CSC 1061 OOP and ADTs Week 02 Quiz

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Questions and Answers

What is the primary purpose of using abstraction in problem-solving?

To create a visual representation of data

To ensure all data is accessible to the user

To increase the complexity of the class design

To simplify complex systems by highlighting only essential details (correct)

Which member function type is NOT typically used in class design?

Public constructor functions (correct)

Default argument functions

Constant member functions

Modification member functions

What is the primary purpose of a class in object-oriented programming?

To handle user interface design

To create multiple instances of a program

To serve as a blueprint for objects (correct)

To manage memory allocation

What is the role of macro/include guards in a class header file?

To prevent multiple inclusions of the same header file Signup and view all the answers

What does an Abstract Data Type (ADT) represent in object-oriented programming?

A class that encapsulates data and behavior Signup and view all the answers

Which of the following best describes encapsulation in OOP?

It allows data members to be private within a class Signup and view all the answers

What is the role of the header files in C++?

To declare function prototypes and types used in a program Signup and view all the answers

Which of the following is a characteristic of a class in OOP?

It serves as a blueprint for creating objects Signup and view all the answers

Which aspect of a class defines its characteristics?

Data members Signup and view all the answers

What should be avoided when including files in C++?

Using #include on the CPP files directly Signup and view all the answers

What is the purpose of an include guard in header files?

To prevent multiple declarations of a header Signup and view all the answers

Which of the following statements accurately describes a class in C++?

A class is an abstract data type that can create objects Signup and view all the answers

In the build process of a multi-file program, what is the role of the linker?

To link all object files and create the executable file Signup and view all the answers

How is a programmer-defined header file included in a C++ program?

#include "programmerHeader.h" Signup and view all the answers

What does encapsulation in a class ensure?

Data members of a class are hidden from the user Signup and view all the answers

What is the initial step in creating a multi-file program?

The preprocessor includes all necessary header files Signup and view all the answers

Which command is typically used as the compiler command in a makefile for C++?

g++ Signup and view all the answers

What must a makefile do to ensure all source files compile correctly?

Ensure that header files are included before source files Signup and view all the answers

What is the primary purpose of encapsulation in a class?

To ensure private data cannot be altered directly from outside the class. Signup and view all the answers

Which of the following statements is true about constructors?

A default constructor does not require parameters. Signup and view all the answers

Which two characteristics distinguish a function as a constructor of a class?

It has no return type and its name matches the class name. Signup and view all the answers

What is the role of getter and setter functions in encapsulation?

They retrieve and update private data members in a controlled manner. Signup and view all the answers

What happens when an object of a class is created with a parameterized constructor?

The constructor is invoked once to initialize the object with the given parameters. Signup and view all the answers

Which of the following best describes member functions?

They can be private, public, or protected and manipulate class data. Signup and view all the answers

How can constructors be differentiated based on their definitions?

By the number of parameters they take and their visibility level. Signup and view all the answers

What type of member function is specifically designed to change the value of a data member?

Setter Signup and view all the answers

Study Notes

Course Information

Course code: CSC 1061
Topic: Object-Oriented Programming (OOP) and Abstract Data Types (ADTs)

Objectives

Understand abstraction and its role in problem-solving
Design new classes using information hiding with private member variables, constant member functions, and modifying member functions
Write header and implementation files for new classes
Create objects from new classes
Identify situations where member functions and constructors can benefit from default arguments and constructor initializers

Agenda (Week 02)

Jeopardy Semester Assignment
Abstract Data Types (ADTs) and OOP
Classes, Objects, this, and static
Macros/Include Guards
Building/Making a Project
Demo: Date Class
To-Do List
Resources for Help

Semester Assignment Details

Resource file: "categories.csv"
ADT: Abstract Data Type
Data Structures/Container Classes
- Contestants (Bag of Players)
- Category Filenames (Dynamic List Template)
- Category of Questions (Linked List Template)
- Board (Binary Tree Template)
Player
Question
Record (inherited class of std::string)

Object-Oriented Programming (OOP)

A class is a custom data type or ADT
A class encapsulates data and functionality
Data is kept private
Public functions apply to data

OOP - Abstract Data Types (ADTs)

Built-in simple data types in C++ (int, float, double, char, bool)
Standard library classes (e.g., std::string)
User-defined types (ADTs) are created using classes

Classes and Objects

A class is a blueprint for an object
A class defines the structure and behavior of an object
Creating a class does not allocate memory
Objects are created from classes
Objects have memory and values

OOP in C++

Defining Classes: (Specific focus on topics like 1.12.1. Fraction Class, 1.12.2. Abstraction, and Encapsulation)

Header Files and Source Files

Header files: Contain declarations (function prototypes) and are not compiled
Source files: Contain implementations (definitions) and are compiled
#include directives are used to include header files
Never #include a .cpp file within a .h file
Only #include necessary system headers or programmer defined headers
Include guards prevent multiple inclusions of the same header

Macro (Include) Guard

Identifiers help prevent re-declaration of symbols in header files.

Build (Make) a Multi-File Program

Preprocessor: Replaces #include with header file contents
Compiler: Compiles source code into object files
Linker: Links object files to create an executable

Makefile (Project File)

Update for multi-file projects to compile correctly after updating header and source files. Use existing templates in case of codeHS projects.

Review - Classes and Objects

Classes are ADTs (abstract data types) with data members and member functions
A class defines a type
Objects are instances of classes

Data Members (Encapsulation)

A class contains data members
Encapsulation hides data, making the data private within the class, thus avoiding direct access from outside the class.
Public functions (getters and setters) enable access and modification, promoting code structure and maintenance.

Constructors

Allow creating and initializing objects
All classes should have a default constructor
Default constructors do not take any parameters

Constructors (Multiple Options)

Constructors cannot be explicitly called as regular member functions
Execute only once when a new object is created
Can be overloaded to have different parameter counts or types

Class Member Functions

Functions belonging to a class that operate on class data members
Access functions (getters) return data members
Modifier functions (setters) change data members
Other functions perform tasks on data members

PythonTutor Demo: Date Class

Visualize and run the date class demo
Review and label the parts of the code: Class declaration, constructors, member functions, data members, class definition, main driver, objects, member function calls

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Description

This quiz explores key concepts of Object-Oriented Programming (OOP) and Abstract Data Types (ADTs) covered in week 02 of CSC 1061. Students will demonstrate their understanding of class design, abstraction, member functions, and constructors as part of their semester assignment. Test your skills on these foundational topics in programming!