CMSC 202 — Spring 2016 — Prof. Marron

Midterm 2 Review Guide

Classes

• Syntax for defining a class; instantiating and using class objects
• Data members and function members
• private vs. public
• Accessors, mutators, facilitators; purpose of each and how to implement
• Constructors:
• What is the purpose of a constructor?
• Default vs. non-default constructors
• Initialization lists for constructors
• Copy constructors:
• When is a copy constructor needed?
• Deep vs. shallow copies
• Copy constructor syntax
• Destructors:
• When is a destructor needed?
• Destructor syntax
• Use of const
• With function parameters
• With member functions
• With function return values

Operator Overloading

• Basic operator overloading:
• Overloading operator+ as member or non-member
• Overloading other basic operators (+, -, ==, unary -) as member or non-member
• When should an operator return a const value?
• Use of friend
• Overloading operator<< and operator>> as friend or non-friend
• Overloading the assignment operator (operator=):
• When should operator= be overloaded?
• Relationship to copy constructors
• Syntax, including protection from self copy, returning *this

Pointers, Dynamic Memory, and Linked Lists

• Basic pointer syntax:
• How to declare a pointer
• How to get the address of a variable
• Using pointers to simulate call-by-reference
• Pointer arithmetic
• Dereference and "address of" operators
• Use of new & delete
• Dynamic arrays and delete []
• Pointers to objects:
• Use of ->
• The this pointer
• Copy constructors, desdtructors, and overloading operator=
• Linked Lists:
• Conceptual structure of a linked list
• The Node and List classes
• Dummy nodes
• Inserting and deleting items in a list
• Searching a list
• Destructors for linked lists

Basic Inheritance

• "is a" vs. "has a" relationship
• Base and derived classes
• What is inherited by the derived class? Use of public, private, and protected
• Syntax to define a derived class
• Constructors, destructors, and operator= in derived classes