#include <LiquidCrystal.h>

int ledr = 1, btnr = 4;
int ledb = 2, btnb = 5;
int ledg = 3, btng = 6;

int rn =7 ,en =8, d4 =9, d5 =10, d6 =11, d7 =12;
LiquidCrystal lcd(en, en, d4, d5, d6 ,d7);

void setup(){
  pinMode(ledr, OUTPUT);
  pinMode(ledg, OUTPUT);
  pinMode(ledb, OUTPUT);
  
  pinMode(btnr, INPUT_PULLUP);
  pinMode(btnb, INPUT_PULLUP);
  pinMode(btng, INPUT_PULLUP);
  
  lcd.begin(16, 2);
}

void loop(){
  int red_status = digitalRead(btnr);
  int blue_status = digitalRead(btnb);
  int green_status = digitalRead(btng);

  if (red_status == LOW){
    digitalWrite(ledr, HIGH);
    digitalWrite(ledb, LOW);
    digitalWrite(ledg, LOW);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("red is on...");
  }
  else if (blue_status == LOW){
    digitalWrite(ledb, HIGH);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("blue is on...");
  }
  else if (green_status == LOW){
    digitalWrite(ledg, HIGH);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("blugreene is on...");
  }
  else{
    digitalWrite(ledr, LOW);
    digitalWrite(ledb, LOW);
    digitalWrite(ledg, LOW);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("all off..."); 
  }
}