Varianti

    std::asctime

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    <metanoindex/>

     
    C++
     
    Utilità libreria
    Tipo di supporto (basic types, RTTI, type traits)
    Gestione della memoria dinamica
    La gestione degli errori
    Programma di utilità
    Funzioni variadic
    Data e ora
    Funzione oggetti
    initializer_list(C++11)
    bitset
    hash(C++11)
    Gli operatori relazionali
    Original:
    Relational operators
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    rel_ops::operator!=
    rel_ops::operator>
    rel_ops::operator<=
    rel_ops::operator>=
    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)
    move(C++11)
    move_if_noexcept(C++11)
    declval(C++11)
     
    Data e ora utilità
     
    C-stile di data e ora utilità
    Funzioni
    Original:
    Functions
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    Tempo di manipolazione
    Original:
    Time manipulation
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    difftime
    time
    clock
    Formato conversioni
    Original:
    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* asctime( const std::tm* time_ptr );
    Converte dato il tempo std::tm calendario per una rappresentazione testuale.
    Original:
    Converts given calendar time std::tm to a textual representation.
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    La stringa risultante ha il seguente formato:
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    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).
      Original:
      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
      Original:
      dd - the day of the month
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    • hh - ore
      Original:
      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.
    Original:
    The function does not support localization.
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    Parametri

    time_ptr -
    puntatore a un oggetto std::tm specifica il tempo di stampa
    Original:
    pointer to a std::tm 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. POSIX segna questa funzione obsoleta e raccomanda std::strftime invece.
    Original:
    This function returns a pointer to static data and is not thread-safe. POSIX marks this function obsolete and recommends std::strftime instead.
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    Il comportamento è indefinito se la stringa di output sarebbe più lungo di 25 caratteri, se timeptr->tm_wday o timeptr->tm_mon non sono entro i limiti previsti, o se supera timeptr->tm_year INT_MAX-1990.
    Original:
    The behavior is undefined if the output string would be longer than 25 characters, if timeptr->tm_wday or timeptr->tm_mon are not within the expected ranges, or if timeptr->tm_year exceeds INT_MAX-1990.
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    Alcune implementazioni di gestire timeptr->tm_mday==0 nel senso l'ultimo giorno del mese precedente.
    Original:
    Some implementations handle timeptr->tm_mday==0 as meaning the last day of the preceding month.
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    Esempio

    #include <ctime>
#include <iostream>

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

    Output: 

    Tue Dec 27 16:45:52 2011

    Vedi anche
    converte un oggetto time_t di una rappresentazione testuale
    Original:
    converts a time_t 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 asctime