// https://wokwi.com/projects/433233127008743425

const byte led1 = 6;

const byte button1 = 3;

void setup() {
  pinMode(led1, OUTPUT);

  pinMode(button1, INPUT_PULLUP);
}

void loop() {
  if (digitalRead(button1) == LOW) {
    digitalWrite(led1, HIGH);
  }
  else digitalWrite(led1, LOW);
}