CASIO fx-CG SDK
GitHub
You can download precompiled packages from the releases page.
Usage
If you're using Windows you can get a precompiled SDK package that includes everything you need to get started.
PC
Windows 7, Windows 8.x, Windows 10, ...
SDK Packagess
The SDK packages provide everything you need to build programs, including a compiler. You should use these unless you know you want to do something different. learn more
Source Code
The source code for building and compiling for Linux, PC, Mac, etc...