Getting started with arduino – LED – With Button control

You can also use this code to setup an LED with a button switch with a pull up resistor, this could preferably be with the next step after setting up the intial LED controller

int buttonState = 0; // variable for reading the pushbutton status

void setup()
{
    // initialize the LED pin as an output:
    pinMode(13, OUTPUT); // You can set it just using its number
    // initialize the pushbutton pin as an input:
    pinMode(2, INPUT);
}

void loop()
{
    // read the state of the pushbutton value:
    buttonState = DigitalRead(2);

    // check if the pushbutton is pressed.
    // If it's not, the buttonState is HIGH : if (buttonState == HIGH)
    {
        // turn LED off:
        digitalWrite(13, LOW);
    }
    else
    {
        // turn LED off:
        digitalWrite(13, HIGH);
    }
}

if you want to reproduce, please indicate the source:
Getting started with arduino – LED – With Button control - CodeDay