CSC 1061 OOP and ADTs Overview

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Questions and Answers

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

To expose detailed implementation to users.

To create additional complexity in code.

To ensure all class variables are public.

To simplify the representation of complex systems. (correct)

Which of the following is NOT typically a feature of a well-designed class in OOP?

Private member variables.

Modification member functions.

Publicly accessible data. (correct)

Constant member functions.

What type of data structure is a BinaryTree categorized under in the context of OOP?

Dynamic list template.

Linked list template.

Abstract data type.

Container class. (correct)

Why are default arguments useful in constructors and member functions?

They eliminate the need for overloaded functions. Signup and view all the answers

What does the 'this' keyword typically refer to in a class context?

The current object instance. Signup and view all the answers

What is an Abstract Data Type (ADT)?

A type created by the developer that contains data and methods Signup and view all the answers

Which of the following statements about classes and objects is true?

An object is created based on the specifications given by a class Signup and view all the answers

What do header files contain?

Declarations and function prototypes Signup and view all the answers

What is a characteristic of encapsulation in Object-Oriented Programming?

It restricts access to certain components of an object Signup and view all the answers

Which statement is correct regarding the relationship between header files and source files?

Header files are included at the beginning and provide declarations Signup and view all the answers

What is the purpose of an Include Guard in header files?

To ensure that declarations are not doubly declared. Signup and view all the answers

In which step of building a multi-file program does the compiler check syntax?

Compiler step Signup and view all the answers

What file type must be updated in a makefile to ensure proper compilation of a multi-file project?

.h files Signup and view all the answers

Which statement regarding classes and objects is correct?

An object is an instantiation of a class. Signup and view all the answers

What does encapsulation in a class ensure?

Sensitive data is hidden from the user. Signup and view all the answers

What is a programmer-defined header file typically named with?

.h Signup and view all the answers

What happens in the preprocessor stage when using #include?

It replaces #include with the content of the specified file. Signup and view all the answers

Which of the following statements about classes is true?

A class is a blueprint for creating objects. Signup and view all the answers

What is true about private data members in a class?

They can only be accessed through public member functions. Signup and view all the answers

What distinguishes a constructor from a regular function?

Constructors have the same name as the class, while regular functions do not. Signup and view all the answers

How can a constructor be overloaded?

By having different numbers or types of parameters. Signup and view all the answers

Which of the following refers to a function that modifies a class's data member?

Mutator function Signup and view all the answers

What is the role of a default constructor?

To create an object with default values. Signup and view all the answers

Which statement is correct regarding member functions?

They are functions that can manipulate the class's data members. Signup and view all the answers

What happens when a new object of a class is declared?

Any constructor associated with the class is executed. Signup and view all the answers

Which of the following is NOT a type of member function?

Operator functions 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 modification member functions.
Write header files and separate implementation files for classes.
Create objects from classes in test programs.
Identify situations where member functions and constructors benefit from default arguments and constructor initializers.

Agenda (Week 2)

Jeopardy Semester Assignment
ADTs and OOP
Classes, Objects, *this, and static
Macro/Include Guards
Build/Make Project
Demo: Date Class
TODO list
Resources for Help

Semester Assignment

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

Object-Oriented Programming (OOP)

A class represents a custom data type or ADT.
A class encapsulates data and functionality around a central idea, making it reusable.
Data is kept private.
Public functions operate on the private data.

ADTs (Abstract Data Types)

Built-in simple data types in C++: int, float, double, char, bool
Standard Library Classes: std::string
User-defined types (ADTs): Classes

Classes and Objects

A class is a blueprint for an object.
A class defines the structure and behavior of objects.
When the class is used to create an object, memory is allocated.

Header Files and Source Files

Header files (.h) contain declarations (function prototypes).
Source files (.cpp) contain definitions (implementations of functions).
#include directives are used to include headers.
Use include guards (#ifndef, #define, #endif) to prevent multiple inclusion of header files.
Avoid #include "fileName.cpp"

Header Files: #include

System header files (e.g., <iostream>, <string>) are pre-built libraries.
Programmer-defined header files (.h) contain the declarations.

Macro (Include) Guard

Unique identifier at the top of header files to prevent multiple declarations/definitions.

Build (Make)

Preprocessor handles #include directives.
Compiler compiles source code to object code.
Linker combines object files to create an executable file.

Makefile

Project file used in compiler tools like CodeHS.
Must be updated to include all dependencies.

Review of Class and Objects

Classes are abstract data types (ADTs).
Classes have data members (fields) and member functions (methods).
class Car{}; defines a class.
Car uberCar; instantiates an object.
Data should be private.

Data Members (Encapsulation)

Classes encapsulate data within private members.
Accessing private data requires public member functions (getters and setters).

Constructors

Used to create and initialize objects.
Default constructors do not take any arguments.

Constructors (Many Options)

Can be overloaded with different versions (different number or types of parameters).
Not called directly, but executed when an object is created.

Class Member Functions

Member functions perform tasks using data members in a class.
Access functions (getters) return data values.
Modifier functions (setters) modify data values.

PythonTutor Demo: Date Class

Code visualization tool (e.g., PythonTutor).
Review the code for class declaration, definitions, constructors, member functions, data members, main driver(s), objects and member function calls.

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Description

This quiz covers the fundamental concepts of Object-Oriented Programming (OOP) and Abstract Data Types (ADTs) as discussed in CSC 1061. Topics include designing classes, understanding abstraction, and implementing member functions. Get ready to test your knowledge on OOP concepts and best practices in programming.