183354287

using System;
using System.Windows.Forms;
namespace WindowsFormsApplicationTest {
    public partial class Form1 : Form  {
        public Form1() { InitializeComponent(); }
        private void button1_Click(object sender, EventArgs e) {
            double a = 0, b = 0, c = 0, x = 0, y = 0;
            string badFormat = "Неверный формат!";
            string overflow = "Допущено переполнение!";
            bool bad = false;
            try { a = double.Parse(this.textBox3.Text); }
            catch (FormatException ex) { this.textBox3.Text = badFormat; bad = true; }
            catch (OverflowException ex) { this.textBox3.Text = overflow; bad = true; }
            finally {
                try { b = double.Parse(this.textBox4.Text); }
                catch (FormatException ex) { this.textBox4.Text = badFormat; bad = true; }
                catch (OverflowException ex) { this.textBox4.Text = overflow; bad = true; }
                finally {
                    try { c = double.Parse(this.textBox5.Text); }
                    catch (FormatException ex) { this.textBox5.Text = badFormat; bad = true; }
                    catch (OverflowException ex) { this.textBox5.Text = overflow; bad = true; }
                    finally {
                        try { x = double.Parse(this.textBox1.Text); }
                        catch (FormatException ex) { this.textBox1.Text = badFormat; bad = true; }
                        catch (OverflowException ex) { this.textBox1.Text = overflow; bad = true; }
                        finally {
                            try { y = double.Parse(this.textBox2.Text); }
                            catch (FormatException ex) { this.textBox2.Text = badFormat; bad = true; }
                            catch (OverflowException ex) { this.textBox2.Text = overflow; bad = true; }
                        }
                    }
                }
            }
            this.label1.Text = "V = ";
            if (bad) this.label1.Text += "Ошибка в данных!";
            else {
                Function function = new Function(a, b, c, x, y);
                this.label1.Text += function.V;
            }
        }
    }
    public class Function {
        private double a, b, c, x, y;
        private string v;
        public string V { get { return v; } }
        public Function(double a, double b, double c, double x, double y) {
            this.a = a;
            this.b = b;
            this.c = c;
            this.x = x;
            this.y = y;
            this.v = Result();
        }
        private string Result() {
            double sum = a + b + c;
            if (double.IsPositiveInfinity(sum)) return "+Бесконечность";
            else if (double.IsNegativeInfinity(sum)) return "-Бесконечность";
            double result;
            if (this.x - this.y == 0) return "Попытка деления на ноль!";
            if (this.x < 3) result = sum / 2 * Math.Min(this.x, Math.Min(this.y, (this.x + this.y) / (this.x - this.y)));
            else if (this.x > 0 && this.y > 1) result = Math.Min(this.x, this.y);
            result = this.y * sum;
            if (double.IsPositiveInfinity(result)) return "+Бесконечность";
            else if (double.IsNegativeInfinity(result)) return "-Бесконечность";
            return result.ToString();
        }
    }
}