QLocale toCurrencyString() reverse

Borzh

I would like to know how to convert string with currency (i.e. obtained from QLocale().toCurrencyString(value)) back to double value.
Note that in some OS currency string is sometimes "$1,000.00" or can be "1.000,00 €". How do I convert it to double?

SGaist

Hi,

You can try with something like:

QString currencyString = locale.toCurrencyString(1000.55);
QString cleanedString = currencyString.remove(locale.currencySymbol()).trimmed();
qDebug() << locale.toDouble(cleanedString);

Hope it helps

alex_malyu

This post is deleted!

jsulm

@Borzh Do you really use floating point data types for financial calculations?!
Never do this, because floating point numbers are not exact.
Use integer types and sore the values as Cent: 1$ = 100Cent

Borzh

@SGaist said:

QString currencyString = locale.toCurrencyString(1000.55);
QString cleanedString = currencyString.remove(locale.currencySymbol()).trimmed();
qDebug() << locale.toDouble(cleanedString);

Thanks a lot, it works.

Borzh

@jsulm said:

@Borzh Do you really use floating point data types for financial calculations?!
Never do this, because floating point numbers are not exact.
Use integer types and sore the values as Cent: 1$ = 100Cent

I know, but the precision is not important here.

Solved QLocale toCurrencyString() reverse