Here's a small program that I made in Python. The code was inspired from Mike Dane. (He's really good, go check him out too at MikeDane.com) My program allows the user to replace a letter to another specific one in a given sentence..
Please do upvote and check out some of my other cool stuff..
@Foster_Bryant Not as it is, but If you want to develop further and may be import this file into some other program, or make small modules part of a big program later etc. then you're gonna realise that you will need it. However, it's a choice of a developer, I think It's a good practice to run the functions inside the main function, some programming language enforce it strictly, Python does not. Still, I think it's a good practice.