/*
 * This program computes the area and circumference of a circle
 * given the diameter
 *     Input:  Diameter of the circle
 *     Output: Area and Circumference of the circle
 */

#include <iostream.h>
#include <conio.h>

void main(void)
{
    float diameter, area, circumference, radius;
    float pi =  3.14159;

    // Get diameter of the circle from the user
    cout << "Enter diameter: ";
    cin >> diameter;

    // Calculate Radius
    radius = diameter / 2;

    // Calculate Area
    area = pi * radius * radius;

    // Calculate circumference
    circumference = 2 * pi * radius;

    /* Output results */
    cout << "Diameter:     " << diameter << endl;
    cout << "Area:         " << area << endl;
    cout << "Circumference " << circumference << endl;

    getch();
}