How to overload the << operator? - c++

Question

I am trying to build my own std::vector class but I am having trouble overloading the subscript ([]) and the cout << operators.
So far, I have tried to define the << operator as a public member of the class and then write the function's body outside the class declaration.
Right now I am getting terminal pages full of errors from iostream library and I do not even know where to begin looking through them.
I am a beginner in C++ and not accustomed to friend keyword or the template keyword. What am I doing wrong?
template<typename T>
class MyVector {
private:
T* Array;
public:
T& operator[](int b)
{
...
}
std::ostream& output(std::ostream& s) const;
};
std::ostream& operator<<(std::ostream& output, MyVector& A)
{
int i;
for(i = 0; i < A.GetDimension(); i++)
{
output << A[i] << " ";
}
output << "\n";
return output;
};

Answer 1

What you have is right, you just forgot the template declaration:
template <typename T>
std::ostream& operator<<(std::ostream& output, MyVector<T>& A)
{
int i;
for (i = 0; i < A.GetDimension(); i++)
{
output << A[i] << " ";
}
output << "\n";
return output;
};

Answer 2

template<typename T>
class MyVector{
...
std::ostream& printToStream(std::ostream& output) const {
int i;
for (i = 0; i < Dimension; i++) {
output << Array[i] << " ";
}
output << "\n";
return output;
}
...
};
template<typename T>
std::ostream& operator<<(std::ostream& output, const MyVector<T>& A) {
return A.printToStream(output);
}