Area and circumference of circle.c

#include<stdio.h>
   
int main()
{
    int rad;
    float PI = 3.14, area, ci;
    printf("\nEnter the radius of the circle: ");
    scanf("%d", &rad);
    area = PI*rad*rad;
    printf("\n\n\n Area of the circle is: %f ", area);
    ci = 2*PI*rad;
    printf("\n\n\n Circumference of the circle is: %f", ci);
    return 0;
}