When programming with Qt Creator, it is inevitable to use it to convert float type into QString type. Here are all my methods:

1. It is very simple to convert QString type to float type.

QString data;

float num = data . to float()；

This is easy to achieve.

2. But how do you convert a float type into a QString type?

It is difficult to find the encapsulated conversion function by looking at the API.

You can try the following transcoding:

Floating point number =1.222;

QString data = QString("float is% 1 "). arg(num)；

The output result is: float is 1.222.

If only float is converted to a numerical value, use the following:

QString data = QString("% 1 ")。 arg(num)；