Program that accepts radius of a circle and print its area

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

void main()
{
float r,area;

clrscr();
printf("\n Enter Radius of circle : ");
scanf("%f",&r);
area=3.14*r*r;
printf("\n Area of Circle is : %f",area);
getch();
}



                                                       Output