Nested IF

Code pattern

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Definition

An IF inside the ELSE of another IF to test several conditions where only one process runs.

Example

IF a THEN ... ELSE IF b THEN ... ELSE ... ENDIF ENDIF

Found in: course specifications, 2025 HSC marking guidelines.

Where you'll use it in the test

Syllabus area: Code patterns.

Question types it can appear in

Pseudocode: Use it correctly in the exam pseudocode editor.
Code reading: Code or algorithm reading: interpret a fragment and state its output or purpose.
Python: Write or complete it in the online Python tool.

Where it has appeared in the paper

The Software Engineering Project (Part A). Part letters follow each paper’s own layout.

How to use it

A model sentence

General advice, built from the definition and example above

Code pattern: “An IF inside the ELSE of another IF to test several conditions where only one process runs.” Then apply it: IF a THEN ... ELSE IF b THEN ... ELSE ... ENDIF ENDIF

In a short answer, give the definition in your own words first, then tie it to the situation in the question. Do not copy the example above unless it fits the scenario.

Go deeper

Flashcard: Nested IF in Code Patterns: Pseudocode, Python, SQL, CSS (Years 11 and 12) · study that set
Memorise: Python and SQL you must be able to write
Notes: Control structures in HSC pseudocode (Pseudocode, flowcharts and diagram rules)
Master answer: hsc2025-q26 (5 marks, Python) (Master model answers: code, SQL, pseudocode, diagrams and tables)
Full term page: every question, note and marking comment for Nested IF

Check yourself

Write or say the “Nested IF” pattern from memory: the syntax and what it does.

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