#include <stdio.h>

int main(void)
{
        float radius = 0.0f;            /* The radius of the table      */
        float diameter = 0.0f;          /* The diameter of the table    */
        float circumference = 0.0f;     /* The circumference of the table*/
        float area = 0.0f;              /* The area of a circle         */
        float Pi = 3.14159265f;         /* PI                           */

        printf("Input the diameter of the table:");
        scanf("%f", &diameter);         /* Read the diameter from the keyboard */
        radius = diameter/2.0f;         /* Calculate the radius         */
        circumference = 2.0f*Pi*radius; /* Calculate the circumference  */
        area = Pi*radius*radius;        /* Calculate the area           */
        printf("\nThe circumference is %.2f", circumference);
        printf("\nThe area is %.2f\n", area);
        return 0;
}