Varianti

    std::ctime

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    <metanoindex/>

     
    C++
     
    Utilità libreria
    Tipo di supporto (basic types, RTTI, type traits)
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    Funzione oggetti
    initializer_list(C++11)
    bitset
    hash(C++11)
    Gli operatori relazionali
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    Relational operators
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    rel_ops::operator!=
    rel_ops::operator>
    rel_ops::operator<=
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    Coppie e tuple
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    Pairs and tuples
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    pair
    tuple(C++11)
    piecewise_construct_t(C++11)
    piecewise_construct(C++11)
    Swap, in avanti e spostare
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    Swap, forward and move
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    swap
    forward(C++11)
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    Data e ora utilità
     
    C-stile di data e ora utilità
    Funzioni
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    Functions
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    Tempo di manipolazione
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    Time manipulation
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    difftime
    time
    clock
    Formato conversioni
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    Format conversions
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    asctime
    ctime
    strftime
    wcsftime
    gmtime
    localtime
    mktime
    Costanti
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    Constants
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    CLOCKS_PER_SEC
    Tipi
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    Types
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    tm
    time_t
    clock_t
     
    <tbody> </tbody>
    Elemento definito nell'header <ctime>
    char* ctime( const std::time_t* time );
    Converte dato il tempo da epoca ad un tempo calendario locale e quindi a una rappresentazione testuale, come se chiamando std::asctime(std::localtime(time)). La stringa risultante ha il seguente formato:
    Original:
    Converts given time since epoch to a calendar local time and then to a textual representation, as if by calling std::asctime(std::localtime(time)). The resulting string has the following format:
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    Www Mmm dd hh:mm:ss yyyy
    • Www - il giorno della settimana (uno dei Mon, Tue, Wed, Thu, Fri, Sat, Sun).
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      Www - the day of the week (one of Mon, Tue, Wed, Thu, Fri, Sat, Sun).
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    • Mmm - il mese (uno dei Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec).
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      Mmm - the month (one of Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec).
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    • dd - il giorno del mese
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      dd - the day of the month
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    • hh - ore
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      hh - hours
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    • mm - minuti
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      mm - minutes
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    • ss - secondi
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      ss - seconds
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    • yyyy - anni
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      yyyy - years
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    La funzione non supporta la localizzazione.
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    The function does not support localization.
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    Parametri

    time -
    puntatore a un oggetto std::time_t specifica il tempo di stampa
    Original:
    pointer to a std::time_t object specifying the time to print
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    Valore di ritorno

    Puntatore ad una stringa con terminazione null personaggio che tiene la rappresentazione testuale di data e ora. La stringa può essere condiviso tra std::asctime e std::ctime, e può essere sovrascritto ad ogni invocazione di una di queste funzioni.
    Original:
    Pointer to a static null-terminated character string holding the textual representation of date and time. The string may be shared between std::asctime and std::ctime, and may be overwritten on each invocation of any of those functions.
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    Note

    Questa funzione restituisce un puntatore a dati statici e non è thread-safe. Inoltre, modifica l'oggetto statico std::tm che possono essere condivise con std::gmtime e std::localtime. POSIX segna questa funzione obsoleta e raccomanda std::strftime invece.
    Original:
    This function returns a pointer to static data and is not thread-safe. In addition, it modifies the static std::tm object which may be shared with std::gmtime and std::localtime. POSIX marks this function obsolete and recommends std::strftime instead.
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    Il comportamento può essere definito per i valori di time_t che risultato nella stringa più lunga di 25 caratteri (ad esempio: anno 10000)
    Original:
    The behavior may be undefined for the values of time_t that result in the string longer than 25 characters (e.g. year 10000)
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    Esempio

    #include <ctime>
#include <iostream>

int main()
{
    std::time_t result = std::time(NULL);
    std::cout << std::ctime(&result);
}

    Output: 

    Tue Dec 27 17:21:29 2011

    Vedi anche
    converte un oggetto tm di una rappresentazione testuale
    Original:
    converts a tm object to a textual representation
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    (funzione) [modifica]
    converte un oggetto personalizzato per tm rappresentazione testuale
    Original:
    converts a tm object to custom textual representation
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    (funzione) [modifica]
    (C++11)
    i formati e le uscite di un valore data / ora secondo il formato specificato
    Original:
    formats and outputs a date/time value according to the specified format
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    (funzione di modello) [modifica]
    C documentation for ctime