---

using System;
using System.Drawing;
using System.Windows.Forms;

namespace lr16
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            // Заполнение ComboBox коэффициентами
            string[] coeffs = { "1.0", "1.5", "2.0", "2.5", "3.0" };
            cbA.Items.AddRange(coeffs);
            cbB.Items.AddRange(coeffs);
            cbC.Items.AddRange(coeffs);

            // Устанавливаем значения по умолчанию
            cbA.SelectedIndex = 2; // 2.0
            cbB.SelectedIndex = 1; // 1.5
            cbC.SelectedIndex = 3; // 2.5

            rbMethod1.Checked = true;
            tbX.Text = "4";
            tbY.Text = "5";
            tbZ.Text = "2";
        }

        private void btnCalculate_Click(object sender, EventArgs e)
        {
            try
            {
                // Проверка, выбраны ли коэффициенты
                if (cbA.SelectedIndex == -1 || cbB.SelectedIndex == -1 || cbC.SelectedIndex == -1)
                {
                    MessageBox.Show("Пожалуйста, выберите все коэффициенты a, b и c из выпадающих списков!",
                        "Внимание", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return;
                }

                // Проверка заполненности полей переменных
                if (string.IsNullOrWhiteSpace(tbX.Text) ||
                    string.IsNullOrWhiteSpace(tbY.Text) ||
                    string.IsNullOrWhiteSpace(tbZ.Text))
                {
                    MessageBox.Show("Заполните все поля переменных x, y, z!",
                        "Внимание", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return;
                }

                double a = double.Parse(cbA.Text);
                double b = double.Parse(cbB.Text);
                double c = double.Parse(cbC.Text);
                double x = double.Parse(tbX.Text);
                double y = double.Parse(tbY.Text);
                double z = double.Parse(tbZ.Text);

                // Если флажок снят — обнуляем z
                if (!cbIncludeZ.Checked)
                    z = 0;

                double W = 0;
                string method = rbMethod1.Checked ? "Способ 1 (прямой)" : "Способ 2 (цикл)";

                if (rbMethod1.Checked)
                {
                    // Способ 1
                    W = a * x + b * y + c * z;
                }
                else
                {
                    // Способ 2 — через цикл
                    double[] coeffs = { a, b, c };
                    double[] vars = { x, y, z };
                    for (int i = 0; i < 3; i++)
                    {
                        W += coeffs[i] * vars[i];
                    }
                }

                string resultStr = $"{method} → W = {W:F4}";
                lbHistory.Items.Add(resultStr);

                lblResult.Text = $"Результат: W = {W:F4}";
                lblResult.ForeColor = Color.DarkGreen;
            }
            catch (FormatException)
            {
                MessageBox.Show("Ошибка формата числа!\n\n" +
                    "• Убедитесь, что коэффициенты a, b, c выбраны из списков\n" +
                    "• В поля x, y, z введены только цифры (можно использовать запятую или точку)",
                    "Ошибка ввода", MessageBoxButtons.OK, MessageBoxIcon.Error);

                lblResult.ForeColor = Color.Red;
                lblResult.Text = "Ошибка ввода данных!";
            }
            catch (Exception ex)
            {
                MessageBox.Show("Непредвиденная ошибка: " + ex.Message,
                    "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void rbMethod1_CheckedChanged(object sender, EventArgs e)
        {
            if (rbMethod1.Checked)
                lblMethodInfo.Text = "Выбран способ: Прямое вычисление";
        }

        private void rbMethod2_CheckedChanged(object sender, EventArgs e)
        {
            if (rbMethod2.Checked)
                lblMethodInfo.Text = "Выбран способ: Через массив и цикл";
        }

        private void cbIncludeZ_CheckedChanged(object sender, EventArgs e)
        {
            tbZ.Enabled = cbIncludeZ.Checked;
        }

        private void btnClear_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("Очистить всю историю расчётов?", "Подтверждение",
                MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
            {
                lbHistory.Items.Clear();
            }
        }
    }
}
namespace lr16
{
    partial class Form1
    {
        private System.ComponentModel.IContainer components = null;

        // Элементы управления
        private Label lblTitle;
        private GroupBox gbMethod;
        private Label lblMethodInfo;
        private RadioButton rbMethod1;
        private RadioButton rbMethod2;

        private GroupBox gbCoefficients;
        private Label lblA, lblB, lblC;
        private ComboBox cbA, cbB, cbC;

        private GroupBox gbVariables;
        private Label lblX, lblY, lblZ;
        private TextBox tbX, tbY, tbZ;
        private CheckBox cbIncludeZ;

        private Button btnCalculate;
        private Button btnClear;

        private GroupBox gbResult;
        private Label lblResult;

        private ListBox lbHistory;
        private ToolTip toolTip1;

        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.toolTip1 = new ToolTip(this.components);

            this.ClientSize = new System.Drawing.Size(760, 660);
            this.Text = "Лабораторная работа №16 — Вариант 10";
            this.StartPosition = FormStartPosition.CenterScreen;
            this.FormBorderStyle = FormBorderStyle.FixedSingle;
            this.MaximizeBox = false;
            this.BackColor = System.Drawing.Color.WhiteSmoke;

            // Заголовок формы
            this.lblTitle = new Label
            {
                Text = "Лабораторная работа №16\nМеханизм событий. Простые элементы управления\nВариант 10",
                Font = new System.Drawing.Font("Segoe UI", 15F, System.Drawing.FontStyle.Bold),
                TextAlign = System.Drawing.ContentAlignment.MiddleCenter,
                Location = new System.Drawing.Point(20, 10),
                Size = new System.Drawing.Size(720, 80),
                ForeColor = System.Drawing.Color.DarkBlue
            };

            // Группа способа расчёта
            this.gbMethod = new GroupBox
            {
                Text = "Способ расчёта",
                Location = new System.Drawing.Point(30, 100),
                Size = new System.Drawing.Size(700, 115),
                Font = new System.Drawing.Font("Segoe UI", 10F, System.Drawing.FontStyle.Bold)
            };

            this.lblMethodInfo = new Label
            {
                Text = "Выбран способ: Прямое вычисление",
                Location = new System.Drawing.Point(20, 25),
                Size = new System.Drawing.Size(500, 20)
            };

            this.rbMethod1 = new RadioButton
            {
                Text = "Способ 1: Прямое вычисление  W = a·x + b·y + c·z",
                Location = new System.Drawing.Point(20, 50),
                AutoSize = true
            };
            this.rbMethod1.CheckedChanged += new System.EventHandler(this.rbMethod1_CheckedChanged);

            this.rbMethod2 = new RadioButton
            {
                Text = "Способ 2: Через массив коэффициентов и цикл for",
                Location = new System.Drawing.Point(20, 75),
                AutoSize = true
            };
            this.rbMethod2.CheckedChanged += new System.EventHandler(this.rbMethod2_CheckedChanged);

            this.gbMethod.Controls.Add(this.lblMethodInfo);
            this.gbMethod.Controls.Add(this.rbMethod1);
            this.gbMethod.Controls.Add(this.rbMethod2);

            // Группа коэффициентов
            this.gbCoefficients = new GroupBox
            {
                Text = "Коэффициенты a, b, c",
                Location = new System.Drawing.Point(30, 225),
                Size = new System.Drawing.Size(355, 150),
                Font = new System.Drawing.Font("Segoe UI", 10F, System.Drawing.FontStyle.Bold)
            };

            this.lblA = new Label { Text = "a =", Location = new Point(25, 35), AutoSize = true };
            this.cbA = new ComboBox { Location = new Point(80, 32), Width = 130, DropDownStyle = ComboBoxStyle.DropDownList };

            this.lblB = new Label { Text = "b =", Location = new Point(25, 70), AutoSize = true };
            this.cbB = new ComboBox { Location = new Point(80, 67), Width = 130, DropDownStyle = ComboBoxStyle.DropDownList };

            this.lblC = new Label { Text = "c =", Location = new Point(25, 105), AutoSize = true };
            this.cbC = new ComboBox { Location = new Point(80, 102), Width = 130, DropDownStyle = ComboBoxStyle.DropDownList };

            this.gbCoefficients.Controls.Add(this.lblA);
            this.gbCoefficients.Controls.Add(this.cbA);
            this.gbCoefficients.Controls.Add(this.lblB);
            this.gbCoefficients.Controls.Add(this.cbB);
            this.gbCoefficients.Controls.Add(this.lblC);
            this.gbCoefficients.Controls.Add(this.cbC);

            // Группа переменных
            this.gbVariables = new GroupBox
            {
                Text = "Переменные x, y, z",
                Location = new System.Drawing.Point(400, 225),
                Size = new System.Drawing.Size(330, 150),
                Font = new System.Drawing.Font("Segoe UI", 10F, System.Drawing.FontStyle.Bold)
            };

            this.lblX = new Label { Text = "x =", Location = new Point(25, 35), AutoSize = true };
            this.tbX = new TextBox { Location = new Point(80, 32), Width = 120, TextAlign = HorizontalAlignment.Center };

            this.lblY = new Label { Text = "y =", Location = new Point(25, 70), AutoSize = true };
            this.tbY = new TextBox { Location = new Point(80, 67), Width = 120, TextAlign = HorizontalAlignment.Center };

            this.lblZ = new Label { Text = "z =", Location = new Point(25, 105), AutoSize = true };
            this.tbZ = new TextBox { Location = new Point(80, 102), Width = 120, TextAlign = HorizontalAlignment.Center };

            this.cbIncludeZ = new CheckBox
            {
                Text = "Включить z в расчёт",
                Location = new Point(25, 135),
                Checked = true,
                Font = new Font("Segoe UI", 9.5F)
            };
            this.cbIncludeZ.CheckedChanged += new System.EventHandler(this.cbIncludeZ_CheckedChanged);

            this.gbVariables.Controls.Add(this.lblX);
            this.gbVariables.Controls.Add(this.tbX);
            this.gbVariables.Controls.Add(this.lblY);
            this.gbVariables.Controls.Add(this.tbY);
            this.gbVariables.Controls.Add(this.lblZ);
            this.gbVariables.Controls.Add(this.tbZ);
            this.gbVariables.Controls.Add(this.cbIncludeZ);

            // Кнопки
            this.btnCalculate = new Button
            {
                Text = "Вычислить W",
                Location = new System.Drawing.Point(30, 390),
                Size = new System.Drawing.Size(190, 50),
                Font = new System.Drawing.Font("Segoe UI", 11F, System.Drawing.FontStyle.Bold),
                BackColor = System.Drawing.Color.FromArgb(0, 122, 204),
                ForeColor = System.Drawing.Color.White
            };
            this.btnCalculate.Click += new System.EventHandler(this.btnCalculate_Click);

            this.btnClear = new Button
            {
                Text = "Очистить историю",
                Location = new System.Drawing.Point(240, 390),
                Size = new System.Drawing.Size(160, 50),
                Font = new System.Drawing.Font("Segoe UI", 10F)
            };
            this.btnClear.Click += new System.EventHandler(this.btnClear_Click);

            // Группа результата
            this.gbResult = new GroupBox
            {
                Text = "Результат расчёта",
                Location = new System.Drawing.Point(30, 455),
                Size = new System.Drawing.Size(700, 85),
                Font = new System.Drawing.Font("Segoe UI", 10F, System.Drawing.FontStyle.Bold)
            };

            this.lblResult = new Label
            {
                Text = "Результат: W = ?",
                Location = new System.Drawing.Point(20, 30),
                Size = new System.Drawing.Size(660, 40),
                Font = new System.Drawing.Font("Segoe UI", 14F, System.Drawing.FontStyle.Bold),
                ForeColor = System.Drawing.Color.DarkGreen
            };

            this.gbResult.Controls.Add(this.lblResult);

            // История расчётов
            this.lbHistory = new ListBox
            {
                Location = new System.Drawing.Point(30, 555),
                Size = new System.Drawing.Size(700, 90),
                Font = new System.Drawing.Font("Consolas", 9.5F)
            };

            // Добавляем все элементы на форму
            this.Controls.Add(this.lblTitle);
            this.Controls.Add(this.gbMethod);
            this.Controls.Add(this.gbCoefficients);
            this.Controls.Add(this.gbVariables);
            this.Controls.Add(this.btnCalculate);
            this.Controls.Add(this.btnClear);
            this.Controls.Add(this.gbResult);
            this.Controls.Add(this.lbHistory);
        }

        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
                components.Dispose();
            base.Dispose(disposing);
        }
    }
}