CS 105 (C++): quiz 12 requirements

CS 105: C++
Quiz 12 Requirements
C++: Chapter 9, 10

Class instances can be assigned to each other using the assignment operator. Know how to declare the assignment operator as a member function of a class. What argument(s) does it take? Be sure you know the precise syntax.
Constructors can take arguments. One such constructor is the copy constructor. Know how to declare a copy constructor for a class. What argument(s) does it take? What does it return? Be sure you know the precise syntax.
If TextBox is a class, the following statements might be used to declare and initialize instances of that class.

TextBox t1;
Textbox t2 = t1;

Does the initialization of t2 cause a call to TextBox's assignment operator, or its copy constructor? Why? (Note: The answer might not be what you expect, but it is covered in the recommended reading.)
In Chapter 10 of the C++ book, the static-array version of class Id does not need to define a destructor, assignment operator, or copy constructor. The dynamic-array version, however, needs to define all three of these. Why is that? (Note: The fact that if you need to define any one of these three for a class, you probably need to define all of them is often called "the Rule of Three". Learn this concept and this name for it.)