int swt = 3;
int leftled = 2;
int rightled = 4; //declares the pins being used.
void setup()
{
  pinMode(3, INPUT);
  pinMode(2, OUTPUT);
  pinMode(4, OUTPUT); //assigns the pins as inputs/outputs.
  Serial.begin(9600); // begins communication with the serial monitor.
}

void loop()
Serial.print("Status:");
{
    
    if(digitalRead(swt) == 1)  //declares a condition that if the switch is pressed.
    {
      digitalWrite(leftled, HIGH); // left led is on when switch is pressed
      Serial.println("LEFT ON");  // sends a message to serial monitor to say the led is on.
      delay(400);                 // wait .4 sec.
      digitalWrite(leftled, LOW);
      digitalWrite(rightled, HIGH);
      Serial.print("Status:");
      Serial.println("RIGHT ON");
      delay(400);
      digitalWrite(rightled, LOW);   
      
    }
  else{
       digitalWrite(leftled, LOW); // if switch is not pressed led is off.
       digitalWrite(rightled, LOW);
       Serial.println("OFF");
       delay(1000);
  }
   
}