c and object oriented programming

... thinking cap using a  data type called a  data type called a  class class.. class thinking_cap  {  (8)Thinking Cap Implementation The class will have  The class will have  two components called  ... (10)Thinking Cap Implementation In a class, the  In a class, the  functions which  functions which  manipulate the class  manipulate the class  are also listed are also listed class thinking_cap  ... The plan is to describe  The plan is to describe  a thinking cap by  a thinking cap by  telling you what  telling you what  actions can be done to  actions can be done to  it (3)Using the Object’s Slots

Ngày tải lên: 01/04/2021, 19:25

... 6The Software LifecycleMaintain Trang 8New ParadigmComputer system consists of a set of objects.Objects are responsible for knowing and doing certain things Objects collaborate to carry out their ... by classes, inheritance hierarchies and subsystems Trang 9What is an object, anyway?Mystical view Computing systems are made up of objects that communicate only by sending messages between each ... All computation is message sending Trang 10What is an object, anyway?Trang 11What is an object, anyway?Programming language view An object-oriented system is characterized by • data abstraction

Ngày tải lên: 24/10/2014, 00:42

... Controls.Add(textBox); Control checkBox = factory.CreateCheckBox(); checkBox.Location = new Point (10, 50); Controls.Add(checkBox); Trang 37We can now create concrete types for this Interface Code Listing ... Abstract Factory What if there are no closely related objects, like TextBox, CheckBox, Button, etc.? Having an Abstract Factory to create a single object (which may contain other objects, of course), ... textBox.Location = new Point (10, 10); container.Controls.Add(textBox); Control checkBox = factory.CreateCheckBox(); checkBox.Location = new Point (10, 50); container.Controls.Add(checkBox);

Ngày tải lên: 05/12/2016, 12:48

... contained on one chip in GHz (gigahertz, billions of clock cycles per second) or, in older computers, in MHz (megahertz, millions of cycles) • A CPU instruction takes one or several clock cycles ... represent a character) • ASCII (American Standard Code for Information Interchange) is a subset comprising the first 128 codes of Unicode: • The first 32 codes are control codes (Carriage Return, ... Processing Unit) is made of millions of semiconductor devices, called transistors, etched into a silicon chip. • Transistors are combined to form logical devices called gates. • All digital electronics

Ngày tải lên: 04/11/2020, 23:13

... to other objects, and create new objects • An object belongs to a particular class, and the functionality of each object is determined by its class • A programmer creates an OOP application by ... motion” and helps find logical mistakes (“bugs”) Trang 9Compil erObject code le program Edito r Source code Compil er Object code Edito r Source code Compil er Object code  Trang 10Interpreted ... object may have its own “memory,” which may contain other objects • An object has a set of methods that can process messages of certain types Trang 27OOP (cont’d) • A method can change the object’s

Ngày tải lên: 04/11/2020, 23:13

... inheritance in OOP Trang 3 OOP e An OO program models the application as a world of interacting objects e An object can create other objects e An object can call another object’s (and Its own) ... Location Help Trang 6 Classes and Objects ° A class IS a plece of the program’s source code that describes a particular type of objects OO programmers write class definitions e An object is called ... characters, strings, other objects Procedures for constructing ° Constructors a new object of this class and initializing its fields Actions that an object se Methods of this class can take \ (behaviors)

Ngày tải lên: 04/11/2020, 23:13

... an Example Procedure: Climb steps Base case: if no steps to climb stop Recursive case: more steps to climb 1 Step up one step 2 Climb steps Trang 17Recursive Methods Trang 18Recursion: How ... addSquares (0) 3 2 0 1 0 1 5 14 Base case Trang 19Recursion (cont’d) Recursion is especially useful for dealing with nested structures or branching processes Trang 20 count count + the number of bytes ... Trang 1and Data StructuresMaria Litvin ● Gary Litvin 2nd AP edition with GridWorld Trang 2Objectives: Trang 3Define Algorithm abstract step-by-step recipe that describes how to perform a certain

Ngày tải lên: 04/11/2020, 23:14

... check for syntax and logic errors 5­13 Syntax (cont’d) • Pay attention to and check for:    matching braces { }, parentheses ( ), and brackets [ ] missing or extraneous semicolons correct ... the source code • Comments are used to:     document the program’s purpose, author, revision history, copyright notices, etc describe fields, constructors, and methods explain obscure or ... errors and generates error messages • Text in comments and literal strings within double quotes are excluded from syntax checking • Before compiling, carefully read your code a couple of times to check

Ngày tải lên: 04/11/2020, 23:14

... Fields Construct ors and methods Scope Or: Trang 11Local Variables • Local variables are declared inside a constructor or a method • Local variables lose their values and are destroyed once the constructor ... constructor or the method is exited • The scope of a local variable is from its declaration down to the closing brace of the block in which it is declared Trang 12Local Variables (cont’d) public class ... any other objects, with two exceptions:  Strings in double quotes are recognized as literal constants  + and += concatenate strings (or a string and a number or an object, which is converted

Ngày tải lên: 04/11/2020, 23:14

... Java Methods Object-Oriented Programming and Data Structures 2nd AP edition with GridWorld Maria Litvin ● Gary Litvin if (chapter == 7) Boolean Expressions and if-else Statements Copyright © 2011 ... variables and relational and logical operators 7­5 Relational Operators , =, ==, != is equal to is NOT equal to 7­6 Relational Operators (cont’d) • Apply to numbers or chars: if ( count1 = numSlides) ... Gary Litvin, and Skylight Publishing All rights reserved Objectives: • Learn about the boolean data type • Learn the syntax for if-else statements • Learn about relational and logical operators,

Ngày tải lên: 04/11/2020, 23:14

... for is a shorthand that combines in one statement initialization, condition, and change: for ( initialization; condition; change ) Trang 11• Java allows you to declare the loop control variable ... http://www.mersenne.org Trang 28• Can any code with a for loop be rewritten with a while loop? • Does short-circuit evaluation apply to conditions in loops? • Which operators can be used in the “change” part of ... Numbers (cont’d) • Euclid showed that if 2n-1 is Trang 26Lab: Perfect Numbers (cont’d) • A prime that has a form Write a program to find the first six Mersenne primes and the corresponding perfect

Ngày tải lên: 04/11/2020, 23:15

... the class’s source code • Any object can access and modify a private field of another object of the same class public class Fraction { private int num, denom; Trang 6Accessors and Modifiers accessors, ... constructors and methods; this facilitates team development Trang 9Constructors • A constructor is a procedure for creating objects of the class • A constructor often initializes an object’s Trang 10Constructors ... Trang 38Static Fields (cont’d) • A static field can hold a constant shared by all objects of the class: • A static field can be used to collect statistics or totals for all objects of the class (for

Ngày tải lên: 04/11/2020, 23:15

... String s2 = s1.replace(oldCh, newCh); returns a new string formed from s1 by replacing all occurrences of oldCh with newCh String s2 = s1.toUpperCase(); String s2 = s1.toLowerCase(); returns a ... in Section 6.5) For example: Trang 7Immutability none of its methods can change the string. several references can point to the same object safely: there is no danger of changing an object through ... Trang 1and Data StructuresMaria Litvin ● Gary Litvin 2nd AP edition with GridWorld Trang 2Objectives: commonly used methods extract numbers from strings Character class Trang 3The String class

Ngày tải lên: 04/11/2020, 23:15

... function declaration class first{ public: void display(); }; class second{ public: void display(); }; Object Oriented Scope rules (Contd.) void main() { first object1 ; second object2 ; object1 .display(); ... function is called like func(xobject), while a member function is called like xobject.func() • Designer can select the syntax that is considered most readable Object Oriented Friend classes Declare ... friend of the class Object Oriented Friend Functions (Contd.) Class Friend Function Private! Keep out! Except members and friends Object Oriented Friend Functions (Contd.) A function is made...

Ngày tải lên: 23/03/2014, 04:21

... • Constructors and Destructors s Use Pointers to Objects to access Member Functions Object Oriented Programming with C+ + / Session / of 44 Session Objectives(Contd.) s Describe Virtual functions ... know which copy is being accessed and hence the error occurs Object Oriented Programming with C+ + / Session / 18 of 44 Virtual Base Classes (Contd.) s s To avoid two copies of the base class we ... static binding will be used s Object Oriented Programming with C+ + / Session / 35 of 44 Pure Virtual functions s Some classes such as class Shapes, represent abstract concepts for which objects cannot...

Ngày tải lên: 23/03/2014, 04:21

... Project The Essence of Object- Oriented Analysis Object Discovery Evaluate Candidate Objects Determine Object Hierarchies Discover Object Attributes Discover Object Operations The Essence of Object- Oriented ... run-time constructor An operation that creates an object and defines its initial state For complex objects, construction can be a significant activity, and cause the constructors of other objects ... Other OO Concepts Abstract Classes Visibility of Methods Class vs Instance Accessing Objects A Low-Level View of Objects Chapter Summary Resources Object- Orientation UML Chapter 3: Objects in Java...

Ngày tải lên: 22/08/2013, 14:52

... descriptor a class An object is an instance of a class, type-specific functions for an object are called methods, and messages are calls to such functions We use selector functions to locate and ... destructor called by delete() which receives the object to be destroyed; clone points to a copy function which receives the object to be copied; and differ points to a function which compares its object ... type-specific function which we will call a constructor Since constructor and destructor are type-specific and not change, we pass both to new() as part of the type description Note that constructor...

Ngày tải lên: 22/01/2014, 19:20

... III: WRITING YOUR OWN CLASSES CHAPTER 9: DESIGNING CLASSES Class Design Scope Block Scope Local Scope Class Scope Namespace Scope Visualizing Scope Why Does C# Support Scope? Think Before You ... WRITING CUSTOM CLASSES Constructors Default Constructors Nondefault Constructors Constructor Overloading Constructor Sloppiness Fixing the Constructor Problem Always Call the Default Constructor Property ... introduction to object- oriented programming The goal of that chapter is to present the concept of objects fi rst and then ease into how objects may be viewed in C# Virtually all of the concepts...

Ngày tải lên: 15/02/2014, 07:20

... Exercises CHAPTER 6—OBJECTS AND CLASSES A Simple Class Classes and Objects Declaring the Class Using the Class Calling Member Functions C+ + Objects As Physical Objects Widget Parts as Objects Circles ... Constructing the CRC Cards Classes Responsibilities Collaborators The Tenant CRC Card The Expense CRC Card The Rent Input Screen CRC card The Rent Record CRC Card The Expense Input Screen CRC ... Class Objects As Arguments The Default Copy Constructor Returning Objects from Functions Arguments and Objects A Card–Game Example Structures and Classes Classes, Objects, and Memory Static Class...

Ngày tải lên: 21/02/2014, 06:20

... bank accounts) and then create individual objects from this class (e.g your bank account) Download free eBooks at bookboon.com 20 Object Oriented Programming using C# An Introduction to Object Orientated ... source code to execute on a particular machine… compilation into machine-language object code direct execution of source code by ‘interpreter’ program compilation into intermediate object code ... what Object Oriented Programming is, Describe the beneits of the Object Oriented programming approach and Understand the basic concepts of abstraction, encapsulation, generalisation and polymorphism...

Ngày tải lên: 21/02/2014, 06:20