Some questions about abstract class with private, public and protected constructors

Question

My first question: What is the difference between an protected and a public constructor in an abstract class?

My second questions: Does it make sense, if the abstract cl

Answer 1

There doesn't seem to be much difference to me, the following code outputs

Foo
Bar

public abstract class Foo
{
    protected Foo() {
        Console.WriteLine ("Foo");
    }
}

public class Bar : Foo
{
    public Bar() {
        Console.WriteLine ("Bar");
    }
}

void Main()
{
    new Bar();
}

An abstract constructor can not be overriden if it's protected. Not sure If I answered your question :-)