C#实现简单的计算器功能完整实例

本文实例讲述了c#实现简单的计算器功能。分享给大家供大家参考，具体如下：

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;
using system.collections;
using system.threading;
using system.diagnostics;
namespace calculator
{
  public partial class form1 : form
  {
    public form1()
    {
      initializecomponent();
    }
    private string _sign;
    private double _first = 10241024;
    private double _second = 10241024;
    private string _number;
    private void button1_click(object sender, eventargs e)
    {
      _number += "1";
      this.textbox1.text += "1";
    }
    private void button2_click(object sender, eventargs e)
    {
      _number += "2";
      this.textbox1.text += "2";
    }
    private void button3_click(object sender, eventargs e)
    {
      _number += "3";
      this.textbox1.text += "3";
    }
    private void button4_click(object sender, eventargs e)
    {
      _number += "4";
      this.textbox1.text += "4";
    }
    private void button8_click(object sender, eventargs e)
    {
      _number += "5";
      this.textbox1.text += "5";
    }
    private void button7_click(object sender, eventargs e)
    {
      _number += "6";
      this.textbox1.text += "6";
    }
    private void button6_click(object sender, eventargs e)
    {
      _number += "7";
      this.textbox1.text += "7";
    }
    private void button5_click(object sender, eventargs e)
    {
      _number += "8";
      this.textbox1.text += "8";
    }
    private void button9_click(object sender, eventargs e)
    {
      _number += "9";
      this.textbox1.text += "9";
    }
    private void button10_click(object sender, eventargs e)
    {
      _number += "0";
      this.textbox1.text += "0";
    }
    private void button16_click(object sender, eventargs e)
    {
      //设置加号计算数
      setnumber(convert.todouble(_number));
      if (_sign == null || _second == 10241024)
      {
        _sign = "+";
        this.textbox1.text += "+";
        return;
      }
      if (_second != 10241024)
      {
        //开始进行计算
        computer compro = new computer(_sign, _first, _second);
        this.textbox1.text = compro.comt(out _first).tostring();
        //验证除数为零的情况
        if (_first == 10241024.10241023)
        {
          this.textbox1.text = "0";
          messagebox.show("除数不能为零！");
          _number = null;
          _first = 10241024;
          _second = 10241024;
          this.textbox1.text = null;
          _sign = null;
          this.textbox1.text = null;
        }
        //开始初始化数据
        _sign = "+";
        this.textbox1.text += "+";
        _second = 10241024;
        _number = null;
        return;
      }
    }
    private void button15_click(object sender, eventargs e)
    {
      //设置减号计算数
      setnumber(convert.todouble(_number));
      if (_sign == null || _second == 10241024)
      {
        _sign = "-";
        this.textbox1.text += "-";
        return;
      }
      if (_second != 10241024)
      {
        //开始进行计算
        computer compro = new computer(_sign, _first, _second);
        this.textbox1.text = compro.comt(out _first).tostring();
        //验证除数为零的情况
        if (_first == 10241024.10241023)
        {
          this.textbox1.text = "0";
          messagebox.show("除数不能为零！");
          _number = null;
          _first = 10241024;
          _second = 10241024;
          this.textbox1.text = null;
          _sign = null;
          this.textbox1.text = null;
        }
        //开始初始化数据
        _sign = "-";
        this.textbox1.text += "-";
        _second = 10241024;
        _number = null;
        return;
      }
    }
    private void button14_click(object sender, eventargs e)
    {
      //设置乘号计算数
      setnumber(convert.todouble(_number));
      if (_sign == null || _second == 10241024)
      {
        _sign = "*";
        this.textbox1.text += "*";
        return;
      }
      if (_second != 10241024)
      {
        //开始进行计算
        computer compro = new computer(_sign, _first, _second);
        this.textbox1.text = compro.comt(out _first).tostring();
        //验证除数为零的情况
        if (_first == 10241024.10241023)
        {
          this.textbox1.text = "0";
          messagebox.show("除数不能为零！");
          _number = null;
          _first = 10241024;
          _second = 10241024;
          this.textbox1.text = null;
          _sign = null;
          this.textbox1.text = null;
        }
        //开始初始化数据
        _sign = "*";
        this.textbox1.text += "*";
        _second = 10241024;
        _number = null;
        return;
      }
    }
      /// <summary>
      /// 设置除号计算数
      /// </summary>
      /// <param name="sender"></param>
      /// <param name="e"></param>
    private void button11_click(object sender, eventargs e)
    {
      setnumber(convert.todouble(_number));
      if (_sign == null || _second == 10241024)
      {
        _sign = "/";
        this.textbox1.text += "/";
        return;
      }
      if (_second != 10241024)
      {
        //开始进行计算
        computer compro = new computer(_sign, _first, _second);
        this.textbox1.text = compro.comt(out _first).tostring();
        //验证除数为零的情况
        if (_first == 10241024.10241023)
        {
          this.textbox1.text = "0";
          this.textbox1.text = "除数不能为零！";
          _number = null;
          _first = 10241024;
          _second = 10241024;
          this.textbox1.text = null;
          _sign = null;
          this.textbox1.text = null;
        }
        //开始初始化数据
        _sign = "/";
        this.textbox1.text += "/";
        _second = 10241024;
        _number = null;
        return;
      }
    }
    /// <summary>
    /// 清空输入框
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void button12_click(object sender, eventargs e)
    {
      _number = null;
      _first = 10241024;
      _second = 10241024;
      this.textbox1.text = null;
      _sign = null;
      this.textbox1.text = null;
    }
    private void button13_click(object sender, eventargs e)
    {
      setnumber(convert.todouble(_number));
      //判断是否设置了_second的值
      if (_second == 10241024)
      {
        _second = convert.todouble(_number);
        _number = null;
      }
      //判断是否设置了_first的值
      if (_first == 10241024)
      {
        _first = convert.todouble(_number);
        _number = null;
      }
      //判断是否有_sign的值
      if (_sign == null)
      {
        _sign = "+";
      }
      //开始进行计算
      computer compro = new computer(_sign, _first, _second);
      this.textbox1.text = compro.comt(out _first).tostring();
      //验证除数为零的情况
      if (_first == 10241024.10241023)
      {
        this.textbox1.text = "0";
        messagebox.show("除数不能为零！");
        _number = null;
        _first = 10241024;
        _second = 10241024;
        this.textbox1.text = null;
        _sign = null;
        this.textbox1.text = null;
      }
      //开始初始化数据
      _sign = null;
      _second = 10241024;
      _number = null;
    }
    public class computer
    {
      private string _sign;
      private double _first;
      private double _second;
      public computer(string str, double first, double second)
      {
        _sign = str;
        _first = first;
        _second = second;
      }
      //选择相应的运算符进行运算
      public double comt(out double first)
      {
        if (_sign == "+")
        {
          first = _first + _second;
          return _first + _second;
        }
        else if (_sign == "-")
        {
          first = _first - _second;
          return _first - _second;
        }
        else if (_sign == "*")
        {
          first = _first * _second;
          return _first * _second;
        }
        else if (_sign == "/")
        {
          if (_second == 0)
          {
            first = 10241024.10241023;
            return 10241024.10241023;
          }
          else
          {
            first = _first / _second;
            return _first / _second;
          }
        }
        else
        {
          first = 10241024.10241024;
          return 10241024.10241024;
        }
      }
    }
    //设置数字函数
    public void setnumber(double number)
    {
      if (_first == 10241024 && _number != null)
      {
        _first = convert.todouble(_number);
        _number = null;
      }
      else if (_second == 10241024 && _number != null)
      {
        _second = convert.todouble(_number);
        _number = null;
      }
    }
    private void timer1_tick(object sender, eventargs e)
    {
      this.label2.text = datetime.now.tostring();
    }
    private void button24_click(object sender, eventargs e)
    {
      if (this.textbox1.text == " ")
      {
        messagebox.show("请输入数据");
        this.textbox1.text = convert.toint64(textbox1.text.tostring(), 2).tostring();
      }
      else
      {
        this.textbox1.text = convert.toint64(textbox1.text.tostring(), 2).tostring();
      }
    }
    private void button22_click(object sender, eventargs e)
    {
      if (this.textbox1.text == " ")
      {
        messagebox.show("请输入数据");
        int64 int64 = convert.toint64(textbox1.text.tostring(), 2);
        this.textbox1.text = convert.tostring(int64,16);
      }
      else
      {
        int64 int64 = convert.toint64(textbox1.text.tostring(), 2);
        this.textbox1.text = convert.tostring(int64, 16);
      }
    }
    private void button23_click(object sender, eventargs e)
    {
      if (this.textbox1.text == " ")
      {
        messagebox.show("请输入数据");
        int64 int64 = convert.toint64(textbox1.text.tostring(), 2);
        this.textbox1.text = convert.tostring(int64, 8);
      }
      else
      {
        int64 int64 = convert.toint64(textbox1.text.tostring(), 2);
        this.textbox1.text = convert.tostring(int64, 8);
      }
    }
    private void button21_click(object sender, eventargs e)
    {
      if (this.textbox1.text == " ")
      {
        messagebox.show("请输入数据");
        int64 int64 = convert.toint64(textbox1.text);
        this.textbox1.text = convert.tostring(int64, 2);
      }
      else
      {
        int64 int64 = convert.toint64(textbox1.text);
        this.textbox1.text = convert.tostring(int64, 2);
      }
    }
    private void button27_click(object sender, eventargs e)
    {
      double buffer1= convert.todouble(textbox1.text);
        buffer1 = 1 / buffer1;
      this.textbox1.text = buffer1.tostring();
    }
    private void button17_click(object sender, eventargs e)
    {
      _number += ".";
      this.textbox1.text += ".";
    }
    private void button25_click(object sender, eventargs e)
    {
      double buffer1 = convert.todouble(textbox1.text);
      buffer1 = buffer1 * buffer1;
      this.textbox1.text = buffer1.tostring();
    }
    private void button26_click(object sender, eventargs e)
    {
      if (this.textbox1.text == " ")
      {
        messagebox.show("请输入数据");
        int64 int64 = convert.toint64(this.textbox1.text);
        int64 temp1 = 1;
        while (int64 > 1)
        {
          temp1 = temp1*int64 ;
          int64--;
        }
        this.textbox1.text = temp1.tostring();
      }
      else
      {
        int64 int64 = convert.toint64(this.textbox1.text);
        int64 temp1 = 1;
        while (int64 > 1)
        {
          temp1 = temp1 * int64;
          int64--;
        }
        this.textbox1.text = temp1.tostring();
      }
    }
    private void button28_click(object sender, eventargs e)
    {
      //int64 int64 = convert.toint64(this.textbox1.text);
      //double temp=math.log10(int64);
      //this.textbox1.text = temp.tostring();
      double temp1, temp2;
      string[] strarry = new string[2];
      strarry = this.textbox1.text.split('.');
      temp1 = convert.todouble(strarry[0]);
      temp2 = convert.todouble(strarry[1]);
      // double temp1 = convert.todouble(this.textbox1.text);
      temp2 = math.log(temp2,temp1 );
      this.textbox1.text = temp2.tostring();
    }
    private void button18_click(object sender, eventargs e)
    {
      double temp1 = convert.todouble(this.textbox1.text);
      double temp2 = math.sin(temp1);
      this.textbox1.text = temp2.tostring();
    }
    private void button19_click(object sender, eventargs e)
    {
      double temp1 = convert.todouble(this.textbox1.text);
      double temp2 = math.cos(temp1);
      this.textbox1.text = temp2.tostring();
    }
    private void button20_click(object sender, eventargs e)
    {
      double temp1 = convert.todouble(this.textbox1.text);
      double temp2 = math.tan(temp1);
      this.textbox1.text = temp2.tostring();
    }
    private void button33_click(object sender, eventargs e)
    {
      double temp1, temp2;
      string[] strarry=new string[2];
      strarry=this.textbox1.text.split('.');
      temp1 = convert.todouble(strarry[0]);
      temp2 = convert.todouble(strarry[1]);
      // double temp1 = convert.todouble(this.textbox1.text);
      temp2 = math.pow(temp1,temp2);
      this.textbox1.text = temp2.tostring();
    }
    /// <summary>
    /// 计算e的temp1次幂
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void button31_click(object sender, eventargs e)
    {
      double temp1 = convert.todouble(this.textbox1.text);
      double temp2 = math.exp(temp1);
      this.textbox1.text = temp2.tostring();
    }
    private void button34_click(object sender, eventargs e)
    {
       double temp1 = convert.todouble(this.textbox1.text);
      double temp2 = math.sqrt(temp1);
      this.textbox1.text = temp2.tostring();
    }
    private void button32_click(object sender, eventargs e)
    {
      double temp1, temp2;
      string[] strarry = new string[2];
      strarry = this.textbox1.text.split('.');
      temp1 = convert.todouble(strarry[0]);
      temp2 = convert.todouble(strarry[1]);
      // double temp1 = convert.todouble(this.textbox1.text);
      temp2 = math.ieeeremainder(temp1, temp2);
      this.textbox1.text = temp2.tostring();
    }
    /// <summary>
    /// 圆的面积
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void button30_click(object sender, eventargs e)
    {
      double buffer1 = convert.todouble(textbox1.text);
      buffer1 =3.1415926*buffer1*buffer1;
      this.textbox1.text = buffer1.tostring();
    }
    /// <summary>
    /// 三角形面积
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void button29_click(object sender, eventargs e)
    {
      double temp1, temp2,temp3,p,area;
      string[] strarry = new string[3];
      strarry = this.textbox1.text.split('.');
      temp1 = convert.todouble(strarry[0]);
      temp2 = convert.todouble(strarry[1]);
      temp3 = convert.todouble(strarry[2]);
      // double temp1 = convert.todouble(this.textbox1.text);
      p = (temp1 + temp2 + temp3) / 2;
      area= p * (p - temp1) * (p - temp2) * (p - temp3);
      area = math.sqrt(area);
      this.textbox1.text = area.tostring();
    }
    private void linklabel1_linkclicked(object sender, linklabellinkclickedeventargs e)
    {
      string str = e.link.tostring();
      process.start(str);
    }
    private void form1_load(object sender, eventargs e)
    {
    }
  }
}

运行效果：

ps：这里再为大家推荐几款计算工具供大家进一步参考借鉴：

在线一元函数（方程）求解计算工具：

科学计算器在线使用_高级计算器在线计算：

在线计算器_标准计算器：

更多关于c#相关内容感兴趣的读者可查看本站专题：《c#数据结构与算法教程》、《c#程序设计之线程使用技巧总结》、《c#常见控件用法教程》、《winform控件用法总结》、《c#数组操作技巧总结》及《c#面向对象程序设计入门教程》

希望本文所述对大家c#程序设计有所帮助。