Parameter and argument

Term

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Definition

A parameter is a variable in the subroutine's definition that receives data; an argument is the actual value passed when the subroutine is called.

Example: 'def greet(name)' has parameter name; 'greet("Sam")' passes argument "Sam".

Found in: syllabus, course specifications, school notes, past SDD papers.

Where you'll use it in the test

Syllabus area: Y11 Programming Fundamentals.

Question types it can appear in

Python: Write or complete it in the online Python tool.
Pseudocode: Use it correctly in the exam pseudocode editor.
Multiple choice: Pick the option that matches the definition or example.

Where it has appeared in the paper

Secure Software Architecture (Part B). Part letters follow each paper’s own layout.

How to use it

A model sentence

General advice, built from the definition and example above

“A parameter is a variable in the subroutine's definition that receives data; an argument is the actual value passed when the subroutine is called.” Then apply it: 'def greet(name)' has parameter name; 'greet("Sam")' passes argument "Sam".

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.

Official worked answer

Sample exam Q18b (3 marks): Developing secure code (Python input validation) (3 marks): official criteria and sample answer

Criteria

3: Correct function in Python to check whether a username satisfies the rules. 2: Partially correct function. 1: Some understanding of the problem and Python.

Sample answer

def validate_username(username): valid = True

 # length check
 if len(username) < 8:
      valid = False
 elif (not username[0].isupper()):
      valid = False
 elif (not username[-2].islower()):
      valid = False
 elif (not username[-1].isdigit()):
      valid = False

 return valid

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Go deeper

Flashcard: Parameter and argument in Programming Fundamentals (Year 11) · study that set
Memorise: Software development steps and algorithm design
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