c program to find area and circumfearence of a circle

 write a c program to find area and circumfearence  of a circle
/* c program to find area and circumfearence  of a circle*/

/* author: sai      date:1-4-2015 */

#incl#include<stdio.h>
int main()

{
   int radius;
   float PI = 3.14,area,ci;

   printf("\nEnter radius of circle");
   scanf("%d", &radius);

   area = PI * radius * radius;
   printf("Area of circle %f\n",area);

   ci = 2 * PI * radius;
   printf("Circumference %f\n",ci);
 }