#include <LiquidCrystal.h>

// initialize the library by associating any needed LCD interface pin
// with the arduino pin number it is connected to
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

// INPUT: Potentiometer should be connected to 5V and GND
int potPin = A0; // Potentiometer output connected to analog pin 3
int potVal = 0; // Variable to store the input from the potentiometer
int x = 3;// Math variable

void setup() {
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
   Serial.begin(9600);           //  setup serial
  
}

void loop() {
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
  potVal = analogRead(potPin);
  int y = sq(x);// Math equation
  lcd.setCursor(0, 1);
  lcd.print(potVal);
  Serial.println(x);// Print Math variable
  Serial.println(y);// Print math result
  delay(1000);
  lcd.clear();

}