File encryption is the science of writing the contents of a file in a secret code. For this assignment you will design a program that opens a file and encrypts its contents. Assume the file that you are encrypting contains a list of strings.

The program should open the file and read its contents, one string at a time. As the program reads a string from the file, it substitutes each character of the string for an alternate character. It then writes the encoded string out to a second file. When the program is finished, the second file will be a version of the first file, but written in a secret code.