std::basic_ostream::write — cppreference.com

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`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)

Cette fonction est une fonction de sortie non formatée: il commencer l'exécution par la construction d'un objet de 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)

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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Paramètres

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

Retourne la valeur

*this

Notes

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 :

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) [edit]

	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) [edit]