write a program to print the area of circle its radius to be input by the user

//write a program to print the area of circle its radius to be input by the user.

#include<stdio.h>

int main()

{

    int r;

    float area;

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

    scanf("%d",&r);

    area=3.14*r*r;

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

    return 0;

}