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Caesar Cipher in Python

A simple command-line implementation of the Caesar cipher for basic text encryption and decryption, written in Python.

Features

Encrypts messages using a specified shift key.
Decrypts messages using the same shift key.
Handles both uppercase and lowercase letters.
Preserves spaces, numbers, and punctuation.

How to Run

Make sure you have Python 3 installed.
Clone this repository or download the CaesarCipher.py file.
Open your terminal or command prompt.
Navigate to the directory where CaesarCipher.py is located.
Run the script with the following command:
```
python CaesarCipher.py
```

Example Usage

--- Caesar Cipher Program ---

Choose an option:

Encrypt

Decrypt

Exit

1 Enter the message to encrypt: Hello, World! Enter the shift key (a number): 3

Ciphertext: Khoor, Zruog!