🔵 C Program to Calculate Area of a Circle | Step-by-Step Tutorial (2026)
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In this video, you'll learn how to write a *C program to calculate the area of a circle* using the radius entered by the user. This practical tutorial is designed for beginners and college students, with a complete explanation of the formula, logic, code, and sample output.
📐 Formula Used
*Area = π × r × r*
Where:
*π (Pi) = 3.14159*
*r = Radius of the Circle*
📚 What You'll Learn
✅ Circle Area Formula
✅ Variables and Data Types (`float`)
✅ Using `#define PI 3.14159`
✅ User Input with `scanf()`
✅ Display Output using `printf()`
✅ Complete C Program Explanation
✅ Sample Input & Output
✅ Step-by-Step Logic Building
💻 Program Covered
Read Radius from User
Calculate Area of Circle
Display the Result
Understanding Mathematical Operations in C
🎯 Perfect For
BCA Students
MCA Students
B.Tech / BE Students
Diploma Engineering Students
B.Sc. IT Students
Beginners Learning C Programming
Practical & Viva Exam Preparation
Campus Placement Preparation
🚀 Why Watch This Video?
✔ 100% Practical Coding
✔ Beginner-Friendly Tutorial
✔ Easy-to-Understand Explanation
✔ College Practical Program
✔ Exam-Oriented Example
✔ Strong Programming Fundamentals
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