Question

Give the return datatype and name of the two functions which must appear in every Arduino sketch.

1) void loop(); void setup()
2) void delay(); void loop()
3) void setup(); void serial()
4) void serial(); void delay()

Answer 1

The two functions that must appear in every Arduino sketch are void loop() and void setup(). The void loop() function is the main function in an Arduino sketch that is executed repeatedly. The void setup() function is called only once at the beginning of the sketch.

Step-by-step explanation:

The two functions that must appear in every Arduino sketch are void loop() and void setup(). The void loop() function is the main function in an Arduino sketch that is executed repeatedly. It controls the code that runs over and over again, performing any necessary tasks.

The void setup() function is called only once at the beginning of the sketch. It is used for initializing variables, setting pin modes, and configuring any devices or libraries that are being used.