CODEWITHSUNDEEP
cwindowsvisual-studio
Erik Friesen
Erik Friesen

Reputation: 175

mktime failure on windows

Using visual studio 2013, creating a standard win32 console application, mktime returns negative(-1) regardless of params passed.

Are there any reasons this code should fail this way? I can't tell that any combination of tm params passed makes any difference.

#include "stdafx.h"
#include <time.h>

int _tmain(int argc, _TCHAR* argv[])
{
    struct tm stm;
    stm.tm_sec = 27;
    stm.tm_min = 5;
    stm.tm_hour = 18;
    stm.tm_mday = 2;
    stm.tm_mon = 1;
    stm.tm_year = 2015;
    stm.tm_wday = 0;
    stm.tm_yday = 0;
    printf("%lld\n", mktime(&stm));//prints -1
    return 0;
}

Upvotes: 0

Views: 760

Answers (1)

Axel Kemper
Axel Kemper

Reputation: 11322

Your value 2015 for stm.tm_year is invalid. Subtract 1900 es explained in MSDN.

Note that the month values start with 0 for January.

Upvotes: 5

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