Circumference of Circle in C

#include <stdio.h>
#include <conio.h>

void main() {
	float r, a, c;
	clrscr();
	printf("Enter the radius of circle: ");
	scanf("%f", &r);
	a =3.14 *r *r;
	printf("Area of circle : %.2f\n", a);
	c=2*3.14*r;
	printf("circumference of circle : %.2f", c);
	getch();
}

1. Start
2. Declare variables:
- `r` (float) for radius
- `a` (float) for area
- `c` (float) for circumference
3. Prompt user to enter the radius of the circle
4. Read the input value for radius `r`
5. Calculate the area:
\( a = \pi \times r \times r \)
(Use \(\pi = 3.14\))
6. Calculate the circumference:
\( c = 2 \times \pi \times r \)
(Use \(\pi = 3.14\))
7. Display the area with two decimal places
8. Display the circumference with two decimal places
9. End