Quick Help Needed with little App.

[Sicko]

I need to make something that converts from Celcious to:
Kelvin, Fahrenheit, Rankine, Réaumur, Newton, Rømer and Delisle.

Right now, I have the following:

void mainForm::convertClicked()
{
 double celsius_input, result = 0;
 
        celsius_input = celsiusLineEdit->text().toDouble();
 
        result = (celsius_input *  (9.0/5.0)) + 32.0;
 
       resultLineEdit->setText(QString::number(result, 'f', 1));
 
       celsiusLineEdit->clear();
}

void mainForm::convertClicked()
{
 double celsius_input, result = 0;
 
        celsius_input = celsiusLineEdit->text().toDouble();
 
        result = (celsius_input *  (9.0/5.0)) + 32.0;
 
       resultLineEdit->setText(QString::number(result, 'f', 1));
       
       celsiusLineEdit->clear();
}

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The problem is, all results have to come in that same resultLineEdit.
How do I do that?

Thanks.

[Sicko]

Please, this is urgent.. Anyone?

[wysota]

Please, this is urgent..

Never and I mean never say something is urgent if you want a fast reply

How do you want to display all values in the same lineedit? And why a line edit and not a QLabel?

Try this:

float cel=0, kel=273.15, fahr=32.0; // make those members of your form
 
void mainForm::convert(){ // a slot
  double input; // gather input here
  bool fromCelsius = celsiusLineEdit->text().isEmpty() ? false : true;
  // do the conversion
  if(fromCelsius){
    input = celsiusLineEdit->text().toDouble();
    cel = input; // from Celsius
  } else {
    input = kelvinLineEdit->text().toDouble();
    cel = input + 273.15; // from Kelvin
  }
  kel = 273.15+cel;
  fahr = (9.0/5.0)*cel+32;
  label->setText(QString("%1K, %2 deg. C, %3 deg. F").arg(kel).arg(cel).arg(fahr));
}

float cel=0, kel=273.15, fahr=32.0; // make those members of your form

void mainForm::convert(){ // a slot
  double input; // gather input here
  bool fromCelsius = celsiusLineEdit->text().isEmpty() ? false : true;
  // do the conversion
  if(fromCelsius){
    input = celsiusLineEdit->text().toDouble();
    cel = input; // from Celsius
  } else {
    input = kelvinLineEdit->text().toDouble();
    cel = input + 273.15; // from Kelvin
  }
  kel = 273.15+cel;
  fahr = (9.0/5.0)*cel+32;
  label->setText(QString("%1K, %2 deg. C, %3 deg. F").arg(kel).arg(cel).arg(fahr));
}

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[Sicko]

We have to use a textedit ...
Thanks (for the fast) reply tho

[wysota]

We have to use a textedit ...

Last time you said line edit... You can apply the answer the same way though.