About Development of Text Based Calculator

Hi folks! I have learned a fact that is related to do all mathematical(ok, just four basic ones) process according to your request. The first version of my text based calculator was very simple and ordinary a bit. You had to use the commands step by step for doing any mathematical process. You can analyze the codes of that project, and examine the details at the previous post published October 7. Anyway, I have learned "switch case" command to organize the steps to your requirement. But it's being still developed. Hopefully, I'll publish that in a few days. I think I should name the calculator. It's such an easy-work but worth.