#include<LiquidCrystal.h>
LiquidCrystal lcd(PB0,PB1,PB6,PB3,PB4,PB5);
int buttonstate = 0;
void setup() {
 lcd.begin(16,2);
  pinMode(PA0,INPUT);
  pinMode(PC13,OUTPUT);

}

void loop() {
  buttonstate = digitalRead(PA0);
  if(buttonstate==HIGH){
    digitalWrite(PC13,HIGH);
    lcd.setCursor(0,0);
    lcd.print("LED IS ON");
    delay(1000);
  }
    else {
      digitalWrite(PC13,LOW);
      lcd.setCursor(0,0);
      lcd.print("LED IS OFF");
      delay(1000);
    }
  }