#includeIn this example, we create a byte array with the text "Hello World!" and print it using qDebug. After that, we clear the contents of the byte array using clear() function and print the byte array again. The output will be an empty byte array since we have cleared its contents. Package library: QtCore library.#include int main() { QByteArray byteArray = "Hello World!"; qDebug() << "Before clear:" << byteArray; byteArray.clear(); qDebug() << "After clear:" << byteArray; return 0; }