Write a program using Dictionary and Text files to store roman numbers and find their equivalents.

Q. Write a program using Dictionary and Text files to store roman numbers and find their equivalents.

Answer =

 

import pickle

numerals = {1:'I', 4:'IV', 5:'V', 9:'IX', 10:'X', 40: 'XL', 50: 'L', 90: 'XC', 100: 'C', 400: 'CD', 500:'D',900: 'CM', 1000:'M'}

file1 = open ("roman.log", "wb")
pickle.dump (numerals, file1)
file1.close()
file2 = open ("roman.log", "rb")
num = pickle.load (file2)
file2.close()
n = 0
while n != -1 :
  print ("Enter 1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000: ")
  print ("or enter -1 to exit")
  n = int(input ("Enter number: "))
  if n != -1 :
    print ("Equivalent roman number of this numeral is: ", num[n])
  else :
    print ("Thank You")

Output :-

Enter 1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000:
or enter -1 to exit
Enter number: 9
Equivalent roman number of this numeral is:  IX
Enter 1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000:
or enter -1 to exit
Enter number: 4
Equivalent roman number of this numeral is:  IV
Enter 1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000:
or enter -1 to exit
Enter number: 50
Equivalent roman number of this numeral is:  L
Enter 1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000:
or enter -1 to exit
Enter number: 100
Equivalent roman number of this numeral is:  C
Enter 1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000:
or enter -1 to exit
Enter number: 1000
Equivalent roman number of this numeral is:  M
Enter 1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000:
or enter -1 to exit
Enter number: -1
Thank You
>>> 

In roman.log file :

€•]       }”(K
Œ
I”KŒIV”KŒ
V”K    ŒIX”K
Œ
X”K(ŒXL”K2Œ
L”KZŒXC”KdŒ
C”M
ŒCD”Mô
Œ
D”M„ŒCM”MèŒ
M”u.