##### Finding Area Of Circle In C Programming

Here’s a C program that accepts the radius of a circle and calculates and prints its area:

` ````
```#include
#define PI 3.14159
int main() {
float radius, area;
printf("Enter the radius of the circle: ");
scanf("%f", &radius);
area = PI * radius * radius;
printf("The area of the circle with radius %.2f is %.2f.\n", radius, area);
return 0;
}

##### Output

In this program, we declare a

`radius`

variable of type`float`

to store the input radius value, and an`area`

variable of type`float`

to store the calculated area.The user is prompted to enter the radius of the circle using the

`printf`

function, and the`scanf`

function is used to read the input and store it in the`radius`

variable.To calculate the area of the circle, we use the formula

`area = PI * radius * radius`

, where`PI`

is a constant defined with the value of 3.14159.Finally, the program displays the calculated area of the circle using

`printf`

with the`%f`

format specifier for floating-point values. The`.2`

in`%.2f`

specifies that the area should be displayed with two decimal places.