#include <LiquidCrystal.h>

const int rs = 12, en = 11, d4 = 10, d5 = 9, d6 = 8, d7 = 7;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

int input = 0;
unsigned long time; 
long int seconds = 0; 
int minutes = 0; 
int hours = 0; 
int set = 0; 
int reset = 0;

void setup()
{
  Serial.begin(9600);
  lcd.begin(16, 2);
  pinMode(6, INPUT);
  lcd.setCursor(3, 0);
  lcd.print("Count Time");
  lcd.setCursor(4, 1);
  lcd.print("HH:MM:SS");
}

void loop() 
{
  lcd.setCursor(4, 1);
  input = digitalRead(6);
  if(input == HIGH)
  {
    setClock();
    if(hours<10)
    {
      lcd.print("0");
      lcd.print(hours);
    }
    else
    {
      lcd.print(hours);
    }
    lcd.print(":");
    if(minutes<10)
    {
      lcd.print("0");
      lcd.print(minutes);
    }
    else
    {
      lcd.print(minutes); 
    }
    lcd.print(":");
    if(seconds<10)
    {
      lcd.print("0");
      lcd.print(seconds);
    }
    else
    {
      lcd.print(seconds); 
    }
  }
}

void setClock() 
{
  seconds++;
  delay(1000);
  if (seconds > 59)
  {
    seconds = 0;
    minutes++;
  }
  if (minutes > 59)
  {
    hours++;
    minutes = 0;
  }
  if(hours > 23)
  {
    hours = 0;
  } 
}