How to Calculate Area and Perimeter of a Circle in C Programming Language | Step-by-Step Tutorial
In this video, we will walk through writing a C program to calculate the area and perimeter of a circle when the radius is provided by the user.
We’ll start by asking the user to enter the radius and then use the formula for area (π × radius²) and perimeter (2 × π × radius) to perform the calculations. I’ll explain each step of the code, including how to read input, validate that the radius is a positive number, and display the calculated area and perimeter. Along the way, I’ll cover the use of functions like `printf` and `scanf`, as well as how to define and use variables for the radius, area, and perimeter. If you're new to C programming or want to refresh your skills, this tutorial is a great place to start.