int switchState = 0;
// declares a variable named switchstate with an initial value of 0 (off) and type integer

void setup() {
  // put your setup code here, to run once:
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(2, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
switchState = digitalRead(2);
//will read the voltage on pin 2 and store it digitally ("LOW" or "HIGH") in variable switchstate
if (switchState == LOW) {
  //button not pressed
  delay (250);
  digitalWrite(3, HIGH); //green LED
  delay (250);
  digitalWrite(4, HIGH); //red LED 1
  delay (250);
  digitalWrite(4, LOW); //red LED 1
  delay (250);
  digitalWrite(5, LOW); //red LED 2
  //will write digitally on the respective pin, aka will send voltage (HIGH) or not (LOW)
}
else {//button pressed
  digitalWrite(3, LOW); //green LED
  digitalWrite(4, LOW); //red LED 1
  digitalWrite(5, HIGH); //red LED 2
  //delay(10000);
}
} //restart of the loop