std::boolalpha, std::noboolalpha
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<metanoindex/>
<tbody> </tbody>| definiert in Header <ios>
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std::ios_base& boolalpha( std::ios_base& str ); |
(1) | |
std::ios_base& noboolalpha( std::ios_base& str ); |
(2) | |
1)
ermöglicht die
boolalpha Flagge in den Strom str, als ob durch den Aufruf str.setf(std::ios_base::boolalpha)Original:
enables the
boolalpha flag in the stream str as if by calling str.setf(std::ios_base::boolalpha)The text has been machine-translated via Google Translate.
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2)
deaktiviert die
boolalpha Flagge in den Strom str, als ob durch den Aufruf str.unsetf(std::ios_base::boolalpha)Original:
disables the
boolalpha flag in the stream str as if by calling str.unsetf(std::ios_base::boolalpha)The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
std::boolalpha wird ein I / O-Manipulator, so kann es mit einem Expressionsvektor wie out << std::boolalpha für jede out vom Typ std::basic_ostream oder mit einem Expressionsvektor wie in >> std::boolalpha für jede in vom Typ std::basic_istream aufgerufen werden .Original:
std::boolalpha is an I/O manipulator, so it may be called with an expression such as out << std::boolalpha for any out of type std::basic_ostream or with an expression such as in >> std::boolalpha for any in of type std::basic_istream.The text has been machine-translated via Google Translate.
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Parameter
| str | - | Verweisen auf I / O-Strom
Original: reference to I/O stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Rückgabewert
str (Verweis auf den Stream nach Manipulation)Original:
str (reference to the stream after manipulation)The text has been machine-translated via Google Translate.
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Beispiel
#include <sstream>
#include <locale>
#include <iostream>
int main()
{
// boolalpha output
std::cout << std::boolalpha
<< "boolalpha true: " << true << '\n'
<< "boolalpha false: " << false << '\n';
std::cout << std::noboolalpha
<< "noboolalpha true: " << true << '\n'
<< "noboolalpha false: " << false << '\n';
// booalpha parse
bool b1, b2;
std::istringstream is("true false");
is >> std::boolalpha >> b1 >> b2;
std::cout << '\"' << is.str() << "\" parsed as " << b1 << ' ' << b2 << '\n';
}
Output:
boolalpha true: true
boolalpha false: false
noboolalpha true: 1
noboolalpha false: 0
"true false" parsed as 1 0
Siehe auch
Vorlage:cpp/locale/numpunct/dsc do truenameVorlage:cpp/locale/numpunct/dsc do falsename löscht die angegebene ios_base Fahnen Original: clears the specified ios_base flags The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) | |
Legt die angegebene ios_base Fahnen Original: sets the specified ios_base flags The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) | |