how to set double precision

[saman_artorious]

My double is 00.0 format. when I set it to QLCDNumber .display(double)
it automatically removes the precisions and displays 0

02.0 -> as 2.0
0.0 -> 0
20.0 -> 20
and so on. How can I force it keep it's format?

Added after 9 minutes:


My double is 00.0 format. when I set it to QLCDNumber .display(double)
it automatically removes the precisions and displays 0

02.0 -> as 2.0
0.0 -> 0
20.0 -> 20
and so on. How can I force it keep it's format?

I did this:
QString str = QString::number(f, 'f', 1);

now, how can I padleft the float? so that when I enter 02.0 it shows it and not 2.0? does qt support it?

[Lesiok]

Read about QString::rightJustified. And for the future: read the documentation, it does not hurt.

[saman_artorious]

Read about QString::rightJustified. And for the future: read the documentation, it does not hurt.

result is not as expected. had to do this to get the expected result:


QString str = QString::number(f, 'f', 1);
if(str.length() == 3)
str.insert(0, '0');

[wysota]

QString(%1).arg(f, 5, 'f', 1, '0');

or similar. RightJustified() would also work.

[ChrisW67]

it automatically removes the precisions and displays 0
02.0 -> as 2.0

A leading zero has nothing to do with precision.