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std::basic_ostream::write

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< cpp‎ | io‎ | basic ostream

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C++
 
Input / Output-Bibliothek
I / O-Manipulatoren
C-style I / O
Puffern
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Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(veraltet)
Streams
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Streams
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Abstraktionen
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Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
Datei-I / O
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File I/O
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basic_ifstream
basic_ofstream
basic_fstream
String I / O
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String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Array I / O
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Array I/O
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istrstream(veraltet)
ostrstream(veraltet)
strstream(veraltet)
Types
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Types
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streamoff
streamsize
fpos
Fehler Kategorie Schnittstelle
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Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_ostream
Globale Objekte
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Global objects
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Member-Funktionen
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Member functions
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basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator=(C++11)
Formatierte Eingabe
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Formatted input
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basic_ostream::operator<<
Unformatierte Eingabe
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Unformatted input
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basic_ostream::put
basic_ostream::write
Positionierung
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Positioning
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basic_ostream::tellp
basic_ostream::seekp
Verschiedenes
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Miscellaneous
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basic_ostream::flush
basic_ostream::swap(C++11)
Mitglied Klassen
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Member classes
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basic_ostream::sentry
Non-Member-Funktionen
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Non-member functions
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operator<<(std::basic_ostream)
 
basic_ostream& write( const char_type* s, std::streamsize count );

Outputs characters from successive locations in the character array whose first element is pointed to by s. Characters are inserted into the output sequence until one of the following occurs:

  • exactly count characters are inserted
  • inserting into the output sequence fails (in which case setstate(badbit) is called)
Diese Funktion ist eine unformatierte Ausgabe Funktion: es beginnt die Ausführung durch den Bau ein Objekt vom Typ sentry, die spült die tie()'d Ausgabepuffer wenn nötig und die Stream-Fehler überprüft. Nach dem Bau, wenn die Wache Objekt kehrt false, gibt die Funktion ohne zu versuchen, keine Ausgabe. Wenn eine Ausnahme während der Ausgabe ausgelöst wird, dann ios :: badbit gesetzt ist (die Ausnahme unterdrückt sofern exceptions()&badbit != 0, in welchem ​​Fall es wird erneut ausgelöst)
Original:
This function is an unformatted output function: it begin execution by constructing an object of type sentry, which flushes the tie()'d output buffers if necessary and checks the stream errors. After construction, if the sentry object returns false, the function returns without attempting any output. If an exception is thrown during output, then ios::badbit is set (the exception is suppressed unless exceptions()&badbit != 0, in which case it is rethrown)
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Inhaltsverzeichnis

[Bearbeiten] Parameter

s - pointer to the character string to write
count - number of characters to write

[Bearbeiten] Rückgabewert

*this

[Bearbeiten] Notes

Diese Funktion ist nicht für die Typen überlastet signed char oder unsigned char, im Gegensatz zu den formatierten <div class="t-tr-text">operator <<
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operator<<
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This function is not overloaded for the types signed char or unsigned char, unlike the formatted
operator <<
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operator<<
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</div>
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Also, unlike the formatted output functions, this function does not set the failbit on failure.

[Bearbeiten] Ausnahmen

If an exception occurs during output and exceptions()&badbit != 0, rethrows that exception.

If output fails and exceptions()&badbit != 0, throws ios_base::failure.

[Bearbeiten] Beispiel

This function may be used to output object representations, i.e. binary output 

#include <iostream>
int main()
{
    int n = 0x41424344;
    std::cout.write(reinterpret_cast<char*>(&n), sizeof n);
    std::cout << '\n';
}

Output: 

DCBA

[Bearbeiten] Siehe auch
Einsätze Zeichendaten
Original:
inserts character data
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(Funktion) [edit]
fügt ein Zeichen
Original:
inserts a character
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(öffentliche Elementfunktion) [edit]
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