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# C Program to Find the Area of a Circle

This C program calculates the area of a circle using its radius.

## Problem Statement

1. The program structure starts with the problem statement, followed by the input and output sections.
2. The variable declaration, calculation, and formatting of the output remain the same as in the previous program.

## C Program to Find the Area of a Circle

```#include <stdio.h>

int main() {
// Intro
printf("C Program to Calculate the Area of a Circle\n");
printf("------------------------------------------\n");

// Problem Statement
printf("Given the radius of a circle, this program calculates its area.\n");

// Variables
const float PI = 3.14159;

// Input
printf("\nEnter the radius of the circle: ");

// Calculation

// Output
printf("\nThe area of the circle with radius %.2f is: %.2f\n", radius, area);

return 0;
}```

## How it works

1. We begin by including the necessary header file, `stdio.h`, which provides input/output functionality.
2. Inside the `main` function, we declare the variables `radius` and `area` as floats, and the constant `PI` with a value of 3.14159.
3. We display an introductory message and the problem statement using `printf`.
4. The user is prompted to enter the radius of the circle using `printf`.
5. The value entered by the user is read into the `radius` variable using `scanf`.
6. The area of the circle is calculated using the formula `area = PI * radius * radius`.
7. Finally, the calculated area is displayed on the screen using `printf`

## Input / output

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