Object Oriented Programming

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Object Oriented Programming

  1. 1. Disclaimer: This presentation is prepared by trainees ofbaabtra as a part of mentoring program. This is not officialdocument of baabtra –Mentoring PartnerBaabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt .Ltd
  2. 2. OOP’s concept Abstraction & Encapsulation Anupa Gopinath Anupa.gopi@gmail.com www.facebook.com/anupa.g opinath9# twitter.com/anupa.gopinath in.linkedin.com/in/anupa.gop inath 9633591614
  3. 3. Abstraction• Abstraction is the process or result of generalization by reducing the information content of a concept or an observable phenomenon, typically in order to retain only information which is relevant for a particular purpose
  4. 4. Functional Abstraction vs. Data Abstraction• Functional abstraction means that a function can be used without taking into account how the function is implemented.• Example-• <iostream.h>: cin, cout, endl, setprecision( ), setw( )• <string.h>: strcat( ), strcmp( ), strcpy( ), strlen( )• <math.h>: ceil( ), sin( ), exp( ), log( ), pow( ), sqrt( )
  5. 5. • Data Abstraction means that data can be used without taking into account how the data are stored.• Example-when we make use of data types ,we don’t care how the data are stored, but only what operations are provided and what properties are supported.• int i, j, k;• Float y,l;
  6. 6. Encapsulation• it is a process of binding or wrapping the data and the codes that operates on the data into a single entity. This keeps the data safe from outside interface and misuse. One way to think about encapsulation is as a protective wrapper that prevents code and data from being arbitrarily accessed by other code defined outside the wrapper.
  7. 7. • Encapsulation defines the access levels for elements of that class. These access levels define the access rights to the data, allowing us to access the data by a method of that particular class itself, from an inheritance class, or even from any other class. There are three levels of access:• public: functions of all classes may access the data or methods of a class that is defined with the public access level. This is the lowest level of data protection• protected: data access is restricted to functions of inheritance classes, i.e. member functions of that class and all sub-classes• private: data access is restricted to methods of that particular class only. This is the highest level of data protection
  8. 8. If this presentation helped you, please visit our page facebook.com/baabtra and like it. Thanks in advance.www.baabtra.com | www.massbaab.com |www.baabte.com
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