Categories: All Variables and Constants  String manipulation  Builtin functions  Input and output  Arrays  Conditional logic  Repetition / Iteration  Functions / Procedures 

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This resource is designed as a quick reference or revision guide. It has not been endorsed by any exam boards. If you spot any mistakes, please let me know and I'll fix them asap.

Introduction

This website aims to give a quick reference for VB.NET, Python, C# and pseudocode and is aimed primarily at teachers & students working towards a GCSE in Computer Science

VB.NET, Python and C# are programming languages designed to be understood and followed by computers. Pseudocode is not a programming language: it's written to be understood by humans so that they can turn it into any programming language.

Each exam board has published a document saying how they'll write pseudocode in their exams. The whole idea of syntax (a set of rules) for pseudocode is silly - it's not designed to be a programming language that is run by a computer. With this in mind, all exam boards state that you don't have to follow the syntax for 'their' version of pseudocode when you write out your own algorithms, but you should be able to understand their version of pseudocode when reading an algorithm in an exam.

Top Tips:

  • Explore the different categories of skills at the top of this page
    Each skill has example code in VB.NET, Python, C# and Pseudocode for Edexcel, Eduqas and OCR GCSE.
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    If you know what you're looking for, use the search bar above the categories list.
Skill
Description
Pseudocode (Edexcel)
VB.NET
Python
Exam Reference Language (OCR)
Pseudocode (Eduqas)
C#
Real constants
   

Reals are numbers that can contain a decimal place.

Constants store a value that is set once and then never changes.

Real constants let you give a decimal number a name so you can use it to make your code easier to read or to set options for your code that the user wont be able to change.

In this example, a constant called PI is set to the real value of 3.141

 

CONST REAL PI SET PI TO 3.141
' Create a new constant called PI Const PI As Double = 3.141
# Create a new constant called PI PI = 3.141
const PI = 3.141
{ no mention of constants or reals in the pseudocode spec } PI is real set PI = 3.141
// Create a new constant called PI const double PI = 3.141;

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