How to generate output for a function placed in a script

I created a function to generate to find the mass of air, given pressure, temperature, volume, and molecular weight and I was wondering how I could generate the output when I publish it to a PDF? Attached is my code, and I would really appreciate some input if anyone can even find a way to make it better!

[Geoff Hayes]

Manik - you didn't attach any code. You must press the Attach File button once you have chosen the file. Also, please describe how you are publishing it to a PDF and what (if any) inputs are required to run your function and so generate some output.