Open the Arduino software and paste the Arduino code (the text in the box near the bottom of the post) into a new sketch. Click Sketch > Verify / Compile to make sure the code is properly in there.

If you are familiar with Eclipse chime in with other capabilities in the comments. ... That means I’d expect a source code for ab Arduino project to be like 100 kB at most.

Arduino's language is based on C++, which is one of the most popular programming languages used by developers today. C++ is geared towards larger apps and is responsible for some of the code ...

Some of the first steps toward working with Arduino is understanding how to write code for it. The good news is that it's made with beginners in mind.