Using Object-Oriented Programming in Arduino

Personally, I’m not very fond of Arduino because my programming experience with it hasn’t been particularly clean. But recently, I had another opportunity to use Arduino.

I wasn’t thrilled, but rather than just killing time, I figured I might as well learn something new, so I challenged myself to use object-oriented design. Arduino operates on C++, which looked somewhat different from Python or C#, making it a bit unfamiliar, but seeing it work properly was still satisfying. I hope this can serve as a reference if I ever need to use C++ later.

Example Code

#include "Arduino.h"

class MainFunctions
{
  public:
    AddFiveHundreadWon(int Money);
    AddOneHundreadWon(int Money);
    AddFiftyWon(int Money);
};

#include "Arduino.h"
#include "MainFunctions.h"

int MainFunctions::AddFiftyWon(int Money)
{
  Money += 50;
  return Money;
}

int MainFunctions::AddOneHundreadWon(int Money)
{
  Money += 100;
  return Money;
}

int MainFunctions::AddFiveHundreadWon(int Money)
{
  Money += 500;
  return Money;
}

void setup()
{
    /* ... */
}

void loop()
{
    /* ... */
    Money = MainFunctions.AddFiveHundreadWon(Money);
    Money = MainFunctions.AddOneHundreadWon(Money);
    Money = MainFunctions.AddFiftyWon(Money);
    /* ... */
}

This is an example of splitting simple money-adding functionality into individual files. The class declaration file MainFunctions.h declares methods, MainFunctions.cpp defines the declared methods, and Arduino_OOP.ino calls the defined methods.

It works well. Each time the functions are called, AddFiveHundreadWon() adds 500 won, AddOneHundreadWon() adds 100 won, and AddFiftyWon() adds 50 won.