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 Calc
{
    public partial class Programm : Form
    {
        public double a;
        public double b;
        public double v;
        public char c;
        public char Operation;
        bool znak = true;
        public Programm()
        {
            InitializeComponent();

            BackColor = Color.Black;
        }

        private void назадToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Form1 newForm = new Form1();
            newForm.Show();
            this.Hide();
        }

        private void button17_Click(object sender, EventArgs e)
        {
            label1.Text += "0";
        }

        private void button11_Click(object sender, EventArgs e)
        {
            label1.Text += "7";
        }

        private void button13_Click(object sender, EventArgs e)
        {
            label1.Text += "1";
        }

        private void button9_Click(object sender, EventArgs e)
        {
            label1.Text += "8";
        }

        private void button15_Click(object sender, EventArgs e)
        {
            label1.Text += "9";
        }

        private void button10_Click(object sender, EventArgs e)
        {
            label1.Text += "6";
        }

        private void button6_Click(object sender, EventArgs e)
        {
            label1.Text += "4";
        }

        private void button14_Click(object sender, EventArgs e)
        {
            label1.Text += "5";
        }

        private void button5_Click(object sender, EventArgs e)
        {
            label1.Text += "2";
        }

        private void button7_Click(object sender, EventArgs e)
        {
            label1.Text += "3";
        }

        private void button1_Click(object sender, EventArgs e)
        {
            label1.Text += "00";
        }

        private void button18_Click(object sender, EventArgs e)
        {
            label1.Text += ",";
        }

        private void button20_Click(object sender, EventArgs e)
        {
            label1.Text = "";
            label2.Text = "";
            label3.Text = "";
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (znak == true)
            {
                label3.Text = "-" + label3.Text;
                znak = false;
            }
            else if (znak == false)
            {
                label3.Text = label3.Text.Replace("-", "");
                znak = true;
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            label3.Text = (a / 100 * double.Parse(label3.Text)).ToString();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            try
            {
                a = Convert.ToDouble(label3.Text);
                c = '/';
                label1.Text = "";
            }
            catch (Exception)
            {
            }
        }

        private void button8_Click(object sender, EventArgs e)
        {
            try
            {
                a = Convert.ToDouble(label3.Text);
                c = '*';
                label1.Text = "";
            }
            catch (Exception)
            {
            }
        }

        private void button12_Click(object sender, EventArgs e)
        {
            try
            {
                a = Convert.ToDouble(label3.Text);
                c = '-';
                label1.Text = "";
            }
            catch (Exception)
            {
            }
        }

        private void button16_Click(object sender, EventArgs e)
        {
            try
            {
                a = Convert.ToDouble(label3.Text);
                c = '+';
                label1.Text = "";
            }
            catch (Exception)
            {
            }
        }

        private void button19_Click(object sender, EventArgs e)
        {
            try
            {
                b = Convert.ToDouble(label3.Text);
                label3.Text = "";
                switch (c)
                {
                    case '+':
                        label3.Text = Convert.ToString(a + b);
                        break;
                    case '-':
                        label3.Text = Convert.ToString(a - b);
                        break;
                    case '*':
                        label3.Text = Convert.ToString(a * b);
                        break;
                    case '/':
                        label3.Text = Convert.ToString(a / b);
                        break;

                }
            }
            catch(Exception)
            {
                MessageBox.Show("Укажите второе значение");
            }
        }


        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void label1_TextChanged_1(object sender, EventArgs e)
        {
            try
            {
                label2.Text = Convert.ToString(Convert.ToInt32(label1.Text), 16);
                label3.Text = Convert.ToString(Convert.ToInt32(label1.Text), 8);
            }
            catch
            {

            }
        }

        private void Programm_Load(object sender, EventArgs e)
        {

        }
    }
}