Difficulty in making a window

[rezas1000]

Hello
The following code will not run? Why?
Please correct.
thanks.

#ifndef E_H
#define E_H
#include <QWidget>
#include <QPaintEvent>
class window:public QWidget
{public:
window(QWidget* parent=0);

};
#endif // E_H


#include <QtWidgets>
#include "window.h"
window::window(QWidget *parent): QWidget(parent)
{
resize(200, 200);
setWindowTitle("Window");
}


#include <QWidget>
#include "window.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
window win;
win.show();
return app.exec();
}


QT=widgets
SOURCES += \
main.cpp \
window.cpp

HEADERS += \
window.h

10603

[anda_skoa]

Missing include for QApplication.

Cheers,
_