std::basic_ios::bad
De cppreference.com
|
|
This page has been machine-translated from the English version of the wiki using Google Translate.
The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here. |
<metanoindex/>
<tbody> </tbody> bool bad() const; |
||
Retours
true si erreur non récupérable s'est produite sur le flux associé. Plus précisément, les rendements true si badbit est situé dans rdstate() .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.
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.
La bibliothèque standard définit BadBit dans les situations suivantes:
Original:
The standard library sets badbit in the following situations:
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.
- L'insertion dans le flux de sortie par put () ou write () échoue pour une raison quelconque .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. - L'insertion dans le flux de sortie par << opérateur, std::put_money ou std::put_time, n'a pas pu terminer parce que la fin du flux de sortie a été atteint (fonction La facette de formatage de sortie tels que num_put::put() ou money_put::put(), retourne un itérateur
itertels queiter.failed()==true)Original:Insertion into the output stream by << opérateur, 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 est construit avec un pointeur NULL pour rdbuf (), ou putback () / unget () est appelée sur un ruisseau avec un rdbuf nulle (), ou un pointeur NULL passé à l'opérateur << (* basic_streambuf)Original: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 () ou rdbuf () -> sungetc () de retour traits :: eof () à putback () ou 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 () retourne
-1pour synchroniser (), pour flush (), ou le destructeur de ostream :: sentinelle sur un flux unitbufOriginal: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. - Exception est levée au cours d'une opération d'E / S par une fonction membre de la mémoire tampon de flux associé (par exemple sbumpc (), xsputn (), sgetc (), de trop-plein (), 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. - Exception est levée dans iword () ou motpasse () (par exemple 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.
You can help to correct and verify the translation. Click here for instructions.
Paramètres
(Aucun)
Original:
(none)
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.
Retourne la valeur
true si une erreur irrécupérable s'est produite, false autrement .Original:
true if a non-recoverable error has occurred, false otherwise.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.
Exemple
#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";
}
Voir aussi
| 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 |