/* This is a multi
line comment
it will be ignored
*/

// This is a single comment

int yellow = 13; // yellow is connected to pin 13
int green = 12; // green is connected to pin 12
int red = 11; // red is connected to pin 11

int buttonpin = 7; // button pin is connected to pin 7


void setup() {

  pinMode(yellow, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(red, OUTPUT);

  pinMode(buttonpin, INPUT_PULLUP);

}

void loop() {
  int buttonVa1 = digitalRead(buttonpin);

  if (buttonVa1 == LOW)
  digitalWrite(yellow, HIGH);
  digitalWrite(green, HIGH);
  digitalWrite(red, HIGH);
} //end if
else
{}
  

  digitalWrite(yellow, LOW);
  digitalWrite(green, LOW);
  digitalWrite(red, LOW);
}