Write C Program to find area and circumference of circle.

#include<stdio.h>

main()
{
    int rad;
    float PI=3.14,area,ci;
    printf("\nEnter radius of circle: ");
    scanf("%d",&rad);
    area = PI * rad * rad;
    printf("\nArea of circle : %f ",area);
    ci = 2 * PI * rad;
    printf("\nCircumference : %f ",ci);   
}