std::basic_ostream::write
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<tbody> </tbody> basic_ostream& write( const char_type* s, std::streamsize count ); |
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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
countcharacters are inserted - inserting into the output sequence fails (in which case
setstate(badbit)is called)
sentry type, qui vide les tampons de sortie tie()'d si nécessaire et vérifie les erreurs de flux. Après la construction, si les rendements objet sentinelle false, la fonction retourne sans tenter aucune sortie. Si une exception est levée lors de la sortie, puis ios :: BadBit est activé (l'exception est supprimée, sauf exceptions()&badbit != 0, auquel cas il est relancée)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)You can help to correct and verify the translation. Click here for instructions.
Paramètres
| s | - | pointer to the character string to write |
| count | - | number of characters to write |
Retourne la valeur
*this
Notes
signed char ou unsigned char, contrairement à la You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.
signed char or unsigned char, unlike the formatted You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.
You can help to correct and verify the translation. Click here for instructions.
Also, unlike the formatted output functions, this function does not set the failbit on failure.
Exceptions
If an exception occurs during output and exceptions()&badbit != 0, rethrows that exception.
If output fails and exceptions()&badbit != 0, throws ios_base::failure.
Exemple
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';
}
Résultat :
DCBA
Voir aussi
insère des données de caractères Original: inserts character data The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction) | |
insère un caractère Original: inserts a character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction membre publique) | |