C++ templates with inheritance

Question

Templates confuse me with classes
You can do this:
template <int N>
class A {
protected:
int p_int = N;
};
Int \/ here
class B : A<5> {
public:
void print(){
std::cout << p_int << std::endl;
}
};
And no error. But template to a base class doesn’t.
template <int N>
class A {
protected:
int p_int = N;
};
template <int N> // template to base
class B : A<N> {
public:
void print(){
std::cout << p_int << std::endl;
}
};
And now an error?

Answer 1

You can find an explanation here:
https://isocpp.org/wiki/faq/templates#nondependent-name-lookup-members

Answer 2

ITDW
Please remove those 'c++++++++++' from tags ...