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Systems Analysis and Design (Shell...

11th Edition
Scott Tilley + 1 other
ISBN: 9781305494602

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BuyFindarrow_forward

Systems Analysis and Design (Shell...

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

Define the term “block box,� and explain why it is an important concept in object-oriented analysis. Can you think of other black boxes that you use in everyday life?

Program Plan Intro

Definition of black box and its importance in object -oriented analysis.

Program Explanation

An object in Object Oriented Programming can be viewed as Black box that means changes in that object are made showing how changes are occurring.

Encapsulation is the concept behind black box where we know the input and output of a system without knowing the actual working of self contained functions which operate on data.

Examples of black box that we use in our life are:

  • Camera: We take pictures without knowing internal working of camera.
  • Computers: We type on keyboard and get output on screen.

Example of black box as an object in OOP:

#include<iostream> 
using namespace std; 
 class Circle
{ 
    // r and area not visible from outside the class, h...

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