QString to Double conversion problem

Raagini

I'm a new bie in qt. I have a problem while converting a string value to double. My string value is

@QString str = 100.94519;
double value = str.toDouble();
@

My Output while converting it to double is 100.95.
The problem is the double value is converting to 2 decimals. But i want the same string value to be converted as a double value. How can i convert a string value to a double value?

maisoui

Hi,

You should have a look to "QString documentation":http://qt-project.org/doc/qt-4.8/qstring.html#number-2 and use the method QString::number.

Regards,
Jonathan

sierdzio

[quote author="maisoui" date="1379937149"]Hi,

You should have a look to "QString documentation":http://qt-project.org/doc/qt-4.8/qstring.html#number-2 and use the method QString::number.

Regards,
Jonathan
[/quote]

While you should read the post thoroughly :P The OP is asking for a conversion from QString to double, not the other way around.

sierdzio

Raagini try with QLocale::toDouble().

maisoui

Are you sure the value in your string is correct? That's why I talked about QString::number.

For me this line is not correct : QString str = 100.94519; (Which version of Qt do you use?)

Regards

sierdzio

Ah right, maisoui my bad, apologies.

However, I suspect this is just a quick example and the actual code in Raagini's project is different.