using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp5
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        int s = 0, m = 0, h = 0;

        private void button2_Click(object sender, EventArgs e)
        {
            timer1.Stop();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            timer1.Stop();
            s = 0;
            m = 0;
            h = 0;
            label4.Text = h.ToString();
            label5.Text = m.ToString();
            label6.Text = s.ToString();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            var form2 = new Form2();
            form2.Show();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            timer1.Start();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            s++;

            if (s == 59)
            {
                m++;
                s = 0;
            }

            if (m == 59)
            {
                h++;
                s = 0;
            }

            if (h == 60)
            {
                h = 0;
                m = 0;
                s = 0;
            }

            label6.Text = s.ToString();
            label5.Text = m.ToString();
            label4.Text = h.ToString();
        }
    }
}