qt的小问题，高手help

caolingzi

----------------------------
#include <iostream>
#include <qapplication.h>
#include <qobject.h>

using namespace std;

class Student:public QObject{
        Q_OBJECT
public:
        Student(int);
        void emitSignal(int);
public slots:
        void setAge(int);
signals:
        void ageChanged(int);
private:
        int age;
};

Student::Student(int a)
{
        connect(this, SIGNAL(ageChanged(a)), SLOT(setAge(a)));
}
void Student::setAge(int a)
{
        age = a;
        cout << "Student age changed: " << a << endl;
}
void Student::emitSignal(int a)
{
        emit ageChanged(a);
}
int main()
{
        Student a(100);
        a.emitSignal(200);

}
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高手我写的QT的小程序，编不过，help..

cavendish

问题呢？