数据库技术与应用之一元二次方程求解

lihaochuan1

于 2022-09-21 16:31:40 发布

阅读量318

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文章标签： c# 开发语言

本文链接：https://blog.youkuaiyun.com/lihaochuan1/article/details/126975567

版权

namespace WinFormsApp3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int a, b, c;
            double x1, x2,delta, X;
            a=int.Parse(textBox1.Text);
            b=int.Parse(textBox2.Text);
            c=int.Parse(textBox3.Text);
            delta = b * b - 4 * a * c;
            X = -b / (2.0 * a);
            if (delta < 0)
            {
                delta = -delta;
                textBox4.Text = new string(X + "+" + delta + "i");
                textBox5.Text = new string(X + "-" + delta + "i");
            }
            else
            {
                delta = Math.Sqrt(delta);
                x1 = X + delta;
                x2 = X - delta;
                string X2 =x2.ToString();
                string X1 =x1.ToString();
                textBox4.Text = X1;
                textBox5.Text = X2;

            }
                

        }

        private void button2_Click(object sender, EventArgs e)
        {
            textBox1.Clear();
            textBox2.Clear();  
            textBox3.Clear();
            textBox4.Clear();
            textBox5.Clear();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}

窗体如下