BILRED-CIPHER

This C++ program implements a simple Caesar cipher for encrypting and decrypting text by shifting letters. It handles uppercase and lowercase, leaving other characters unchanged. Users choose an operation (encrypt/decrypt), enter text, and provide a shift key. The program then outputs the processed text.

Actually, this was an assignment for our Computer Programming Subject. But it looked kinda boring(or maybe not that worth it), so I thought, why not make it stand out by sharing it at my GitHub Page

Screenshot

Features

• Encryption: Encrypt plaintext using a provided shift key.
• Decryption: Decrypt ciphertext using a provided shift key.
• Case Sensitivity: Preserves the case of the original letters.
• Non-alphabetic Characters: Non-alphabetic characters (spaces, punctuation, etc.) are left unchanged.
• User-Friendly Interface: Provides a simple command-line interface for choosing encryption or decryption and entering the text and shift key.

Prerequisites

• A C++ compiler (like g++)
• Git (for cloning the repository)

Cloning the Repository

First, clone the repository to your local machine: open Terminal and type

git clone https://github.com/BilalAhmadKhanKhattak/BILRED-CIPHER
cd BILRED-CIPHER

Secondly, Use VScode or Dev for the compilation and execution, (if you dont want a headache) OR Compile the code using the following command in the terminal(where the .cpp file is located):

```bash
g++ caesar_cipher.cpp -o caesar_cipher
```

Running the Program

1. After successful compilation, run the executable:

   ./CaesarCipherV1ByBilal

2. Enjoy!!!

Usage

1. Choose an operation: Enter 1 for encryption or 2 for decryption.
2. Enter the secret message: Type the text you want to encrypt or decrypt and press Enter.
3. Enter the key: Enter the integer representing the shift value and press Enter.

The program will then output the encrypted or decrypted text.