Microsoft Word Hw#1

This document contains programs written in C++ to perform encryption and decryption using Caesar cipher, Vigenere cipher, and Playfair cipher. It includes the code for encrypting and decrypting text using Caesar cipher. It also includes code for encrypting and decrypting text using Vigenere cipher's autokey method. There is incomplete code provided for Playfair cipher that distributes the alphabet and key into a 5x5 matrix but does not include the encryption logic.