Unresolved External Errors with Template Class .cpp Inclusion

Question

first question ever, here goes:

I've got a template class split into header and source file. At the bottom of the header file I'm including the source file and I'm using #ifndef/#define/#endif guards on the source file now. Many folks suggest to others that I should use inline to define my functions; this is a homework assignment and is not permitted.I have also read answers that indicate I should not use .cpp source files and instead use something like .tcc/.tcp so that the IDE knows they are template source files but this didn't work either.

I actually got this to work by including the source file rather than the header in my main file but I know this isn't what I'm supposed to be doing.

Articles on this site that I've read trying to solve the problem include:

Including .cpp file in the header file for a template class What is the correct file extension for a C++ template implementation file? Splitting templated C++ classes into .hpp/.cpp files--is it possible? C++ Unresolved external symbol with Class templates Why do I get "unresolved external symbol" errors when using templates?

This seems like a no-brainer problem and has been solved a hundred times, so why won't my code do it's thing? Thanks for your help gang, my code is posted below.

Header file:

    //This file contains the declarations and signatures for Array class
//members and functions. The class is used to manage memory

#ifndef ARRAY_HPP
#define ARRAY_HPP
#include "Point.hpp"                                            //the array is of points and needs the Point.hpp file

namespace DanWhite
{
    namespace Containers
    {
        template <class T> class Array
        {
        private:
            T* pointarray;  //the dynamic array itself
            int size;   //the size of the array

        public:
            Array();    //creates a dynamic array of 10 points
            Array(int arraysize);   //creates a dynamic array of <arraysize> points
            Array(const Array<T> &AnotherArray);    //creates a dynamic array exactly the same as another

            ~Array();   //destructor

            int Size() const;   //returns the size of the array
            void SetElement(int element,
                const T& point);    //sets a specific element in the array
            T GetElement(int element) const;    //returns a specific element in the array

            Array<T>& operator=(const Array<T>& source);    //sets the points of an array equal to another
            const T& operator[](int element) const; //allows reading an element in an array
            T& operator[](int element); //allows writing to an element in an array
        };
    }
}

#ifndef ARRAY_CPP
#define ARRAY_CPP
#include "Array.cpp"
#endif

#endif

Source File

    //this source file implements all of the functions and operators in the
//Array class header file

#ifndef ARRAY_CPP
#define ARRAY_CPP

#include "Point.hpp"
#include "OOBE.hpp"
#include "Array.hpp"
#include <sstream>

using namespace DanWhite::Containers;

template <class T>
Array<T>::Array() : size(10)                                        //default constructor
{
    std::cout << "Array default constructed" 
        << std::endl;
    pointarray = new T[10];
}

template <class T>
Array<T>::Array(int arraysize)                                  //specific constructor with size
{
    std::cout << "Array specific constructed" 
        << std::endl;
    size = arraysize;
    pointarray = new T[size];
}

template <class T>
Array<T>::Array(const Array<T>& anotherarray)                       //copy constructor
{
    std::cout << "Array<T> copy constructed" 
        << std::endl;

    size = anotherarray.size;

    pointarray = new T[size];

    for (int i = 0; i < anotherarray.size; i++)
    {
        pointarray[i] =  anotherarray.pointarray[i];
    }
}

template <class T>
Array<T>::~Array()                                              //destructor
{
    std::cout << "Array destructed" << std::endl;
    delete [] pointarray;
}

template <class T>
int Array<T>::Size() const                                      //returns the size of the array object
{
    return size;
}

template <class T>
void Array<T>::SetElement(int element,                          //changes an element of an array object
    const T& t)
{
    if (element > (size-1) || element < 0)
    {
        throw OOBE(element);
    }
    pointarray[element] = t;
}

template <class T>
T 
    Array<T>::GetElement(int element) const                 //returns an element of an array object
{
    if (element > (size-1) || element < 0)
    {
        throw OOBE(element);
    }
    return pointarray[element];
}

template <class T>
Array<T> & Array<T>::operator=(const Array<T> & source)             //assigns the values of one array object
                                                            //to another array object
{
    if (this == &source)
    {
        return *this;
    }

    for (int i = 0; i < source.Size(); i++)
    {
        pointarray[i] = source.pointarray[i];
    }

    return *this;
}

template <class T>
const T 
    & Array<T>::operator[](int element) const                   //returns an element of an array
{ 
    if (element > (size - 1) || element < 0)
    {
        throw OOBE(element);
    }

    else 
    {
        return pointarray[element];
    }
}

template <class T>
T & Array<T>::operator[](int element)       //allows changing an element of an array
{
    if (element > (size - 1) || element < 0)
    {
        throw OOBE(element);
    }

    else
    {
        return pointarray[element];
    }
}


#endif

Thanks again for the help. After days trying to solve this and reading articles, I'll be pretty excited to put this behind me.