std::basic_ios::bad
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<tbody> </tbody> bool bad() const; |
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true wenn nicht behebbarer Fehler ist auf der zugehörigen Stream aufgetreten. Insbesondere kehrt true wenn badbit in rdstate() gesetzt .Original:
Returns
true if non-recoverable error has occurred on the associated stream. Specifically, returns true if badbit is set in rdstate().The text has been machine-translated via Google Translate.
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Die Standard-Bibliothek setzt BadBit in den folgenden Situationen:
Original:
The standard library sets badbit in the following situations:
The text has been machine-translated via Google Translate.
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- Einsetzen in den Ausgabe-Stream von put () oder write () aus irgendeinem Grund ausfällt .Original:Insertion into the output stream by put() or write() fails for any reason.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions. - Einsetzen in den Ausgabe-Stream von operator <<, std::put_money oder std::put_time, konnte nicht abgeschlossen werden, da das Ende der Ausgabe-Stream erreicht wurde (die Facette der Formatierung ausgegeben Funktion wie num_put::put() oder money_put::put(), liefert einen Iterator
iterso dassiter.failed()==true)Original:Insertion into the output stream by operator <<, std::put_money or std::put_time, could not complete because the end of the output stream was reached (The facet's formatting output function such as num_put::put() or money_put::put(), returns an iteratoritersuch thatiter.failed()==true)The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions. - Stream ist mit einem Null-Zeiger für RDBUF () konstruiert oder putback () / unget () wird auf einen Strom mit einer null RDBUF () oder eine Null-Zeiger übergeben operator << (basic_streambuf *) genanntOriginal:Stream is constructed with a null pointer for rdbuf(), or putback()/unget() is called on a stream with a null rdbuf(), or a null pointer passed to operator<<(basic_streambuf*)The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions. - RDBUF () -> sputbackc () oder RDBUF () -> sungetc () return Eigenschaften :: eof (), um putback () oder unget ()Original:rdbuf()->sputbackc() or rdbuf()->sungetc() return traits::eof() to putback() or unget()The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions. - RDBUF () -> pubsync () gibt
-1zu synchronisieren (), um flush (), oder an den Destruktor ostream :: sentry auf einem unitbuf StreamOriginal:rdbuf()->pubsync() returns-1to sync(), to flush(), or to the destructor of ostream::sentry on a unitbuf streamThe text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions. - Ausnahme wird während einer I / O-Operation von jedem Mitglied Funktion der zugehörigen Strompuffers geworfen (zB sbumpc (), xsputn (), sgetc (), overflow (), etc)Original:Exception is thrown during an I/O operation by any member function of the associated stream buffer (e.g. sbumpc(), xsputn(), sgetc(), overflow(), etc)The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions. - Ausnahme ist in iword () oder PWord (geworfen) (zB std :: bad_alloc)Original:Exception is thrown in iword() or pword() (e.g. std::bad_alloc)The text has been machine-translated via Google Translate.
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Parameter
(None)
Original:
(none)
The text has been machine-translated via Google Translate.
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Rückgabewert
true wenn ein nicht behebbarer Fehler aufgetreten ist, false sonst .Original:
true if a non-recoverable error has occurred, false otherwise.The text has been machine-translated via Google Translate.
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Beispiel
#include <iostream>
#include <fstream>
#include <cstdlib>
int main()
{
std::ifstream file("test.txt");
if(!file) // operator! is used here
{
std::cout << "File opening failed\n";
return EXIT_FAILURE;
}
// typical C++ I/O loop uses the return value of the I/O function
// as the loop controlling condition, operator bool() is used here
for(int n; file >> n; ) {
std::cout << n << ' ';
}
std::cout << '\n';
if (file.bad())
std::cout << "I/O error while reading\n";
else if (file.eof())
std::cout << "End of file reached successfully\n";
else if (file.fail())
std::cout << "Non-integer data encountered\n";
}
Siehe auch
| ios_base::iostate flags | basic_ios accessors | |||||||
| eofbit | failbit | badbit | good() | fail() | bad() | eof() | operator bool() | operator!() |
| false | false | false | true | false | false | false | true | false |
| false | false | true | false | true | true | false | false | true |
| false | true | false | false | true | false | false | false | true |
| false | true | true | false | true | true | false | false | true |
| true | false | false | false | false | false | true | true | false |
| true | false | true | false | true | true | true | false | true |
| true | true | false | false | true | false | true | false | true |
| true | true | true | false | true | true | true | false | true |