package chapter2;

import java.util.Scanner;

/**
 * Read in the radius of a circle and print out the diameter, circumfrance, and area
 * @author Alicia Maxwell
 */
public class Circle {

	/**
	 * Print information about a circle
	 * @param args command line arguments
	 */
	public static void main(String[] args) 
	{
		//create a Scanner
		Scanner in = new Scanner(System.in);
		
		//get the radius
		System.out.println("Please enter the radius of a circle: ");
		double radius = in.nextDouble(); //r
		
		double diam = radius*2; //2r
		double circ = 2*Math.PI*radius;  //2PIr
		double area = Math.PI*Math.pow(radius,2); //PI*r^2
		
		System.out.printf("Radius: %f, Diameter: %f, Circumference: %f, Area: %f", 
				radius, diam, circ, area);

	}

}