#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int hour,minute,second;
unsigned long time,retime;
void setup() {
  pinMode(9,INPUT);
  pinMode(8,INPUT);
  pinMode(7,INPUT);
  lcd.begin(16, 2);
}

void loop() {
  time = millis();
  seclock();
  if(time - retime >= 1000)
  {
    retime = time;
    second = second + 1;
  }
  cclock();
  screen();
}
void cclock()
{
  if(second >= 60)
  {
    second = 0;
    minute = minute + 1;
    lcd.clear();
  }
  if(minute >= 60)
  {
    minute = 0;
    hour = hour + 1;
    lcd.clear();
  }
  if(hour >= 24)
  {
    hour = 0;
    lcd.clear();
  }
}
void screen()
{
  lcd.setCursor(0,0);
  lcd.print("  xStoPiTn0Wx");
  lcd.setCursor(2,1);
  lcd.print(hour);
  lcd.print(" : ");
  lcd.print(minute);
  lcd.print(" : ");
  lcd.print(second);
}
void seclock()
{
  if (digitalRead(9) == LOW)
  { 
    while(digitalRead(9) == LOW);
    hour++; 
  }
  if (digitalRead(8) == LOW)
  { 
    while(digitalRead(8) == LOW);
    minute++; 
  }
  if (digitalRead(7) == LOW)
  { 
    while(digitalRead(7) == LOW);
    second++; 
  }
}