How to convert a string representing decimal number in exponential form to float in Qt?

Question

I have some decimal numbers in a text file represented in exponential form Eg: 144.2e-3. I want to store the values in float. In qt it returns \"0\" when i directly use the

Answer 1

Use QString::toDouble.

Example:

bool ok;
float f = static_cast< float>( QString( "1234.56e-02" ).toDouble( &ok));