Overview of Programming Paradigms Definitions z Programming Paradigm

Definitions z. Programming Paradigm Õprogramming “technique” (? ) Õway of thinking about programming Õview

Programming Paradigms z. Imperative Programming Õprogram as a collection of statements and procedures affecting

Some Languages by Paradigm z. Imperative (also called Structured or Procedural) Programming ÕFORTRAN, BASIC,

History of Languages z 1950 s to 1960 s ÕFORTRAN, COBOL, LISP, BASIC z

Paradigm Change z. For example, from Structured to Object. Oriented z. Arises from problems

Object-Oriented Programming z. Incorporates both encapsulation and inheritance through the class concept z. Focus

Imperative Programming z. Variables, assignment, sequencing, iteration, procedures as units z. State-based, assignment-oriented z.

Data and Computation z. Binding z. Data ÕVariables ÕData types z. Computation ÕAssignments and

Modularity z. Interface and Implementation z. Compilation ÕIndependent ÕSeparate z. Libraries

Slides: 11

Download presentation

Overview of Programming Paradigms

Definitions z. Programming Paradigm Õprogramming “technique” (? ) Õway of thinking about programming Õview of a program z. Programming Language Õconsists of words, symbols, and rules for writing a program

Programming Paradigms z. Imperative Programming Õprogram as a collection of statements and procedures affecting data (variables) z. Object-Oriented Programming Õprogram as a collection of classes for interacting objects z. Functional Programming Õprogram as a collection of (math) functions

Some Languages by Paradigm z. Imperative (also called Structured or Procedural) Programming ÕFORTRAN, BASIC, COBOL, Pascal, C z. Object-Oriented Programming ÕSmall. Talk, C++, Java z. Functional Programming ÕLISP, ML, Haskell

History of Languages z 1950 s to 1960 s ÕFORTRAN, COBOL, LISP, BASIC z 1960 s to 1970 s Õ(ALGOL-based) Pascal and others z 1970 s to 1980 s ÕProlog, C, Ada z 1980 s to 1990 s ÕC++, ML, Perl, Java

Paradigm Change z. For example, from Structured to Object. Oriented z. Arises from problems encountered in one paradigm but addressed in another z. Case study: from C to C++ ÕEvolution from structured, to modular, to object-based, to object-oriented programming

Object-Oriented Programming z. Incorporates both encapsulation and inheritance through the class concept z. Focus is on writing good classes and on code reuse z. Examples ÕShape, Circle, and Rectangle in a drawing program ÕEmployee, Faculty, Staff in a university personnel system

Imperative Programming IT 240

Imperative Programming z. Variables, assignment, sequencing, iteration, procedures as units z. State-based, assignment-oriented z. Global variables, side effects z. Program units: Data (Variables) and Computation (Statements and Routines)

Data and Computation z. Binding z. Data ÕVariables ÕData types z. Computation ÕAssignments and expressions ÕControl structures ÕSubprograms / routines

Modularity z. Interface and Implementation z. Compilation ÕIndependent ÕSeparate z. Libraries