Varianti

    std::fwrite

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    <metanoindex/>

     
    C++
     
    Ingresso / libreria di output
    I / O manipolatori
    C-style I / O
    Buffer
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    Buffers
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    basic_streambuf
    basic_filebuf
    basic_stringbuf
    strstreambuf(deprecato)
    Streams
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    Streams
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    Astrazioni
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    Abstractions
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    ios_base
    basic_ios
    basic_istream
    basic_ostream
    basic_iostream
    File I / O
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    File I/O
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    basic_ifstream
    basic_ofstream
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    String I / O
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    String I/O
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    basic_istringstream
    basic_ostringstream
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    Array I / O
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    Array I/O
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    istrstream(deprecato)
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    Tipi
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    streamoff
    streamsize
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    Error category interface
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    iostream_category(C++11)
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    C-style I / O
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    Accesso ai file
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    Diretta input / output
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    Direct input/output
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    fread
    fwrite
    Ingresso formattato / uscita
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    Unformatted input/output
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    Formattato di input / output
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    Formatted input/output
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    File di posizionamento
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    ftell
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    La gestione degli errori
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    clearerr
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    Le operazioni sui file
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    Operations on files
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    remove
    rename
    tmpfile
    tmpnam
     
    <tbody> </tbody>
    Elemento definito nell'header <cstdio>
    int fwrite( const void* buffer, std::size_t size, std::size_t count, std::FILE* stream );

    Writes up to count objects from the given array buffer to the output stream stream as if by reinterepreting each object as an array of unsigned char and calling std::fputc size times for each object to write those unsigned chars into stream, in order. The file position indicator for the stream is advanced by the number of characters written.

    Se gli oggetti non sono TriviallyCopyable, il comportamento non è definito.
    Original:
    If the objects are not TriviallyCopyable, the behavior is undefined.
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    Se si verifica un errore, il valore risultante dell'indicatore file di posizione per il flusso è
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    If an error occurs, the resulting value of the file position indicator for the stream is
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    indeterminate.

    Parametri

    buffer -
    puntatore all'oggetto primo oggetto nella matrice da scrivere
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    pointer to the first object object in the array to be written
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    size -
    dimensione di ciascun oggetto
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    size of each object
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    count -
    il numero degli oggetti da scrivere
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    the number of the objects to be written
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    Valore di ritorno

    Number of objects written successfully, which may be less than count if an error occurred.

    Se size o count è pari a zero, fwrite restituisce zero e non esegue alcuna altra azione.
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    If size or count is zero, fwrite returns zero and performs no other action.
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    Esempio

    This section is incomplete
    Reason: no example

    Vedi anche




    (C++11)
    stampe formattata uscita stdout, un flusso di file o di un buffer
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    prints formatted output to stdout, a file stream or a buffer
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    (funzione) [modifica]
    Scrive una stringa di caratteri in un flusso di file
    Original:
    writes a character string to a file stream
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    (funzione) [modifica]
    legge da un file
    Original:
    reads from a file
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    (funzione) [modifica]
    C documentation for fwrite