Template Header/Source

main.cpp

//http://www.codeproject.com/Articles/48575/How-to-define-a-template-class-in-a-h-file-and-imp

#include <iostream>
#include <vector>
#include "Test.h"
#include "Test.cpp"

int main()
{
    int n;
    std::cout << "Input Number: ";
    std::cin >> n;

    Test<int> test(n);
    std::cout << "Value: " << test << std::endl;
    return 0;
}

test.cpp

#include "Test.h"

template<class T>
Test<T>::Test(T val)
{
    this->val = val;
}

template<class T>
const T & Test<T>::operator=(T val)
{
    return this->val = val;
}

template<class T>
Test<T>::operator const T & ()
{
    return this->val;
}

test.h

#ifndef TEST_H
#define TEST_H

template<class T>
class Test
{
private:
    T val;
public:
    Test(T val);
    const T & operator=(const T val);
    operator const T & ();
};

#endif //TEST_H