hi i'm having a problem with this question: "A simple code can be developed by replacing each character by another character that is a fixed number of positions away in the collating sequence. For example, if each charcater is replaced by the character that is two characters to the right, then the letter 'a' is replaced by the letter 'c', the letter 'b' is replaced by the letter 'd', and so on. Write a program that reads the text in a file, and then generates a new file that contains the coded text using this scheme. Do not change the newline characters or the EOF character."
**I'm clueless and any help would be greatly appreciated to understand how to do this.