import glob

def chapter1():
  print('Python output chapter 1\n'); 
  glob.init_glob()
  prob_01()
  prob_02()
  prob_03()

def prob_01():
  print('Problem 1\n')

  print('What is your height in feet?')
  with open('pb01.in') as f:
    my_height_feet = float(f.read())
  my_height_meters = glob.cvt_feet_to_meters(my_height_feet) # convert units
  s = 'my_height_feet = ' + repr(my_height_feet)
  print(s)
  s = 'my_height_meters = ' + repr(my_height_meters)
  print(s)

def prob_02():
  diff_meters = 100.0 - glob.cvt_feet_to_meters(100.0 * 3.0)
  diff_yards = glob.cvt_meters_to_feet(diff_meters) / 3.0

  print("Problem 2\n")
  s = '100 meters is longer than 100 yards by ' + repr(diff_meters) + 'meters or ' + repr(diff_yards) + ' yards'
  print(s)

def prob_03():
  print('Problem 3\n')
  s = '300 kilometers = ' + repr(300.0 * glob.miles_per_kilometer) + ' miles'
  print(s)

chapter1()