/* Program: Carpet.java
 * Author:  Dr. Blaise Liffick
 * Date:    Sept. 20, 2007
 * Class:   CS 161-01
 * 
 * This program calculates the amount of carpet needed for a
 * rectangular room.
 */

import java.util.Scanner;

public class Carpet {

public static final double INCHES_IN_FOOT = 12.0;
public static final double SQ_FT_IN_YARDS = 9.0;
	
public static void main(String[] args) {

	int lengthFt;	// the input feet part of the length as an integer
	int lengthIn;	// the input inches part of the length as an integer
	int widthFt;	// the input feet part of the width as an integer
	int widthIn;	// the input inches part of the width as an integer
	double area;	// the are of the carpet needed in square yards
		
	Scanner input = new Scanner(System.in);
		
	instructions();
		
        System.out.print("Please enter length feet: ");
        lengthFt = input.nextInt();
	System.out.println();
	System.out.print("Please enter length inches: ");
	lengthIn = input.nextInt();
	System.out.println();
        System.out.print("Please enter width feet: ");
        widthFt = input.nextInt();
	System.out.println();
	System.out.print("Please enter width inches: ");
	widthIn = input.nextInt();

	area = ((lengthFt + lengthIn / INCHES_IN_FOOT) * (widthFt + widthIn / INCHES_IN_FOOT)) /  SQ_FT_IN_YARDS;
	    
	System.out.println();
	System.out.println("For a room that is " + lengthFt + " feet, "
	  	+ lengthIn + " inches by " + widthFt + " feet, "
	    	+ widthIn + " inches, you will need " + area
	    	+ " square yards of carpet.");

}
	
public static void instructions() {
	System.out.println("This program calculates the amount of carpet");
    	System.out.println("needed for a rectangular room.  You will be");
    	System.out.println("asked to enter the length of the room in feet");
    	System.out.println("and inches (as integers), then the width in feet");
    	System.out.println("and inches.  The program will then output the");
    	System.out.println("number of square yards of carpet needed.");
    	System.out.println();
    }
}