QDate - wrong year

Question

I have the following situation:

   QDate fixDate = QDate::fromString(QString("270912"), "ddMMyy");

the year returned is 1912. I do not understand why and how get the correct year.

Thanks in advance

score 10 · Accepted Answer · edited Sep 27 '12 at 14:24

10

Two-digit year is always interpretating as 19xx. So You can pass YYYY or just add 100 to years.

edited Sep 27 '12 at 14:24

Blackbelt

156,034
29
297
305

answered Sep 27 '12 at 14:14

Dmitry Melnikov

743
4
13

Sorry, QT internal documentation does not mention this, but this is usual behaivour of two-digit year interpretators. Qdate::fromString("01", "yy") returns 1901 f.e. [code]QDate fixDate = QDate::fromString(QString("270912"), "ddMMyy").addYears(100);[/code] will solve Your problem – Dmitry Melnikov Sep 27 '12 at 14:21
In a way I find this behaviour reasonable. Thank you – Blackbelt Sep 27 '12 at 14:24

score 2 · Answer 2 · answered Sep 27 '12 at 13:42

2

As described in the docs:

For any field that is not represented in the format the following defaults are used:
Year 1900
Month 1
Day 1

// For example:
QDate::fromString("1.30", "M.d");           // January 30 1900
QDate::fromString("20000110", "yyyyMMdd");  // January 10, 2000

(Excuse the formatting, it's in a table in the docs). So you are going to have to pass the full year into the method until Qt decide 2012 is far enough into the century to change the default...

answered Sep 27 '12 at 13:42

cmannett85

21,725
8
76
119

I see. I am reading that particular string from an nmea sentence. So I do not want to tamper it – Blackbelt Sep 27 '12 at 14:14
Well you are going to have to tweak the `QDate` output then otherwise you're stuck in the last century! – cmannett85 Sep 27 '12 at 14:23

score 1 · Answer 3 · edited Sep 27 '12 at 14:28

1

Could you use ddMMyyyy instead of ddMMyy? Or you need date in this format?

Look here for more information about fromString method

edited Sep 27 '12 at 14:28

Blackbelt

156,034
29
297
305

answered Sep 27 '12 at 13:44

Dmitry Stukalov

194
1
13

QDate - wrong year

3 Answers3

Linked

Related