjmp> (setjmp.h)
<csignal> (signal.h)
<cstdarg> (stdarg.h)
<cstdbool> (stdbool.h)
<cstddef> (stddef.h)
<cstdint> (stdint.h)
<cstdio> (stdio.h)
<cstdlib> (stdlib.h)
<cstring> (string.h)
<ctgmath> (tgmath.h)
<ctime> (time.h)
<cuchar> (uchar.h)
<cwchar> (wchar.h)
<cwctype> (wctype.h)
Containers:
<array>
<deque>
<forward_list>
<list>
<map>
<queue>
<set>
<stack>
<unordered_map>
<unordered_set>
<vector>
Input/Output:
<fstream>
<iomanip>
<ios>
<iosfwd>
<iostream>
<istream>
<ostream>
<sstream>
<streambuf>
Multi-threading:
<atomic>
<condition_variable>
<future>
<mutex>
<thread>
Other:
<algorithm>
<bitset>
<chrono>
<codecvt>
<complex>
<exception>
<functional>
<initializer_list>
<iterator>
<limits>
<locale>
<memory>
<new>
<numeric>
<random>
<ratio>
<regex>
<stdexcept>
<string>
<system_error>
<tuple>
<type_traits>
<typeindex>
<typeinfo>
<utility>
<valarray>
<ios>
types:
basic_ios
fpos
io_errc
ios
ios_base
streamoff
streampos
streamsize
wios
wstreampos
manipulators:
boolalpha
dec
defaultfloat
fixed
hex
hexfloat
internal
left
noboolalpha
noshowbase
noshowpoint
noshowpos
noskipws
nounitbuf
nouppercase
oct
right
scientific
showbase
showpoint
showpos
skipws
unitbuf
uppercase
other functions:
iostream_category
basic_ios
basic_ios::~basic_ios
basic_ios::basic_ios
public members:
basic_ios::bad
basic_ios::clear
basic_ios::copyfmt
basic_ios::eof
basic_ios::exceptions
basic_ios::fail
basic_ios::fill
basic_ios::good
basic_ios::imbue
basic_ios::narrow
basic_ios::operator bool
basic_ios::operator!
basic_ios::rdbuf
basic_ios::rdstate
basic_ios::setstate
basic_ios::tie
basic_ios::widen
protected members:
basic_ios::init
basic_ios::move
basic_ios::set_rdbuf
basic_ios::swap