# L-19 MCS 260 Wed 10 Oct 2007 : dialogue
#
# The module dialogue defines the dialogue
# with the user: show questions, prompt for
# a choice, show the outcome and tally.

import quand

def show_question(q,L):
   "displays the questions and the answers\
\non input is the number q of the question\
\nand the list L of answers"
   print quand.questions[q]
   choice = 1
   for answer in L:
      p = '%d' % choice + '. '
      p = p + quand.answers[q][answer]
      print p
      choice = choice + 1

def prompt_choice(n):
   "asks the user for a choice\
\nwhere n is the number of choices"
   m = 'type a number between 1'
   m = m + ' and %d : ' % n
   while True:
      c = raw_input(m)
      if int(c) > 0 and int(c) <= n: break
      print 'please try again'
   return int(c)

def show_outcome(b):
   "reports outcome to user\
\nwhere b is True or False"
   if b:
      print 'this is the correct answer'
   else:
      print 'wrong, please try again'

def show_tally(t):
   "shows final tally, t is list"
   s = '#correct : %d' % t[1]
   s += ' #wrong : %d' % t[0]
   f = 100.0*t[1]/sum(t)
   s += ' -> %.2f%%' % f
   print s