constructor problem

[WesleySnipes]

This is probably a dumb mistake but I am making a vector class to take negative indices. I am having a problem when implementing the constructors. Here is my header

#ifndef _LBVECTOR_H
#define _LBVECTOR_H

#include <cstdlib>
#include <cassert>
#include <iostream>

template <class Item> class lbvector
{
public:

   // default constructor 0 elements
   // postcondition: vector of zero items constructed
   lbvector( )
   {
      myCapacity = 0;
      myList = 0;
      myUpper = 0;
      myLower = 0;

   }

   // specify size of vector
   // postcondition: vector of size items constructed
   lbvector(int size)
   {
      assert(size >= 0);
      myCapacity = size;
      myList = new Item [size];
      assert(myList != 0);
   }

      int capacity( ) const
   {
      return myCapacity;
   }
private:
   Item * myList;  // the array of items
   int myCapacity; // # things in vector (array), 0,1,...,(myCapacity-1)
   int myUpper; // highest legal index
   int myLower; //lowest legal index


   // aborts with appropriate message if index is not in appropriate range
   // use std:: to access names in std namespace
   void checkIndex (int index) const
   {
      if (index < 0 || myCapacity <= index) {
         std::cerr << "Illegal vector index: " << index
                   << " (max = " << myCapacity-1 << ")"
                   << std::endl;
         assert(index >= 0);
         assert(index < myCapacity);
      }
   }
};

and here my driver

#include <iostream>
#include "lbvector.h"

using namespace std;

int main()
{

    lbvector<int> example();
    cout << "Hello world!" << endl;
    cout << example.capacity();

    return 0;
}

So, here is my problem: When I use an int in the constructor (i.e. 5) it will work and print out 5. BUT, when I use an empty constructor like shown above, it doesn't work and I get the error message

error: request for member 'capacity' in 'example', which is of non-class type 'lbvector<int>() 

What am I doing wrong? Thanks.

[vlad from moscow]

This

lbvector<int> example();

is a declaration of a function that has return type lbvector<int> and has no parameters.

You should write

lbvector<int> example;

[WesleySnipes]

Ahhhhh! Thanks. I knew it was something dumb...