Overloading operations

[Shaikh Omar]

I've run into a slight problem with this bit of code I'm writing.

   cout << "\nTest " << test++ << ": Subscripting\n" << endl;

   const Vector3 v5(3.2, -5.4, 5.6);
   Vector3 v6(1.3, 2.4, -3.1);

   cout << "v5: " << v5 << endl;
   cout << "v6: " << v6 << endl;

   cout << "v5[0] = " << v5[0] << endl;
   cout << "v5[1] = " << v5[1] << endl;
   cout << "v5[2] = " << v5[2] << endl;

Vector3::Vector3(float x, float y, float z)
	{
	vectorArray[0] = x;
	vectorArray[1] = y;
	vectorArray[2] = z;
	}
	
float& Vector3::operator[](int i)
	{
	return vectorArray[i];
	}

When I try and compile my program. It keeps saying float Vector3::operator[](int) <near match> as my error. Is there anyway I can fix this in the operation it self other than going to the base code I'm suppose to use and remove const in this line const Vector3 v5(3.2, -5.4, 5.6);

[TheBeardedQuack]

Well for a start where on earth is "vectorArray" coming from, there's no declaration for this variable so you cannot return it.
Also I would recommend adding a couple of if statements to make sure you don't access an out of bounds element (once you've declared the element in the first place).

[vlad from moscow]

What does mean this text "float Vector3::operator[](int) <near match>"?! Could you be less stupid and show us the full error message?!

As for the problem operator [] defined in the class can be called only for non-const objects of the class. That to call the operator [] for const objects it should be overloaded in the class for example the following way

float Vector3::operator[](int i) const
{
   return vectorArray[i];
}