Using a variable in a different function in MATLAB

Hello everyone;

I coded a function which you put a word inside and encrypts it. Now I am coding an another fucntion which decrpyts it but since these functions are not in the same edior I can not use the same word it does not recognizes it

function encStr = encrypt(s,key)
prompt='Enter message to be encrypted: ';
s=input(prompt,'s');
key=input('Enter the key: ');
a=char(s+key);

This is a part of my first function.

Thanks!

[Stephen23]

The simplest and best solution is to pass the data in an output argument.

https://www.mathworks.com/help/matlab/matlab_prog/share-data-between-workspaces.html