#include#include using namespace std; int main() { QString str = "Hello World"; cout << "The length of the string is: " << str.length() << endl; return 0; }
#includeThis code defines a `QString` object `str` with the value "This is a test string". The `length` function is called on the `str` object and its value is printed using `qDebug()` for debugging purposes. The package library for `QString` is part of the Qt library, which is a cross-platform development framework used for building applications with graphical user interfaces (GUIs).#include int main() { QString str = "This is a test string"; qDebug() << "The length of the string is: " << str.length(); return 0; }