Chapter 21 // Exercise 11 - Principles & Practice Using C++

In this exercise I am using Visual Studio 2019 and a modified version of the std_lib_facilities header found here.

Chapter 21 // Exercise 11

Provide a GUI interface for entering Orders into files.

Github: https://github.com/l-paz91/principles-practice/tree/master/Chapter%2021/Exercise%2011

I hate that he made this exercise. I also hate the next exercise. I've not used FLTK in so long. I've changed pc's since I last used it and I'm glad I made myself a guide. Having been about 9 months since I last used the fltk solution I had of course forgotten how everything worked. I appreciate though that he makes you do exercises using fltk later on.

I got a bit pedantic with this one but eventually settled on a system that allows you to add purchases and then checkout when you're done. When you checkout it clears everything and allows a new customer to be added. When you quit the program; it prints out all the orders to a text file. Thanks to stringstreams, I didn't need to change any input/output in the actual order file apart from changing ifstream to istream in one place.