Data Cleaning and Preprocessing in Data Science | Why Data cleaning need

Concept of oop

Oop's  definition:-

                                                                         The programming paradigm where everything is represent as an object, is known as truly object oriented programming language. The main aim of object oriented programming is to implement real world entities i.e. object, classes, abstraction, inheritance, polymorphism etc. Object oriented programming – As the name suggests uses objects in programming. Object oriented programming aims to implement real world entities like inheritance, hiding, polymorphism etc. in programming. The main aim of OOP is to bind together the data and the functions that operates on them so that no other part of code can access this data except that function.

Let us learn about different characteristics of an Object Oriented Programming language:

Object: 

Objects are basic run-time entities in an object oriented system, objects are instances of a class these are defined user defined data types.

ex: #include<iostream.h> #include<conio.h> class add { public: int a; int b; int c; public: void addition(void); }; void  add::addition(void) { cout<<endl<<"plese enter the value of a and b:"; cin>>a>>b; cout<<endl<<a; cout<<endl<<b; c=a+b; cout<<endl<<"the sum of those numbers:"<<c; } void main() { clrscr(); add A; A.addition(); getch();

Object take up space in memory and have an associated address like a record in pascal or structure or union in C.
When a program is executed the objects interact by sending messages to one another.
Each object contains data and code to manipulate the data. Objects can interact without having to know details of each other’s data or code, it is sufficient to know the type of message accepted and type of response returned by the objects.

Class: 

Class is a blueprint of data and functions or methods. Class does not take any space.

Syntax for class: class class_name {   private:      //data members and member functions declarations   public:      //data members and member functions declarations   protected:      //data members and member functions declarations }; I

Class is a user defined data type like structures and unions in C.
By default class variables are private but in case of structure it is public. in above example person is a class.

Encapsulation and Data abstraction: 

Wrapping up(combing) of data and functions into a single unit is known as encapsulation. The data is not accessible to the outside world and only those functions which are wrapping in the class can access it. This insulation of the data from direct access by the program is called data hiding or information hiding.
Data abstraction refers to, providing only needed information to the outside world and hiding implementation details. For example, consider a class Complex with public functions as getReal() and getImag(). We may implement the class as an array of size 2 or as two variables. The advantage of abstractions is, we can change implementation at any point, users of Complex class wont’t be affected as out method interface remains same. Had our implementation be public, we would not have been able to change it.

Inheritance: 

inheritance is the process by which objects of one class acquire the properties of objects of another class. It supports the concept of hierarchical classification. Inheritance provides re usability. This means that we can add additional features to an existing class without modifying it.

Polymorphism: 

polymorphism means ability to take more than one form. An operation may exhibit different behaviors in different instances. The behavior depends upon the types of data used in the operation.
C++ supports operator overloading and function overloading.
Operator overloading is the process of making an operator to exhibit different behaviors in different instances is known as operator overloading.
Function overloading is using a single function name to perform different types of tasks.
Polymorphism is extensively used in implementing inheritance.

Dynamic Binding: 

In dynamic binding, the code to be executed in response to function call is decided at runtime. C++ has virtual function to support this.

Message Passing: 

Objects communicate with one another by sending and receiving information to each other. A message for an object is a request for execution of a procedure and therefore will invoke a function in the receiving object that generates the desired results. Message passing involves specifying the name of the object, the name of the function and the information to be sent.
                                                                                                                 

To learn more you can just click the below topics:

C++
INTRODUCTION OF C++ || Definition of C++
Brief history of C++ || history of C++
Features of C++ || why we use C++ || concept of C++
Difference Between OOP And POP || Different Between C and C++
Characteristics of C++
Interesting fact about C++ || Top 10 interesting fact about C++
C++ Program Structure
Writing first program in C++ || how to write hello world in C++
Basic Data Type And Variable In C++
Identifier in C++
Keywords in C++
Token in C++
Comment in C++
Constant in C++
Modifier in C++
Taking User Input in C++ | User input in C++
Input Output Operator In C++
C++ Operators | Operator in programming language
How to Add two number in C++
Polymorphism in C++
Compile Time Polymorphism in C++
Function overloading in C++
Operator Overloading in C++
What are Control Structures in C++ || Understanding Control Structures in C++ | How to use if, else, switch
What are Functions and Recursion in C++ | How to Defining and Calling Functions
Class in C++
Object in C++
Data Science Data Science Tools and Techniques Data Science Tools and Techniques
The History and Evolution of Data Science
Scope of Data Science
Why learn Data Science? | Why Data Science?
Impact of Data Science
The Importance of Data in Science | Introduction to Data Science
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Algorithm
Why algorithm | The Importance of Algorithms in Modern Technology
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