Question

用c#编写简易计算器，要求加减乘除和括号的运算，求高人指点....

很着急啊 。。。求高人指点。。

Answer 1

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace Js { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { double sum; switch (comboBox1.Text) { case "+": sum = Convert.ToDouble(textBox1.Text) + Convert.ToDouble(textBox2.Text); textBox3.Text = sum.ToString(); break; case "-": sum = Convert.ToDouble(textBox1.Text) - Convert.ToDouble(textBox2.Text); textBox3.Text = sum.ToString(); break; case "*": sum = Convert.ToDouble(textBox1.Text) * Convert.ToDouble(textBox2.Text); textBox3.Text = sum.ToString(); break; case "/": sum = Convert.ToDouble(textBox1.Text) / Convert.ToDouble(textBox2.Text); textBox3.Text = sum.ToString(); break; } } } }