Chapter 3
Building a Calculator App

Whew! You’ve learned a lot about the tools available to you in Flutter. Shall we put them to use? As promised, this chapter will focus on building a calculator app, using some of the structures and elements we saw throughout the previous chapter.

We’ll start writing our app by showing you how to go from an empty file to a working Flutter app.

This time, create a Flutter project using the flutter create appname command or your IDE of choice, but this time delete everything inside the generated main.dart.