Question

I’m trying to do Serial.println() within a class in the Arduino IDE. However, the compiler is saying that Serial was not declared in this scope. Here is the code:

Code in Menu.h

class Menu
{
    public:
        int options[4];

        void test() {
          Serial.println("here");
        }

    private:

};

Code in main file:

#include "Menu.h"

Menu menu;

void setup() {
    Serial.begin(9600);
    menu.test();
}

void loop() {
}

Answer 1

The right #include is probably added automatically by Arduino to your .pde. Try #include <WProgram.h> in the top of your Menu.h.