Loop mathematics

[davidrhcp]

I got a combo box representing values from 50-90 in a combo.

However the combo lists every value between those two numbers e.i. 50,51,52,53,54.....

How can i modify my code to have the box only show multiples of 5.

This is my code at the moment

for (int i = 50; i < 91; i++)
{
    ui->comboBox_Alert->addItem(QString::number(i) + "%");
}

[MuldeR]

I'd use a QSpinBox and setting the "singleStep" property accordingly.

But if you want a Combobox, you could just modify your code like:
@for (int i = 50; i <= 90; i += 5)
{
ui->comboBox_Alert->addItem(QString::number(i) + “%”);
}@

[davidrhcp]

i'm using a combo box but i'm sure that shouldn't change much.

I'm very beginner at this i would not know where to start implementing that command

[MuldeR]

[quote author="davidrhcp" date="1399296936"]i'm using a combo box but i'm sure that shouldn't change much.[/quote]

It does! The QSpinBox is made specifically for entering numbers. And it has a configurable “singleStep” property. Should be exactly what you need :-)

See here:
http://qt-project.org/doc/qt-4.8/qspinbox.html

[quote author="davidrhcp" date="1399296936"]I'm very beginner at this i would not know where to start implementing that command[/quote]

What command?

[davidrhcp]

thanks, was a great help :)