Qt: format an integer in a QString

c++ qt integer format qstring
Jeanstackamort picture Jeanstackamort · Feb 25, 2014 · Viewed 14.4k times · Source

I would like to format an integer in a QString. I would like to always have 6 numbers. For example "1" should be "000001" and "12" should be "000012".

I try to do like with printf(%06d, number). So I wrote this

QString test; test = QString("%06d").arg(QString::number(i)); qDebug()<<test;

i is implemented in a loop for. But it does not work since I have:

"0d" "1d" "2d" "3d"...

Does anyone know how to do this please?

Answer

Kuba hasn&#39;t forgotten Monica picture Kuba hasn't forgotten Monica · Feb 25, 2014

String's argument support doesn't work like printf. It's all documented. What you want is:

QString test = QString("%1").arg(i, 6, 10, QLatin1Char('0'));

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