caesar-cipher

I am currently writing a Caesar Cipher program in C# for my assignment and I am having a problem. I am approaching this task using an array where I store the whole alphabet and I declare a shift variable which is defined by character index in the array - the iteration of a for loop. The shift calculation is done in a foreach loop, that fetches a character from a string that is read from a text file. Foreach loop is contained within a for loop that iterates to output every possible shift. However, the problem is that when I try to access the character in an array by a value of my shift variable

i did caesar cipher code by java it runs but doesnt encrypt anything after user enter the key ! here is my code public class CaesarCipher { public static final String ALPHABET = "abcdefghijklmnopqrstuvwxyz"; public static String encrypt(String plainText, int shiftKey) { plainText = plainText.toLowerCase(); String cipherText = ""; for (int i = 0; i < plainText.length(); i++) { int charPosition = ALPHABET.indexOf(plainText.charAt(i)); int keyVal = (shiftKey + charPosition) % 26; char replaceVal = ALPHABET.charAt(keyVal); cipherText += replaceVal; } return cipherText; } public static String

I am trying to implement a Caesar cipher. I have tried to return message in the function, but I get an error message (outside function). Can anyone help, please? Thanks in advance cat cate catec catecv message = input("type message ") shift = int(input("Enter number to code ")) message = message.lower() #convets to lower case print (message) for a in message: if a in "abcdefghijklmnopqrstuvwxyz": number = ord(a) number += shift if number > ord("z"): number -= 26 elif number < ord("a"): number += 26 message = message + (chr ( number)) print (message) jfs Here's Python 3 Caesar cipher