import java.lang.*;
import java.io.*;
import java.util.*;

public class Pb01
{

    public static void main(String args[]) 
    {
	System.out.println("Java output");
	try
	    {
		Glob.ifile = new BufferedReader(new FileReader("pb01.in"));
	    }
	catch (IOException e)
	    {
		System.err.printf("Can't open %s\n", "pb01.in");
	    }
	
	prob_01();
	prob_02();
       	prob_03(); 
	try {
	    Glob.ifile.close();
	}
	catch (IOException e)
	    {
		System.err.printf("Can't close %s\n", "init.r");
	    }
    }
    
static void prob_01()
    {
	double my_height_meters;
       	Double my_height_feet;
	String line;
	
	System.out.println("Problem 1");
	try {
	    line = Glob.ifile.readLine();
	}
	catch (IOException e)
	    {
		line = new String("0.0");
		System.err.printf("Can't read %s\n", "init.r");
	    }
	
	my_height_feet = new Double(line);
	my_height_meters = cvt_feet_to_meters(my_height_feet); // convert units
	System.out.printf("My height in feet = %8.4f\n" , my_height_feet); 
	System.out.printf("My_height_meters = %8.4f\n", my_height_meters);
    }
    
    
    static void prob_02()
    {
	double diff_meters;
	double diff_yards;
	
	diff_meters = 100.0 - cvt_feet_to_meters(100.0 * 3.0);
	diff_yards = cvt_meters_to_feet(diff_meters) / 3.0;
	
	System.out.println("Problem 2");
	System.out.printf("100 meters is longer than 100 yards by %8.4f meters or %8.4f yards\n",diff_meters, diff_yards);
    }
    
    static void prob_03()
    {
	System.out.println("Problem 3");
	System.out.printf("300 kilometers = %8.4f miles\n", 300.0 * Glob.miles_per_kilometer);
    }
    
    static double cvt_feet_to_meters(double feet)
    {
	double meters;
	
	meters = feet * Glob.meter_per_foot;
	return meters;
    }
    
    static double cvt_meters_to_feet(double meters)
    {
	double feet;
	
	feet = meters * Glob.feet_per_meter;
	return feet;
    }
}