阅读以下代码，下面哪一项是正确的？

1void processData() {2   stack<int> s;3   queue<int> q;4   for (int i = 1; i <= 5; ++i) {5      s.push(i);6      q.push(i);7   }8   while (!s.empty()) {9      cout << "Stack pop: " << s.top() << endl;10      s.pop();11   }12   while (!q.empty()) {13      cout << "Queue pop: " << q.front() << endl;14      q.pop();15   }16}