//YWROBOT
//Compatible with the Arduino IDE 1.0
//Library version:1.1
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display
int bpplus = 11 ;   
int bpmoins = 10 ;   
int bp = 9 ;   
unsigned long interval,interval1=5000,
unsigned long currentTime=0;
unsigned long previousTime=0;

int x ;
int a;
/*class Opperation {
public :
  int a ;
  int getc(){
    return c ;
  }
 

  void mul (int _a );
    private : 
  int c;
  };
     void Opperation::mul (int _a );
  {
    c=_a;
  }*/

void setup()

{
   pinMode(bp,INPUT) ;    
 pinMode(bpplus,INPUT) ;    
 pinMode(bpmoins,INPUT) ; 
 
Serial.begin(9600);


}


void loop()
{
  currentTime=millis();

  lcd.init();                      // initialize the lcd
  // Print a message to the LCD.
  lcd.backlight();
  /*lcd.setCursor(3,0);
  lcd.print("Bienvenue");
  lcd.setCursor(3,1);
  lcd.print("en BTS SN");
  delay(5000);*/
   lcd.setCursor(0,0);
  lcd.print(x);
     lcd.setCursor(3,0);
  lcd.print("personnes");
   lcd.setCursor(3,1);
  lcd.print("ont valide");
  delay(5000);

        boolean etatbp = digitalRead(bp) ;
       boolean etat = digitalRead(bpplus) ;
   if (etatbp==HIGH)
 {
   a++;
 } 

 
 if (etat==HIGH)
 {
   a--;
 } 

   boolean ett = digitalRead(bpmoins) ;
   
 if (ett==HIGH)
 {
   x=a;
 } 

}