const int switchPin = 5; //the switch connect to pin 12

const int ledPin = 3;//the led connect to pin 6

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

void setup()
{
  pinMode(switchPin, INPUT); //initialize thebuttonPin as input

  pinMode(ledPin, OUTPUT); //initialize the led pin as output
}

void loop()
{
  //read the state of the switch value

  switchState = digitalRead(switchPin);

  if (switchState == HIGH ) //if it is,the state is HIGH

  {
  digitalWrite(ledPin, HIGH); //turn the led on
  }

else
  {
  digitalWrite(ledPin, LOW); //turn the led off
  }

}