4.1.2.1 Programming paradigms

Question 1

What is a programming paradigm?

Answer 1

A method of programming. Some programming languages are more suited to certain paradigms

Question 2

What is a procedural / imperative programming paradigm?

Answer 2

Writing a program in steps with statements, functions executed in order
e.g C++

Question 3

What is a object-orientated progarmming paradigm?

Answer 3

Organized around objects rather than actions.
Data and functions are stored in the same memory location
e.g python, java

Question 4

What are the advantages of procedural programming?

Answer 4

Simplicity compared to OOP, as its easy to keep track of program flow
You can reuse the same code at different points using subroutines

Question 5

One practical way in which the programmer will use a structured approach to programming is the use of subroutines (procedures/functions). Give three other ways.

Answer 5

Procedures which have an interface / using parameters to pass values ;
Use of modules / use of libraries ;
Avoid global variables / use of local variables;
Meaningful identifier names;
Consistent use of case for identifiers ;
Use of selection / loops / iteration ;
Avoid the use of GoTo structures ;
Effective use of white space / indentation;
Use of named constants ;
Use of user-defined data types ;
Use of pseudo-code / top down approach