int ledRPin = 3, ledGPin = 5, ledBPin = 6; //Red LED 3, Green LED 5, Blue LED 6
int sw1Pin = 7, sw2Pin = 8, sw3Pin = 9;
int ledRStatus = HIGH;
int ledGStatus = HIGH;
int ledBStatus = HIGH;
int sw1BeforeValue = HIGH;
int sw2BeforeValue = HIGH;
int sw3BeforeValue = HIGH;

void setup() {
  // put your setup code here, to run once:
  pinMode(ledRPin, OUTPUT);
  pinMode(ledGPin, OUTPUT);
  pinMode(ledBPin, OUTPUT);
  digitalWrite(ledRPin, HIGH);
  digitalWrite(ledGPin, HIGH);
  digitalWrite(ledBPin, HIGH);
  pinMode(sw1Pin, INPUT);
  pinMode(sw2Pin, INPUT);
  pinMode(sw3Pin, INPUT);
  Serial.begin(115200);
  Serial.print("Hello Arduino\n");

}

void loop() {
  // put your main code here, to run repeatedly:
  int sw1Value, sw2Value, sw3Value;
  sw1Value = digitalRead(sw1Pin);
  sw2Value = digitalRead(sw2Pin);
  sw3Value = digitalRead(sw3Pin);
  sw1Toggle(sw1Value);
  sw2Toggle(sw2Value);
  sw3Toggle(sw3Value);
  digitalWrite(ledRPin, ledRStatus);
  digitalWrite(ledGPin, ledGStatus);
  digitalWrite(ledBPin, ledBStatus);
}
////////////////////////////////////////////////////////
int sw1Toggle(int swValue) {
  if (swValue == LOW) {
    if (sw1BeforeValue == HIGH) {
      //Serial.println("LED ON");
      ledRStatus = !ledRStatus;
      sw1BeforeValue = LOW;
      return true;
    }
    else {
      sw1BeforeValue = LOW;
      return false;
    }
  }
  else {
    sw1BeforeValue = HIGH;
    return false;
  }
}
////////////////////////////////////////////////////////
int sw2Toggle(int swValue) {
  if (swValue == LOW) {
    if (sw2BeforeValue == HIGH) {
      //Serial.println("LED ON");
      ledGStatus = !ledGStatus;
      sw2BeforeValue = LOW;
      return true;
    }
    else {
      sw2BeforeValue = LOW;
      return false;
    }
  }
  else {
    sw2BeforeValue = HIGH;
    return false;
  }
}
////////////////////////////////////////////////////////
int sw3Toggle(int swValue) {
  if (swValue == LOW) {
    if (sw3BeforeValue == HIGH) {
      //Serial.println("LED ON");
      ledBStatus = !ledBStatus;
      sw3BeforeValue = LOW;
      return true;
    }
    else {
      sw3BeforeValue = LOW;
      return false;
    }
  }
  else {
    sw3BeforeValue = HIGH;
    return false;
  }
}