c object oriented programming interview questions

... 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

... nobody can directly  access this  information.  The  only access is through  functions that we  provide for the class class thinking_cap  {       . .  private:      char green_string[50];      char red_string[50]; ... This presentation introduces  OOP Programming Data Structures and Other Objects Using C++ Trang 2There is no real  answer to the question,  but we’ll call it a  “thinking cap” The plan is to describe  a thinking cap by  ... Trang 1Chapter 2 introduces Object  Oriented Programming OOP is a relatively new  approach to programming  which supports the creation  of new data types and  operations to manipulate 

Ngày tải lên: 01/04/2021, 19:25

... basic Shape “class” in C can be declared as follows (NOTE: The code corresponding to this section is located in the sub-directory: oop_in_c/encapsulation/): Listing 1 Declaration of the Shape “class” ... of functions that includes fopen(), fclose(), fread(), fwrite(), etc operates on objects of type FILE The FILE structure is thus encapsulated because client programmers have no need to access ... structure (fopen() and fclose()) These functions play the roles of class constructor and destructor, respectively You can very easily apply these design principles to come up with your own “classes”

Ngày tải lên: 15/10/2021, 21:51

... allocated for the object • A class has two constructors by default: a constructor without parameters (default) and a copy constructor Trang 27▪ Constructors Trang 28▪ Constructors Trang 29▪ Constructors ... derived class protected public protected protected protected protected protected private private Trang 81• The access of any member (the access type of which is protected or public in the base class) ... class, child class, subclass Trang 72above: class ClassA {// }; class ClassB : public ClassA {// }; Trang 73The multiple inheritance of I/O classes in C++ Trang 74Hierarchy of geometrical classes

Ngày tải lên: 15/02/2022, 19:02

... thì hàm sẽ tạo ra các biến mới (tên các biến này là tên của các tham số), copy giá trị của các đối số vào các biến mới và thao tác trên các biến mới này Bởi vậy sau khi gọi hàm các đối số không ... đâu trước khi gọihàm Tốt nhất là để ở đầu tệp chứa chương trình chính(chứa hàm main) hoặc để trước một hàm sẽ gọi nó.Trong các chương trình nhiều file thì các khai báo hàmthường để trong các file ... viên của lớp  Cú pháp gọi hàm như sau: Tên_hàm(Danh sách các đối số, nếu có);  Nếu hàm được khai báo và định nghĩa là có cáctham số thì khi gọi hàm ta phải truyền giá trị chohàm qua các tham

Ngày tải lên: 30/06/2023, 08:58

... lệnh cout.precision(0); thì các số được đưa ra theo mặc định (6 chữ số phần thập phân) Trang 16Ngô Công Thắng - Bài giảng LTHDT - Chương 01_4 16III Một chương trình C++ đơn giản Ví dụ 4.1: Viết chương ... trắng (Enter hoặc Space hoặc Tab) Ví dụ: cin>>a>>b>>c; Trang 9Kết hợp cin và cout để nhập dữ liệu từ bàn phím cout<<“Lời nhắc: ”; cin>>Biến; Trang 10Ngô Công Thắng - ... chỗ);  Lệnh cout.width(số chỗ); chỉ có tác dụng đối với 1 giá trị đưa ra màn hình ngay sau đó. Ví dụ: cout.width(8); cout<<a+b;  Cứ mỗi giá trị đưa ra cần một lệnh ấn định số chỗ cho nó. Trang

Ngày tải lên: 30/06/2023, 08:58

... số thực (số dấu phẩy động)  Kiểu logic Trang 42 Các kiểu dữ liệu trong C++Các kiểu dữ liệu trong C++ gồm có  Các kiểu dữ liệu có cấu trúc  Kiểu mảng  Kiểu xâu ký tự  Kiểu cấu trúc (bản ... tự có thể được dùng như kiểu số nguyên với các tên sau:  char: có giá trị -128 – 127  unsigned char: có giá trị 0 – 255 Tất cả các ký tự đều lưu trữ trong bộ nhớ dưới dạng số là mã ASCII của ... 1Ngô Công Thắng - Bài giảng LTHDT - Chương 01_2 1Chương 01.2: Các kiểu dữ liệu cơ bản trong C++ I Khái niệm về kiểu dữ liệu 1 Khái niệm về kiểu dữ liệu 2 Các kiểu dữ liệu trong C++ II Các kiểu

Ngày tải lên: 30/06/2023, 08:58

... "Water: %i" xend Object Expressions Object expressions are at the heart of succinct object-oriented programming in F# They vide a concise syntax to create an object that inherits from an ... Interface types have the advantage that they can be arranged hierarchically; this is called interface inheritance For example, the NET BCL includes a hierarchical classification of collection ... height Object expressions are a powerful mechanism to quickly and concisely introduce oriented functionality from objects from non-F# libraries into your F# code They have the object-drawback that

Ngày tải lên: 05/10/2013, 10:20

... are not restricted to classifying concrete objects (such as cars); they can also be used to classify abstract concepts (such as time) However, when you are classifying abstract concepts, the boundaries ... balance 99.12 owner "Fred" An account object The account class Classes contain static data and static methods Objects contain object data and object methods


***************************** ... You can control accessibility for both static methods and static data by using access modifiers such as public and private By choosing public static methods and private static data, you can encapsulate

Ngày tải lên: 10/12/2013, 16:16

... module class_Circle ! define the second object class real :: pi = 3.1415926535897931d0 ! a circle constant type Circle real :: radius ; end type Circle contains ! Computation of area for circles. ... function use class_Circle use class_Rectangle ! Interface to generic routine to compute area for any type interface compute_area module procedure rectangle_area, circle_area ; end interface ... circles. function circle_area ( c ) result ( area ) type ( Circle ), intent(in) :: c real :: area area = pi * c%radius**2 ; end function circle_area end module class_Circle program geometry

Ngày tải lên: 12/12/2013, 21:16

... Hewitt, C., Actors: Conceptual Foundation for Concurrent Object-Oriented Programming, in Wegner, P and Shriver, B eds., Research Directions in Object-Oriented Programming, MIT Press, Cambridge, ... Semantics and Typing, Technical Report UW-CSE-96-12-02, Dept of Computer Science, University of Washington, December, 1996 [23] Chambers, C., The Cecil Language: Specification and Rationale, Technical ... Department of Computer Science, Edinburgh University, 1980 [20] Canon, H., Favors, A Non-Hierarchical Approach to Object-Oriented Programming, Draft, MIT Computer Science Laboratory, 1982 [21] Cardelli,

Ngày tải lên: 05/03/2014, 20:20

... Object Oriented Programming is a good programming practise to create manageable projects more easily Procedural programming means writing code without objects Procedural programming consists ... performance improvement in PHP5 for OOP Some Basic OO Terms Some of the basic object-oriented terms are as follows: Class: A class is a template for an object A class contains the code which defines ... OOP was introduced since PHP3 but that was just an illusion for real object oriented programming In PHP4 you can create objects but you can't feel the real flavour of an object there In PHP4...

Ngày tải lên: 22/03/2014, 23:20

... Lecture 2: Object Oriented Programming Procedural vs Object-Oriented Programming  The unit in procedural programming is function, and unit in object-oriented programming is class  Procedural ... { price = newPrice; } } CreatePencil.java public class CreatePencil { public static void main (String args[]){ Pencil p1 = new Pencil(); p1.price = 0.5f; } } %> javac Pencil.java %> javac CreatePencil.java ... protected: protected members are accessible in classes in the same package, in subclasses of the class, and in the class itself  public: public members are accessible anywhere the class is accessible

Ngày tải lên: 24/03/2014, 03:20

... Trang 1Lecture 3:Object Oriented Programming Trang 2Object Creation Body sun = new Body( ); new object reclaim space from other no longer used objects If there is still no enough space, then ... inside a constructor, you can use this to invoke another constructor in the same class This is called explicit constructor invocation It MUST be the first statement in the constructor body ... Trang 9 Classes can be grouped in a collection called package  Java’s standard library consists of hierarchical packages, such as java.lang and java.util http://java.sun.com/j2se/1.4.2/docs/api

Ngày tải lên: 24/03/2014, 03:20

... into object- oriented programming methodology and design—concepts that transcend a particular programming language The concepts presented are important to the success of an objectoriented programming ... for your study of object- oriented programming and C# , this chapter will briefly look at the history of object- oriented programming and the characteristics of an object- oriented programming language ... you interact with a car object A car object consists of other objects that interact with each other to accomplish the task of getting you to the store You put the key in the ignition object and...

Ngày tải lên: 31/03/2014, 16:40

... globally visible part of Circle .c: static const struct Class _Circle = { sizeof(struct Circle), Circle_ctor, 0, Circle_draw }; const void * Circle = & _Circle; While it looks like we have a viable ... object, dynamic linkage lets us find type-specific functions: every object starts with a descriptor which contains pointers to functions applicable to the object In particular, a descriptor contains ... same 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...

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

... 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 ... 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 ... User-Defined Objects A Set of person Objects A List of person Objects Function Objects Predefined Function Objects Writing Your Own Function Objects Function objects Used to Modify Container Behavior...

Ngày tải lên: 21/02/2014, 06:20

... bookboon.com 11 Object Oriented Programming using C# An Introduction to Object Orientated Programming An Introduction to Object Orientated Programming Introduction his chapter will discuss diferent programming ... 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 ... allowing current parts of the system to interact with new object without concern for the speciic properties of the new objects 1.5 What Exactly is Object Oriented Programming? Activity Think of an object...

Ngày tải lên: 21/02/2014, 06:20

... games xvii PREFACE APPROACH Object- Oriented Programming Using C+ + teaches object- oriented concepts using C+ + as a tool to demonstrate these concepts This book teaches programming concepts using a ... PROGRAMMING An object is a specific instance of a class; a class defines the characteristics of its objects and the methods that can be applied to its objects In object- oriented languages, you can create ... OF OBJECT- ORIENTED PROGRAMMING AND C+ + Basic logic components used in programs are called control structures Three basic control structures are used in procedural programming In the sequence...

Ngày tải lên: 05/03/2014, 13:20