<prompt> Kutumia QT katika C , kuandika interface GUI kuonyesha vifungo viwili, UP na DOWN na eneo la maandishi kati.  <response>: Heres a code snippet that shows how to create a simple interface displaying the UP and DOWN buttons with a text area in between using Qt in C:include include include include include int mainint argc, char argv QApplication appargc, argv; QWidget window; window.setWindowTitleUp Down Buttons; Create buttons QPushButton upButton new QPushButtonUP; QPushButton downButton new QPushButtonDOWN; Create text area QTextEdit textArea new QTextEdit; Add buttons and text area to a vertical layout QVBoxLayout layout new QVBoxLayout; layout-addWidgetupButton; layout-addWidgettextArea; layout-addWidgetdownButton; Set widget layout window.setLayoutlayout; window.show; return app.exec;This code creates a QPushButton for the UP button and another one for the DOWN button, as well as a QTextEdit for the text area. It then adds these widgets to a vertical layout using QVBoxLayout, and sets this layout as the widgets layout using setLayout. Finally, it shows the widget and starts the Qt event loop using show and app.exec respectively. 