error: conversion from 'double' to 'QChar' is ambiguous

Mohit Tripathi

Hi,

I am trying to put the double or float value but I am getting the error. How can I define this if values is not an integer?

QString data9 = ui->lineEdit10_14->text();
If(**data9<=0.8**||data9>=1.2)
{
     msg.setText("Range: Over should be 0.8 and 1.2\n");     
             msg.exec();
             return;  
         }

jsulm

@Mohit-Tripathi So, you're trying to compare a QString with double/float? How is this going to work?
Convert the string with number to double.
Isn't it really easy to find it in documentation? https://doc.qt.io/qt-5/qstring.html#toDouble

J.Hilk

Hi @Mohit-Tripathi

what you're trying to do here is comparing a QString with a double value, that can't work, those are fundamentally different.

You'll have to first convert the string to a double. The QString class offers a build in function for that:
https://doc.qt.io/qt-5/qstring.html#toDouble

you should use that first

Edit: snapped by @jsulm 😉