Official Documentation

MASTER THE LOGIC.

Welcome to the PseudoStudio tutorial hub. The ultimate resource for IGCSE and A-Level Computer Science. Learn the algorithms, master the syntax, and test your code instantly.

What is IGCSE Pseudocode?

Cambridge exams (0478, 2210, 9618) do not test you on Python, Java, or C++ during your written Paper 2 exams. Instead, they test your understanding of pure logic using a standardized, language-independent syntax called Pseudocode.

The biggest mistake students make is writing "Syntax Soup"—accidentally using Python shortcuts instead of strict pseudocode. Our interactive guides and cloud compiler will train you to write the exact format examiners are looking for.

Python vs. Cambridge Pseudocode

If you learned Python first, you are likely losing marks on simple syntax errors. Here are the core differences you must memorize:

Concept 🐍 Python (Wrong for Exams) 📘 Cambridge Pseudocode (Correct)
Assignment score = 10 Score ← 10
Declaration (Not Required) DECLARE Score : INTEGER
Equality Check if score == 10: IF Score = 10 THEN
Array Indexing Starts at 0 Starts at 1

Algorithm Fundamentals

Master the building blocks of computer science. Select a topic to jump directly to the guide.

Interactive Past Paper Practice

PseudoStudio guides feature interactive code blocks. Read the problem below, try to solve it in your head, and then hover or tap the black box to reveal the examiner's solution. Click Run Code to test it instantly in our IDE!

Scenario: Write an algorithm using a WHILE loop that outputs the word "Hello" exactly 3 times.
Tap to Reveal Answer
DECLARE Count : INTEGER
Count ← 1

WHILE Count <= 3
    OUTPUT "Hello"
    Count ← Count + 1
ENDWHILE

Common Pseudocode Questions

Answers to the most frequently searched exam topics.

What is the difference between Pseudocode and Python?
Python is a high-level programming language that runs on a computer. Pseudocode is a structured, language-independent way to design algorithms on paper. Cambridge exams test Pseudocode to ensure students understand pure logic without relying on language-specific shortcuts (like Python's append() or sum() methods).
Is there an official Cambridge Pseudocode compiler?
Cambridge does not provide an official compiler. That is exactly why we built PseudoStudio. Our cloud-based IDE is calibrated to enforce the exact syntax rules found in the IGCSE and A-Level syllabi, acting as an unofficial but highly accurate compiler.
Do arrays start at 0 or 1 in IGCSE Pseudocode?
In Cambridge standard pseudocode, arrays utilize 1-based indexing. This means the first element in an array is accessed using Array[1], not Array[0] like in Python or Java.