给大家出个Qt面试题~
请指出下面Qt代码是否存在问题?#include <QtGui/QApplication>#include <QtGui/QLabel>#include <QtGui/QWidget>int main(int argc, char* argv[]){ QApplication hwApp(argc, argv); QLabel hwLabel("Hello world"); QWidget window; hwLabel.setParent(&window); window.show(); return hwApp.exec();}答案在此