std::mktime
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<metanoindex/>
<tbody> </tbody>| definiert in Header <ctime>
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std::time_t mktime( std::tm* time ); |
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Konvertiert lokalen Kalender auf eine Zeit, da Epoche als std::time_t Objekt, ignoriert die Werte
time->tm_wday und time->yday. Die Werte der anderen Komponenten time nicht auf ihre üblichen Bereiche beschränkt. Ein negativer Wert von time->tm_isdst verursacht mktime zu versuchen, festzustellen, ob Daylight Saving Time in Kraft war .Original:
Converts local calendar time to a time since epoch as a std::time_t object, ignoring the values of
time->tm_wday and time->yday. The values of other components of time are not restricted to their usual ranges. A negative value of time->tm_isdst causes mktime to attempt to determine if Daylight Saving Time was in effect.The text has been machine-translated via Google Translate.
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Wenn dies gelingt, berechnet und aktualisiert alle Felder in
time an ihren richtigen Bereiche zu passen .Original:
If successful, recalculates and updates all fields in
time to fit their proper ranges.The text has been machine-translated via Google Translate.
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Parameter
| time | - | Zeiger auf ein Objekt std::tm Angabe lokalen Kalender Zeit zu konvertieren
Original: pointer to a std::tm object specifying local calendar time to convert The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Rückgabewert
Zeit seit Epoche als std::time_t Objekt auf Erfolg oder
-1 wenn time nicht als std::time_t Objekt dargestellt werden .Original:
Time since epoch as a std::time_t object on success or
-1 if time cannot be represented as a std::time_t object.The text has been machine-translated via Google Translate.
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Beispiel
Zeigt die Zeit 100 Monaten
Original:
Display the time 100 months ago
The text has been machine-translated via Google Translate.
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#include <iostream>
#include <iomanip>
#include <ctime>
int main()
{
std::time_t t = std::time(NULL);
std::tm tm = *std::localtime(&t);
std::cout << "Today is " << std::put_time(&tm, "%c %Z") <<'\n';
tm.tm_mon -= 100;
std::mktime(&tm);
std::cout << "100 months ago was " << std::put_time(&tm, "%c %Z") << '\n';
}
Output:
Today is Wed Dec 28 09:56:10 2011 EST
100 months ago was Thu Aug 28 10:56:10 2003 EDT
Siehe auch
wandelt Mal seit Epoche Kalender Zeit ausgedrückt als lokale Zeit Original: converts time since epoch to calendar time expressed as local time The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) | |
C documentation for mktime
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