// Define pins for LEDs
const int ledPins[] = {8, 9, 10, 11};   // LED pins
const int buttons[] = {1, 2, 3, 4};

void setup() {
  // Initialize the LEDs and start Serial communication
  Serial.begin(115200);
  for (int i = 0; i < 4; i++) {
    pinMode(ledPins[i], OUTPUT);
    pinMode(buttons[i], INPUT_PULLUP); 
  }
}

void loop() {
  // Check if data has been sent through Serial
  for (i = 0; i < 4; i++){
    if (Serial.available() > 0) {
    int button = Serial.parseInt();  // Read user input
  }
  if (button == 1){
    digitalWrite(8, HIGH);
  }
  else if (button == 01){
    digitalWrite(8, LOW);
  };
  if (1 == LOW && lastButtonState == HIGH) {
    ledState = !ledState; // Toggle the LED state
    digitalWrite(ledPin, ledState ? HIGH : LOW);
  }
  }



}

// A program to use 4 different buttons to turn on and off 4 different LEDs

const int buttonPins[] = {2, 3, 4, 5}; 
const int ledPins[] = {8, 9, 10, 11};   

void setup() {

  for (int i = 0; i < 4; i++) {
    pinMode(ledPins[i], OUTPUT);
    pinMode(buttonPins[i], INPUT_PULLUP);  
  }
}

void loop() {
  
  for (int i = 0; i < 4; i++) {
    if (digitalRead(buttonPins[i]) == LOW) {
      digitalWrite(ledPins[i], HIGH);  
    } else {
      digitalWrite(ledPins[i], LOW);  
    }
  }
}

//This is for the second assignment.