C language program to find area of circle

//program to find area of circle

#include<stdio.h>

#include<conio.h>

void main()

{            int i,r;

            float p;

            clrscr();

            printf("enter radius of circle:-");

            scanf("%d",&r);

            p=3.1416;

            i=p*r*r;

            printf("area is %d",i);

            getch();

}