作业2

#作业要求

#代码

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace 计算器 {

public partial class Form1 : Form {

public Form1() {

InitializeComponent(); }

private void button1_Click(object sender, EventArgs e) {

float num1 = 0;

float num2 = 0;

float result = 0;

num1 = float.Parse(textBox1.Text); //将文本框输入的字符转换成数值

num2 = float.Parse(textBox2.Text);

result = num1 * num2; textBox3.Text = result.ToString(); //将数值转换成字符 }

private void button2_Click(object sender, EventArgs e) {

textBox1.Text = "";

textBox2.Text = "";

textBox3.Text = ""; }

#效果

作业2