39 lines
1.2 KiB
Python
39 lines
1.2 KiB
Python
# Prompt user to enter a key number between 1 and 26
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# output the original string and encrypted string
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print(r"""
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_________
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\_ ___ \_____ ____ ___________ _______
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/ \ \/\__ \ _/ __ \ / ___/\__ \\_ __ \
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\ \____/ __ \\ ___/ \___ \ / __ \| | \/
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\______ (____ /\___ >____ >(____ /__|
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\/ \/ \/ \/ \/
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""")
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original = """
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If he had anything confidential to say,
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he wrote it in cipher,
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that is, by so changing the order of the letters of the alphabet,
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that not a word could be made out.
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"""
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key = int(input("Please enter a key number between 1 and 26: "))
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if key < 1 or key > 26:
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print("Please enter a key number between 1 and 26")
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exit()
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encrypted = ""
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for i in range(len(original)):
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if original[i].isalpha():
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if original[i].isupper():
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encrypted += chr((ord(original[i].lower()) - ord('a') + key) % 26 + ord('A'))
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else:
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encrypted += chr((ord(original[i].lower()) - ord('a') + key) % 26 + ord('a'))
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else:
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encrypted += original[i]
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print(f"The original string is: {original}")
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print(f"\nThe encrypted string is: {encrypted}")
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