写一段qt/c++代码，实现函数指针，并在子线程运行

#include <QtConcurrent/QtConcurrent>
#include <QObject>
#include <QDebug>

class Worker : public QObject {
Q_OBJECT
public:
Worker() {}

public slots:
void doWork()
{
qDebug() << "Worker thread: " << QThread::currentThreadId();
}
};

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);

Worker worker;
QFuture<void> future = QtConcurrent::run(&worker, &Worker::doWork);
future.waitForFinished();

return a.exec();
}

// 输出结果：
// Worker thread: 0x7f8f3c001000