  pinMode(btn1, INPUT);
  pinMode(btn2, INPUT);
  pinMode(btn3, INPUT);
- pinMode(led0, INPUT);
- pinMode(led1, INPUT);
- pinMode(led2, INPUT);
- pinMode(led3, INPUT);
+ pinMode(led0, OUTPUT);
+ pinMode(led1, OUTPUT);
+ pinMode(led2, OUTPUT);
+ pinMode(led3, OUTPUT);
  
  Serial.println("Starting Program");
  

void loop() {
  // put your main code here, to run repeatedly:
  for (int i = 0; i < 4; i ++) {
    //if (digitalRead(btn[i] == HIGH)) {
    //  digitalWrite(led[i], HIGH);
    //}
    //else {
      digitalWrite(led[i], LOW);
    //}
      
  }
  Serial.print("Button0: ");
  Serial.print(digitalRead(btn0));
  Serial.print("   Button1: ");

  const int btn3 = 8;
  const int led0 = 5;
  const int led1 = 3;
  const int led2 = 4;
  const int led3 = 10;

 int btn[] = {btn0, btn1, btn2, btn3};
