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FC0-U71 Practice Question: A junior developer needs to create a simple…
A junior developer needs to create a simple program that adds two numbers and displays the result. Which programming paradigm is most suitable for this task?
⚠ Common exam trap
CompTIA often tests the misconception that object-oriented programming is always the 'modern' or 'best' choice, leading candidates to select it even for trivial tasks where its overhead is unnecessary.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Procedural programming
Procedural programming is the most suitable paradigm for a simple program that adds two numbers and displays the result because it follows a linear, step-by-step sequence of instructions. The developer writes a series of statements (e.g., `result = a + b; print(result)`) that execute in order, directly mapping the task's logic without unnecessary abstraction. This paradigm is ideal for small, straightforward tasks where clarity and direct control over execution flow are paramount.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Functional programming
Why it's wrong here
Functional programming suits stateless computation, but the stem's requirement is simply sequential input, arithmetic and output — imperative statements execute that directly. Functional purity, immutable bindings and composing pure functions add machinery the task never demands. It would be the right choice where transformations must be composed, parallelised or tested without side effects.
- ✗
Declarative programming
Why it's wrong here
Declarative programming describes the desired result rather than the step sequence, which suits query languages and configuration templates, not a trivial arithmetic procedure. Adding two numbers and printing the sum is naturally expressed as explicit imperative steps.
- ✗
Object-oriented programming
Why it's wrong here
Object-oriented programming models state and behaviour as classes and objects, so a two-number addition would need a class and method before any output appears. It is tempting because OOP suits large systems needing encapsulation and reuse. For a single arithmetic operation, a procedural script executes the steps directly without that scaffolding.
- ✓
Procedural programming
Why this is correct
Procedural programming structures a solution as a sequence of steps and procedure calls, which suits a simple linear task: read two values, add them, print the result. No objects, classes or state modelling are needed here.
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