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Systems Analysis and Design (Shell...

11th Edition
Scott Tilley + 1 other
ISBN: 9781305494602

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Chapter
Section
BuyFindarrow_forward

Systems Analysis and Design (Shell...

11th Edition
Scott Tilley + 1 other
ISBN: 9781305494602
Textbook Problem

Define encapsulation, and explain how it is used in object-oriented analysis.

Program Plan Intro

Data encapsulation and ways in which it is used in object-oriented analysis.

Program Explanation

Encapsulation is enclosing something so that it is not visible from outside. An example is capsule which encapsulates medicines in its shell.

Similarly in object-oriented analysis, some of the data and processes are kept hidden from outside. Classes are created in object-oriented modeling to carry out data encapsulation by making data and functions private and public.

Let us take a small example of C++ program which calculates area of rectangle using encapsulation:

Example

#include <iostream>

using namespace std;

class Area
{
    private:
        int l, b;
        int rectarea;
    public:
        
        void calcarea(int len, int breadth)
        {
            int area;
            l=len;
            b=breadth;
            rect...

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