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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include <QtCore>
++ #include <iostream>
++ using namespace std;
++
++ int main(int argc, char *argv[])
++ {
++ //! [0]
++ QStack<int> stack;
++ stack.push(1);
++ stack.push(2);
++ stack.push(3);
++ while (!stack.isEmpty())
++ cout << stack.pop() << Qt::endl;
++ //! [0]
++ }