QSettings settings("MyCompany", "MyApp"); settings.writeEntry("myString", "Hello World!");
QSettings settings("MyCompany", "MyApp"); int myValue = 42; settings.writeEntry("myInt", myValue);In this example, we create a `QSettings` object with a company and app name. We then create an integer value and set the key `"myInt"` to that value using `writeEntry`. The Qt package library provides a range of utility classes and templates for C++ developers. `QSettings` is one of these classes and simplifies the task of managing an application's configuration data.