Список проголосовавших за комментарий "квадратное уравнение <br/> и формы: окна и кнопки <br/> <br/> <a class="imgpreview" href="/uploads/images/05/70/34/2019/04/07/2e5371.png"><img src="/uploads/images/05/70/34/2019/04/07/df33a7.png"/></a><br/> <br/> //poleQUA.cs<br/> using System; <br/> using System.Windows.Forms;<br/> namespace poleQUA<br/> {<br/> public class Program<br/> {<br/> static void Main()<br/> {<br/> Application.Run(new poleQUA());<br/> }<br/> }<br/> class poleQUA: Form<br/> {<br/> TextBox textBoxA, textBoxB, textBoxC;<br/> Button buttonD;<br/> public poleQUA()<br/> { <br/> textBoxA=new TextBox();<br/> textBoxB=new TextBox();<br/> textBoxC=new TextBox();<br/> textBoxA.Location = new System.Drawing.Point(150, 50);<br/> textBoxB.Location = new System.Drawing.Point(100, 100);<br/> textBoxC.Location = new System.Drawing.Point(50, 150);<br/> this.Controls.Add(textBoxA); <br/> this.Controls.Add(textBoxB); <br/> this.Controls.Add(textBoxC); <br/> var labelq = new Label();<br/> labelq.Text = «Input A= 6 & B= 7 & C= 2»;<br/> labelq.Dock = DockStyle.Top;<br/> Controls.Add(labelq);<br/> var labelA = new Label();<br/> labelA.Text = «A= »;<br/> labelA.Location = new System.Drawing.Point(130, 52);<br/> Controls.Add(labelA);<br/> var labelB = new Label();<br/> labelB.Text = «B= »;<br/> labelB.Location = new System.Drawing.Point(80, 102);<br/> Controls.Add(labelB);<br/> var labelC = new Label();<br/> labelC.Text = «C= »;<br/> labelC.Location = new System.Drawing.Point(30, 152);<br/> Controls.Add(labelC);<br/> buttonD = new Button(); <br/> buttonD.Location = new System.Drawing.Point(100, 200);<br/> buttonD.Text = «D= x1= x2=»;<br/> buttonD.Click+=buttonD_Click;<br/> this.Controls.Add(buttonD);<br/> }<br/> private void buttonD_Click(object sender, EventArgs e)<br/> {<br/> int za = Convert.ToInt32(textBoxA.Text);<br/> int zb = Convert.ToInt32(textBoxB.Text);<br/> int zc = Convert.ToInt32(textBoxC.Text);<br/> double d = (zb * zb — 4 * za * zc);<br/> double x1 = (-zb + Math.Sqrt(d)) / (2 * za);<br/> double x2 = (-zb — Math.Sqrt(d)) / (2 * za);<br/> string dd = (d.ToString());<br/> string xx1 = (x1.ToString());<br/> string xx2 = (x2.ToString());<br/> string m = «D= » + dd + " x1= " + xx1 + " x2= " + xx2;<br/> {<br/> MessageBox.Show(m);<br/> }<br/> }<br/> } <br/> }<br/> <br/> <br/> "