#includeThis example creates a QFile object to write to a file named "example.txt". The file is opened in WriteOnly mode with a Text mode flag to ensure proper encoding of text. The file is then written to using a QTextStream object, which allows for easy writing of formatted text data. Package/Library: Qt Framework#include int main() { QFile file("example.txt"); if (file.open(QIODevice::WriteOnly | QIODevice::Text)) { QTextStream stream(&file); stream << "Hello World!"; file.close(); } return 0; }