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标题: 做个简单计算器。。 [打印本页]

作者: ＇___________彼 时间: 2013-12-18 21:53
标题: 做个简单计算器。。
这个程序是我copy 的，自己在详细的读。
运行后只能输入123，不能输入4567890，也不能得出答案。
是什么问题，帮忙看一看。谢谢

作者: ＇___________彼 时间: 2013-12-18 21:55
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 calculator
{
public partial class Form1 : Form
{
      public Form1()
      {
         InitializeComponent();
      }

      private void Form1_Load(object sender, EventArgs e)
      {

      }

      private void but1_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text += btn.Text;
      }

      private void but2_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text += btn.Text;
      }

      private void but3_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text += btn.Text;
      }

      private void but4_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text += btn.Text;
      }

      private void but5_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text += btn.Text;
      }

      private void but6_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text += btn.Text;
      }

      private void but7_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text += btn.Text;
      }

      private void but8_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text += btn.Text;
      }

      private void but9_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text += btn.Text;
      }

      private void but10_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text += btn.Text;
      }

      private void butAdd_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text = textBox1.Text + " " + btn.Text + " ";
      }

      private void butSub_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text = textBox1.Text + " " + btn.Text + " ";
      }

      private void butMul_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text = textBox1.Text + " " + btn.Text + " ";
      }

      private void butDiv_Click(object sender, EventArgs e)
      {
         Button btn = (Button)sender;
         textBox1.Text = textBox1.Text + " " + btn.Text + " ";
      }

      private void butClear_Click(object sender, EventArgs e)
      {
         textBox1.Text = "";       }

      private void butCalculator_Click(object sender, EventArgs e)
      {
         Single r;                //用于保存计算结果
         string t = textBox1.Text;　　//t用于保存文本框中的算术表达式
         int space = t.IndexOf(' ');//用于搜索空格位置
         string s1 = t.Substring(space - 1, 1);//s1用于保存第一个运算数
         char op = Convert.ToChar(t.Substring(space + 1, 1));//op用于保存运算符
         string s2 = t.Substring(space + 3);//s2用于保存第二个运算数
         Single arg1 = Convert.ToSingle(s1);//将运算数从string转换为Single
         Single arg2 = Convert.ToSingle(s2);
         switch (op)
         {
            case '+':
                  r = arg1 + arg2;
                  break;
            case '-':
                  r = arg1 - arg2;
                  break;
            case '*':
                  r = arg1 * arg2;
                  break;

            case '/':
                  if (arg2 == 0)
                  {
                     throw new ApplicationException();
                  }
                  else
                  {
                     r = arg1 / arg2;
                     break;
                  }
                  break;
            default:
                  throw new ApplicationException();

                  textBox1.Text = r.ToString();

         }
      }
}
}

作者: 站长苏飞 时间: 2013-12-19 08:33
这个CSdn有例子吧，去下载个就是了。http://download.csdn.net/detail/dkgll/704329

作者: ＇___________彼 时间: 2013-12-21 13:25

站长苏飞发表于 2013-12-19 08:33
这个CSdn有例子吧，去下载个就是了。http://download.csdn.net/detail/dkgll/704329

没有积分下载啊。。发个给我吧谢谢。695594509@qq.com

作者: 站长苏飞 时间: 2013-12-22 21:06

＇___________彼发表于 2013-12-21 13:25
没有积分下载啊。。发个给我吧谢谢。

没再找个别的，我也没上面积分，呵呵

作者: 我一直在等待 时间: 2013-12-29 22:14
强烈支持楼主ing……新手来学习中

作者: zk9474 时间: 2014-3-9 13:24
http://pan.baidu.com/s/1hqkhPJ2
这是我自己写的楼主可参考一下

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