Ruby code not executing even with code = 0

Here is a link to a google drive with a .docx folder to all my code. Also directions of my assignment I had to create for any confusion on what im making. I am making a water bill. I coded everything but it doesnt execute. Even thoe it has the code=0 prompt in my terminal. I am trying to get it to print the information.

link

I tried to create a main function. Didnt work. Tried to call my function didnt work. Any ideas? again I could be a big goof and messed up my code.