Just started with an arduino in my basic electronics class. I have no idea how to write code let alone for an arduino. It should be a pretty basic code scheme im just completely unsure of what im doing. If you have any knowledge on the topic please let me know. I need to write a code for 2 4bit adder for an arduino.

I did a project back in collage with arduino.ı was trying to evaluate the natural frequency of a bar with an accelerometer.Accelerometer was glued below the bar and was connected to arduino microprocessor with cables.I did some coding on Arduino inteface and it was basically C language.Although i just wrote a code to convert the output of the accelerometer, you can look for open-source codes.