//declare variables
const int LED = 16;
const int SW = 17;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(LED,OUTPUT);
  pinMode(SW,INPUT_PULLUP); //Input PULL_UP initial
  digitalWrite(LED,LOW);
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  while(digitalRead(SW)==LOW) // check SWITCH 
  {
    digitalWrite(LED,HIGH);
    Serial.print("LED ON, SWITCH IS PRESSED");
    Serial.println();
    delay(1000);
  }
  digitalWrite(LED,LOW);
  Serial.print("LED OFF, PRESS SWITCH TO TURN ON THE LED");
  Serial.println();
  delay(10); // this speeds up the simulation
}