#35 User Defined Functions in C | Function Prototype, Call & Definition Explained with Examples

Master User-Defined Functions in C Programming – Complete Breakdown for Beginners to Intermediate

In this video, you'll learn all about user-defined functions in C and how they make your code more structured, reusable, and easy to debug.

📌 What’s Covered:
✅ What is a user-defined function?
✅ Importance of modular programming in C
✅ Function components explained in detail:

Function Prototype (Declaration)

Function Call

Function Definition (Body)
✅ Examples: Sum of two numbers, factorial, and custom input validators
✅ Best practices while writing and reusing functions
✅ Common mistakes and how to avoid them

Perfect for students, beginners in programming, and anyone preparing for C interviews and coding tests.

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