form1.cs

好的软件需要大家分享和修正 我们一定要女里啊

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace counterTool2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        #region 各变量和常数的声明
        public const int NULL = 0;      // 定义操作码
        public const int ADD = 1;     //表示加
        public const int SUB = 2;     //减
        public const int MUL = 3;     //乘
        public const int DIV = 4;    //除
        public const int SQR = 5;    //求平方
        public const int SQRT = 6;   //求平方根
        public const int NODOT = 0;     // 定义是否点击了小数点,0 为没点
        public const int HASDOT = 1;
        public const int moden = 7;
        //以上用于CASE语句,选折用
        

        private double res = 0;         // 记录结果数
        private double tmp = 0;// 当前输入的操作数
        private double tem2 = 0;//保存当前数
        //以上用于获取操作数


        private int num = 0;        // 记录输入操作数的个数
                
        //以上纪录操作数的个数

        private int dotnum = 0;// 记录小数点部分的个数 
        //记录小数点以后的个数

        
        private int opt = NULL;         // 记录操作码
        private int dot = NODOT;    // 记录是否点击了小数点,0为没有点
        //以上用于记录是否熟路了小数点    
        
        
        
       string strOper;//获取操作符
        #endregion

        #region 获取操作数事件
        //获取操作数事件

        private void btn_0_Click(object sender, System.EventArgs e)
        {
            System.Windows.Forms.Button btnTmp;
            double i;

            btnTmp = sender as System.Windows.Forms.Button;
            if (btnTmp != null)
            {
                if (dot == NODOT)
                {
                    // 没有点击小数点
                    i = double.Parse(btnTmp.Tag.ToString()); //取用户自定义的控件关联数,并转换成double型
                    tem2 = tmp;
                    tmp = tmp * 10 + i;
                   
                    txtShow.Text = tmp.ToString();   //将其放入文本显示屏啊
                }
                else   // 点击了小数点
                {
                    dotnum++;    //记录小数点部分的个数
                    // 生成小数部分的新的数值
                    i = double.Parse(btnTmp.Tag.ToString()) / System.Math.Pow(10, dotnum);
                    tem2 = tmp;
                    tmp = tmp + i;  //将小数点后的值加到当前操做数
                    
                    txtShow.Text = tmp.ToString();
                }
            }
        }
        #endregion

        #region 获取操作符运事件
        //获取操作符运事件
        private void btn_Oper(object obj, EventArgs ea)
        {
            Button tmp1 = (Button)obj;
            //bool flag = true;
            strOper = tmp1.Text;
            switch (strOper)
            {
                case "/":       //除法运算
                    if (opt != NULL && opt != DIV)
                    {
                        calc();
                    }
                    opt = DIV;
                    if (num != 0)  //判断操作数的个数,如果两个就做二元运算
                    {
                       // if (tmp != 0)
                            res = res / tmp;
                       /* else
                        { txtShow.Text = "您的输陆有错误"; flag = flag; }*/
                    }
                    else
                        res = tmp;
                    num++;
                    tmp = 0;
                   // if (flag)
                    //{
                        txtShow.Text = res.ToString();
                    //}
                    

                    dot = NODOT;
                    break;
                case "*":
                    // 乘法运算
                    if (opt != NULL && opt != MUL)
                    {
                        calc();
                    }

                    opt = MUL;

                    if (num != 0)     //判断操作数的个数,如果两个就做二元运算    
                    {
                        if (tmp != 0)
                            res = res * tmp;
                    }
                    else
                        res = tmp;

                    num++;
                    tmp = 0;
                    txtShow.Text = res.ToString();
                    dot = NODOT;
                    break;
                case "+":            //加法运算
                    if (opt != NULL && opt != ADD)
                    {
                        calc();
                    }
                    opt = ADD;
                    if (num != 0)    //判断操作数的个数,如果两个就做二元运算
                        res = res + tmp;
                    else
                        res = tmp;
                    num++;
                    tmp = 0;
                    txtShow.Text = res.ToString();
                    dot = NODOT;
                    break;
                case "-":        //减法运算
                    if (opt != NULL && opt != SUB)
                    {
                        calc();
                    }
                    /*if(opt==ADD)
                    {
                        res=res+tmp;
                        tmp=0;
                    }*/
                    opt = SUB;
                    if (num != 0)    //判断操作数的个数,如果两个就做二元运算
                        res = res - tmp;
                    else
                        res = tmp;
                    num++;
                    tmp = 0;
                    txtShow.Text = res.ToString();
                    dot = NODOT;
                    break;
                case "sqrt":     //平方根运算
                    if (opt != NULL)
                    {
                        calc();
                    }

                    //opt=SQRT;
                    if (tmp > 0)  //要求操作数大于0
                    {
                        res = Math.Sqrt(tmp);
                        //res=tmp;
                    }
                    else if (res > 0)
                        res = Math.Sqrt(res);
                    txtShow.Text = res.ToString();
                    num++;
                    tmp = 0;
                    dot = NODOT;
                    break;
                case "sqr":
                    // 平方运算
                    if (opt != NULL)
                    {
                        calc();
                    }
                    //opt=SQR;
                    if (tmp != 0)
                    {
                        res = tmp * tmp;
                        //res=tmp;
                    }
                    else
                        res = res * res;

                    txtShow.Text = res.ToString();
                    num++;
                    tmp = 0;
                    dot = NODOT;
                    break;
                case "1/x":  //倒数运算
                    if (opt != NULL)
                    {
                        calc();
                    }
                    if (tmp != 0)
                    {
                        res = 1 / tmp;
                        //res=tmp;
                    }
                    else
                        res = 1 / res;
                    txtShow.Text = res.ToString();
                    tmp = 0;
                    dot = NODOT;
                    break;
                case ".":
                    // 点击了小数点
                    if (dot == HASDOT)
                        return;
                    else
                    {
                        dot = HASDOT;
                        dotnum = 0;
                    }
                    break;
            
                case "CE":     //清除运算
                    res = 0;         // 记录结果数
                    tmp = 0;         // 当前输入的操作数
                    opt = NULL;         // 记录操作码
                    dot = NODOT;    // 记录是否点击了小数点
                    num = 0;        // 记录输入操作数的个数
                    dotnum = 0;        // 记录小数点部分的个数
                    txtShow.Text = "0";
                    break;
                case "C":        
                    res = 0;       
                    tmp = 0;        
                    opt = NULL;         
                    dot = NODOT;    
                    num = 0;        
                    dotnum = 0;        
                    txtShow.Text = "0";
                    break;
                case "Backspace":
                   // tmp = tem2; ;
                    //txtShow.Text = tmp.ToString();
                    if (tmp != 0)
                    {
                        string s;
                        int len = (txtShow.Text).Length;
                       
                        if (len == 1)
                        {
                            tmp = 0;
                            txtShow.Text = tmp.ToString();
                        }
                        else if (len > 1)
                        {
                            s = (txtShow.Text).Remove(len - 1);
                            //len--;
                            tmp = double.Parse(s);
                            txtShow.Text = tmp.ToString();
                        }
                        
                    }
                    else  if(res!=0)
                    {
                        string s;
                        int len = (txtShow.Text).Length;

                        if (len == 1)
                        {
                            res= 0;
                            txtShow.Text = tmp.ToString();
                        }
                        else if (len > 1)
                        {
                            s = (txtShow.Text).Remove(len - 1);
                            //len--;
                            res = double.Parse(s);
                            txtShow.Text = res.ToString();
                        }
                    }
                    break;
                case "+/-":
                    if (tmp != 0)
                    {
                        tmp = 0 - tmp;
                        txtShow.Text = tmp.ToString();
                    }
                    else if (res != 0)
                    {
                        res = 0 - res;
                        txtShow.Text = res.ToString();
                    }
                    break;
                case  "%":
                   if (opt != NULL && opt != SUB)
                        {
                            calc();
                        }
                   
                    opt = moden;
                    if (num != 0)    //判断操作数的个数,如果两个就做二元运算
                        res = res %tmp;
                    else
                        res = tmp;
                    num++;
                    tmp = 0;
                    txtShow.Text = res.ToString();
                    dot = NODOT;
                    break;



            }
        }
        #region
        private void btn_equ_Click(object sender, System.EventArgs e)
        {
            calc();
        }

        private void calc()
        {
            // 生成结果
            if (num == 0)    //是否有操作数,没有就返回0
            {
                res = 0;
                tmp = 0;
                txtShow.Text = res.ToString();
                return;
            }

            switch (opt)  //找到对应的运算符进行计算
            {
                // 加法
                case ADD:
                    res = res + tmp;
                    break;
                // 减法
                case SUB:
                    res = res - tmp;
                    break;
                // 乘法
                case MUL:
                    res = res * tmp;
                    break;
                // 除法
                case DIV:
                    res = res / tmp;
                    break;
                // 平方
                case SQR:
                    res = tmp * tmp;
                    break;
                // 平方根
                case SQRT:
                    res = System.Math.Sqrt(tmp);
                    break;
                case moden:
                    res = res % tmp;
                    break;
                default:
                    return;
            }
            txtShow.Text = res.ToString();   
            opt = NULL;  //运算符清空
            tmp = 0;
            dot = NODOT;
            //res = 0;
            //num = 0;
        }
        #endregion

        #endregion

    }
}