/* A program to find the circumference of a circle of radius 2 meters. */

#include <stdio.h>

main () {
    float radius, circumference;
    radius = 2.0;   /* meters */
    circumference = 2 * 3.1415926 * radius;
    printf(
        "The circumference of a 2 meter radius circle is %f meters.\n",
        circumference
    );
}