const int buttonPin1 = 2; 
const int buttonPin2 = 3; 
const int buttonPin3 = 4; 

const int ledPin1 = 13; 
const int ledPin2 = 11; 
const int ledPin3 = 12; 

int buttonState1 = 0; 
int buttonState2 = 0; 
int buttonState3 = 0; 

bool ledState1 = false; 
bool ledState2 = false; 
bool ledState3 = false; 

void setup() {
  Serial.begin(115200);
  pinMode(buttonPin1, INPUT_PULLUP);
  pinMode(buttonPin2, INPUT_PULLUP);
  pinMode(buttonPin3, INPUT_PULLUP);
  
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);

}

void loop() {

  buttonState1 = digitalRead(buttonPin1);
  
  if (buttonState1 == LOW && !ledState1) {
    
    ledState1 = true; 
    digitalWrite(ledPin1, HIGH); 
    delay(250); 

  } else if (buttonState1 == LOW && ledState1) {
    ledState1 = false;
    digitalWrite(ledPin1, LOW); 
    delay(250); 
  }
  

  
  buttonState2 = digitalRead(buttonPin2);
  
  if (buttonState2 == LOW && !ledState2) {
    ledState2 = true; 
    digitalWrite(ledPin2, HIGH); 
    delay(250); 

  } else if (buttonState2 == LOW && ledState2) {
    ledState2 = false; 
    digitalWrite(ledPin2, LOW); 
    delay(250);
  }
  

  buttonState3 = digitalRead(buttonPin3);
  
  if (buttonState3 == LOW && !ledState3) {
    ledState3 = true; 
    digitalWrite(ledPin3, HIGH); 
    delay(250); 
  } 
  
  else if (buttonState3 == LOW && ledState3) {
    ledState3 = false; 
    digitalWrite(ledPin3, LOW); 
    delay(250); 
  }

}

/*
  int buttonState = digitalRead(buttonPin);
  
  if (buttonState == LOW) {
    ledState = !ledState; 
    digitalWrite(ledPin, ledState); 
    while(digitalRead(buttonPin) == LOW) delay(50); 
  } 

*/