C program to calculate area and circumfrances of circle

 //C program to calculate area and circumfrances of circle

#include <stdio.h>

void main()

{

float radius, area, cf;

printf("Enter radius of the circle: \n");

scanf("%f", &radius);

//value of pi is 3.14

area=3.14*radius*radius;

printf("The area of the circle is %f", area);

cf=2*3.14*radius;

printf("\nThe Circumfrances of circle is %f", cf);

}