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include <iostream>
#include "MainWindow.h"

int main(int argc, char **argv)
{
	bool gui = false;//здесь будет разбор параметров

	QApplication app(argc, argv);

	if (gui)
	{

		MainWindow window;
		window.show();

		return app.exec();
	}
	else
	{
		std::cout << "text";

		return 0;
	}
}

#include <iostream>
#include "MainWindow.h"

int main(int argc, char **argv)
{
	bool gui = false;

	if (gui)
	{
		QApplication app(argc, argv);

		MainWindow window;
		window.show();

		return app.exec();
	}
	else
	{
		QCoreApplication app(argc, argv);
		std::cout << "text";

		return 0;
	}
}

  ::AllocConsole();
  freopen("CONOUT$", "wt", stdout);
  freopen("CONIN$", "rt", stdin);

int main(int argc, char *argv[])
{
	QCoreApplication a( argc, argv );
	std::cout << "console application" << std::endl;
	return a.exec();
}

int main(int argc, char **argv) 
{ 
	QApplication app(argc, argv); 
	MainWindow window; 
	window.show(); 

	return app.exec(); 
}

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	TestTextEdit w;
	w.show();
	a.connect(&a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()));

	std::cout << "console application" << std::endl;

	return a.exec();
}