> ## Documentation Index
> Fetch the complete documentation index at: https://learn.acadlink.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Functions — Questions

> Choose a question to practice.

<CardGroup cols={2}>
  <Card title="Q1 — Add Two Numbers" icon="terminal" href="/practice/c/functions/add-two-numbers">
    Write a function that takes two integers and returns their sum.
  </Card>

  <Card title="Q2 — Factorial Using Recursion" icon="terminal" href="/practice/c/functions/factorial-recursion">
    Calculate the factorial of a number using a recursive function.
  </Card>

  <Card title="Q3 — Check Prime" icon="terminal" href="/practice/c/functions/check-prime">
    Check whether a number is prime using a user-defined function.
  </Card>
</CardGroup>