template class default constructor problem

I get an error:

Quote:

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request for member `setPairX' in `anotherPoint', which is of non-class type `Pair<float, int> ()()'

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which I really do not understand... I only suspect there is something wrong with the default constructor, but I have no clue what.
I have my template in .h file (all declarations and definitions). The part I'm concerned is as follows:

Code:

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template< class T1, class T2 >
class Pair {
          public:
                Pair();
                Pair(const T1 &x, const T2 &y) : first(x), second(y) {}
            // ~Pair();
                void setPairX(const T1 &x);
                void setPairY(const T2 &y);
                T1 getPairX() const { return first; }  //inline def
                T2 getPairY() const { return second; } // inline def
            // void swapPair();
          private:
                  T1 first;
                  T2 second;
};

//definitions for the template
template< class T1, class T2 >
Pair< T1, T2 >::Pair()
{
      first = 0;
      second = 0;
}


template< class T1, class T2 >
void Pair< T1, T2 >::setPairX(const T1 &x)
{
    first = x;
   
}

template< class T1, class T2 >
void Pair< T1, T2 >::setPairY(const T2 &y)
{
    second = y;
   
}

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If I call parametrized constructor, everything works fine. But when I call the default one, I get the compiler error I quoted.
That's how I call the default constructor in main:

Code:

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    Pair <float, int> anotherPoint();
    anotherPoint.setPairX(1.05);
    cout << anotherPoint.getPairX() << " is first in anotherPoint." << endl;
    anotherPoint.setPairY(4);
    cout << anotherPoint.getPairY() << " is second in anotherPoint." << endl;

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Can you tell me what I'm doing wrong?

Also: maybe a stupid question. Do I need to define the destructor? If yes, how?

Quote:

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Can you tell me what I'm doing wrong?

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You declared a function here:

Pair <float, int> anotherPoint();

caled anotherPoint, which returns a Pair<> and has no parameters. Then you tried to access the function's member variable here:

anotherPoint.setPairX(1.05);

and functions don't have member variables because they aren't classes. So the error message says:

Quote:

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request for member `setPairX' in `anotherPoint',

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where

Quote:

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[anotherPoint] is of non-class type `Pair<float, int> ()()'

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The syntax informs you that anotherPoint is a function: the rightmost (), that returns a Pair<> and takes no parameters: the other ().

Quote:

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But when I call the default one

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Crack open your beginning C++ text and examine the syntax for calling the default constructor of a class.

It is a common mistake to add parenthesis when declaring a variable, but that isn't allowed (it declares a function, as 7stud said). So remove the parentheses from the anotherPoint variable declaration.

Oh....... Thanks Daved. I knew it is something so trivial...