Varianti

    std::showpoint, std::noshowpoint

    Da cppreference.com.
    < cpp | io | manip

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    <metanoindex/>

     
    C++
     
    Ingresso / libreria di output
    I / O manipolatori
    C-style I / O
    Buffer
    Original:
    Buffers
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    basic_streambuf
    basic_filebuf
    basic_stringbuf
    strstreambuf(deprecato)
    Streams
    Original:
    Streams
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    Astrazioni
    Original:
    Abstractions
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    ios_base
    basic_ios
    basic_istream
    basic_ostream
    basic_iostream
    File I / O
    Original:
    File I/O
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    basic_ifstream
    basic_ofstream
    basic_fstream
    String I / O
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    String I/O
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    basic_istringstream
    basic_ostringstream
    basic_stringstream
    Array I / O
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    Array I/O
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    istrstream(deprecato)
    ostrstream(deprecato)
    strstream(deprecato)
    Tipi
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    Types
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    streamoff
    streamsize
    fpos
    Errore categoria interfaccia
    Original:
    Error category interface
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    iostream_category(C++11)
    io_errc(C++11)
     
    Ingresso / uscita manipolatori
    Virgola mobile formattazione
    Original:
    Floating-point formatting
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    Formattazione Integer
    Original:
    Integer formatting
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    Formattazione Boolean
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    Boolean formatting
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    boolalpha
    noboolalpha
    Larghezza del campo e il controllo di riempimento
    Original:
    Field width and fill control
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    Di formattazione
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    Other formatting
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    Elaborazione degli spazi vuoti
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    Whitespace processing
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    Uscita di lavaggio
    Original:
    Output flushing
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    Flag di stato manipolazione
    Original:
    Status flags manipulation
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    Tempo e denaro I / O
    Original:
    Time and money I/O
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    get_money(C++11)
    get_time(C++11)
    put_money(C++11)
    put_time(C++11)
     
    <tbody> </tbody>
    Elemento definito nell'header <ios>
    std::ios_base& showpoint( std::ios_base& str );
    		 (1)
    std::ios_base& noshowpoint( std::ios_base& str );
    		 (2)
    Attiva o disattiva l'inclusione incondizionata del carattere punto decimale in virgola mobile di uscita. Non ha alcun effetto su ingresso.
    Original:
    Enables or disables the unconditional inclusion of the decimal point character in floating-point output. Has no effect on input.
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    1)

    consente la bandiera showpoint nel str flusso come se chiamando str.setf(std::ios_base::showpoint)
    Original:
    enables the showpoint flag in the stream str as if by calling str.setf(std::ios_base::showpoint)
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    2)

    disabilita la bandiera showpoint nel str flusso come se chiamando str.unsetf(std::ios_base::showpoint)
    Original:
    disables the showpoint flag in the stream str as if by calling str.unsetf(std::ios_base::showpoint)
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    Si tratta di un manipolatore di I / O, può essere chiamato con espressioni quali out << std::showpoint per qualsiasi out di std::basic_ostream tipo o con un'espressione come in >> std::showpoint per qualsiasi in di std::basic_istream tipo.
    Original:
    This is an I/O manipulator, it may be called with an expression such as out << std::showpoint for any out of type std::basic_ostream or with an expression such as in >> std::showpoint for any in of type std::basic_istream.
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    Parametri

    str -
    riferimento al flusso di I / O
    Original:
    reference to I/O stream
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    Valore di ritorno

    str (riferimento al flusso dopo la manipolazione)
    Original:
    str (reference to the stream after manipulation)
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    Esempio

    #include <iostream>
int main()
{
    std::cout << "1.0 with showpoint: " << std::showpoint << 1.0 << '\n'
              << "1.0 with noshowpoint: " << std::noshowpoint << 1.0 << '\n';
}

    Output: 

    1.0 with showpoint: 1.00000
1.0 with noshowpoint: 1

    Vedi anche
    cancella le bandiere ios_base specificati
    Original:
    clears the specified ios_base flags
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    (funzione) [modifica]
    imposta i flag ios_base specificati
    Original:
    sets the specified ios_base flags
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    (funzione) [modifica]