Case16. Given an integer in the range 20-69, determining the age (in years). Output a string-description of the specified age, for example: 20 - "twenty years", 32 - "thirty two years", 41 - "forty one years."

Solution in Python 3:

import random

desyatki = {
    20 : 'twenty',
    30 : 'thirty',
    40 : 'forty',
    50 : 'fifty',
    60 : 'sixty'
}

edinici  = {
    1 : 'one',
    2 : 'two',
    3 : 'three',
    4 : 'four',
    5 : 'five',
    6 : 'six',
    7 : 'seven',
    8 : 'eight',
    9 : 'nine'
}

try:
    N = random.randrange(20,70)
    #N = 60
    print("N = ",N)
    r = N%10
    print("r = ",r)
    if r == 0:
        print("{0} years".format(desyatki[N]))
    else:
        q = int(N/10)*10
        print("q = ",q)
        print("{0} {1} years".format(desyatki[q], edinici[r]))

except KeyError as e:
    print('Error')