int led1 = 7;
int btn1 = 6;

int led2 = 5;
int btn2 = 4;

int led3 = 3;
int btn3 = 2;

void setup() {
  // put your setup code here, to run once:
  pinMode(led1, OUTPUT);
  pinMode(btn1, INPUT_PULLUP);
  digitalWrite(led1, LOW);

  pinMode(led2, OUTPUT);
  pinMode(btn2, INPUT_PULLUP);
  digitalWrite(led2, LOW);

  pinMode(led3, OUTPUT);
  pinMode(btn3, INPUT_PULLUP);
  digitalWrite(led3, LOW);
}

void loop() {
  // put your main code here, to run repeatedly:
  
  // if(digitalRead(btn1) == LOW) {
  //   digitalWrite(led1, HIGH); 
  //   delay(1000); 
  //   digitalWrite(led1, LOW); 
  // }

  // if(digitalRead(btn2) == LOW) {
  //   digitalWrite(led2, HIGH);
  //   delay(1510);
  //   digitalWrite(led2, LOW);   
  // }

  // if(digitalRead(btn3) == LOW) {
  //   digitalWrite(led3, HIGH);
  //   delay(1510);
  //   digitalWrite(led3, LOW);   
  // } 

  int btn1Red = digitalRead(btn1);
  switch (btn1Red) {
    case LOW:
      digitalWrite(led1, HIGH);
      delay(650);  
    break;
    case HIGH:
      digitalWrite(led1, LOW);  
    break;
  }

  int btn2Green = digitalRead(btn2);
  switch (btn2Green) {
    case LOW:
      digitalWrite(led2, HIGH);
      delay(650);  
    break;
    case HIGH:
      digitalWrite(led2, LOW);  
    break;
  }
  
  int btn3Blue = digitalRead(btn3);
  switch (btn3Blue) {
    case LOW:
      digitalWrite(led3, HIGH);
      delay(650);  
    break;
    case HIGH:
      digitalWrite(led3, LOW);  
    break;
  }

}