Timer

#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int boutton = 0;

void setup() {
pinMode(,INPUT);
lcd.begin(16, 2);
lcd.setCursor(0, 0);
lcd.print("Appuyer sur");
lcd.setCursor(0, 1);
lcd.print("le bouton !");
}

void loop() {
boutton = digitalRead();
if (boutton == HIGH) {
lcd.clear();

}
}

//code :
//lcd.print("");
//lcd.clear();
//delay();
//lcd.setCursor(0, 0);