#include <LiquidCrystal.h>
#include <math.h>

const int button = 0; // set button pin number 0
const int potentiometer = A0; //set potentiometer pin number to A0
int buttonvalue = 0;
int potentvalue = 0;
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup() {
 
  lcd.begin(16, 2);
  lcd.print("Switch & Analog");
  delay(1000);
  lcd.clear();
  
  Serial.begin(9600); //sets up serial port & data rate to 9600bps
  pinMode(button, INPUT); //sets up button as input

}

void loop() {

  buttonvalue = digitalRead(button); //reads button state
  potentvalue = analogRead(potentiometer); //reads potentiometer state

  //print state values of button and potentiometer
  lcd.setCursor(0,0);
  lcd.print("Switch");
    if (buttonvalue == HIGH) {
      // Display "ON" on LCD
      lcd.setCursor(7, 0);
      lcd.print("ON");
      delay(500); // delay for stability
    } else {
      // Display "OFF" on LCD
      lcd.setCursor(7, 0);
      lcd.print("OFF");
      delay(500); // delay for stability
    }

  lcd.setCursor(0,1);
  lcd.print("V=");
  lcd.print(potentvalue);


}