Although Arduino's programming language is based on C++, you won't be able to use all of its commands. But, you can still use objects in Arduino's IDE, which are a fundamental aspect of C++.

To program the software architecture of the Arduino board's control program, such as Portenta Machine Control and Arduino Opta, you will need to use IEC-61131-3 languages.

The software, also called Arduino, is where you program your own code (or sketches, as the Arduino software refers to them). For Arduino beginners like us, this is where you paste the code from ...