Problem overloading pre-increment operator (++)

[Maxeipi]

Hi
I'm not sure if this is a beginner's question...
I'm trying to create a Date class and override some operators.

class Date{
private:
	int _day, _month, _year;
....
public:
        Date& operator ++();
	Date operator ++(int);
.....
};
/*
 * Overloads the ++ postfix operator.
 * Increments the day by 1.
 */
Date Date::operator ++(int u){
	Date tmp=Date(*this);
	_day++;
	correct();
	return tmp;
}

/*
 * Overloads the ++ prefix operator.
 * Increments the day by 1.
 */
Date& Date::operator ++(){
	++_day;
	correct();
	return *this;
}

int main()
{
	int d1,m1,y1,d2,m2,y2;
	cin>>d1>>m1>>y1>>d2>>m2>>y2;
	Date first=Date(d1,m1,y1);
	Date second=Date(d2,m2,y2);
	first++.print();
	++first.print();
	second.print();
	return 0;
}

The third to last line in main() (line 38) throws an error:

error: no pre-increment operator for type

Just a side note, the correct() method simply fixes the date so that the day/month/year is correct (not too many days in a month, months in a year...).
Also you can assume that the copy constructor works properly (I tested it).
I'm not sure if it's relevant, but I'm using GCC version 4.4.3

[hanst99]

Shouldn't it be Date operator ++(&Date);?

[Maxeipi]

Not according to this:
http://www.parashift.com/c++-faq-lite/operator-overloading.html#faq-13.14

[hanst99]

Ah, you're right. Tried wrapping ++first in paranthesis? I think ++ has lower precedence than .

[Maxeipi]

That worked :D
Now why didn't I think about that...?
Thanks.