Question

Arduino files end in?
1) .ide
2) .ino
3) .sketch
4) .arduino

Answer 1

Arduino files end with the file extension .ino.

Step-by-step explanation:

The correct answer is .ino.

Arduino files end with the file extension .ino. The Arduino Integrated Development Environment (IDE) uses this extension to identify and open the files.

For example, if you create a new program on Arduino and save it, the file will be saved as program_name.ino.