计算器个人开发流程代码

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 jisuangqi

{    

     public partial  class Form1 : Form   

  {   

               double a = 0;     

            double b = 0;         

        bool c = false ;        

          string d;        

 

     public Form1()        

         {       

                InitializeComponent();            

          }

 

          private void Form1_Load(object sender, EventArgs e)     

             {

              }

      

          private void button9_Click(object sender, EventArgs e)     // button9_Click是对应我的1键,
     {                                // 算法没问题,只要单击相应的键,进入填入相应的算法即可

           if ( c ==true )        

                 {           

                 textBox1 .Text ="";            

                  c=false ;                 

                     }                    

             textBox1.Text+="1";     

            }

 

          private void button10_Click(object sender, EventArgs e)    // button10_Click是对应我的2键

              {           

              if(c==true )            

               {             

                    textBox1.Text="";          

                      c=false ;               

                      }           

               textBox1.Text+="2";      

            }

 

         private void button11_Click(object sender, EventArgs e)        //对应我的3键

             {       

                if (c==true )       

                  {             

                    textBox1 .Text ="";           

                      c=false ;                 

                     }         

                textBox1 .Text +="3";          

               }

 

          private void button5_Click(object sender, EventArgs e)    //对应我的4键

             {       

                if(c==true )         

                {           

                    textBox1.Text="";         

                      c=false ;              

                      }           

              textBox1.Text+="4";     

              }

 

        private void button6_Click(object sender, EventArgs e)       //对应我的5键

            {        

                 if(c==true )      

                    {              

                   textBox1.Text="";          

                      c=false ;           

                        }                

              textBox1.Text+="5";      

             }

 

          private void button7_Click(object sender, EventArgs e)    //对应我的6键

             {       

                if(c==true )          

               {               

                textBox1.Text="";   

                        c=false ;               

                      }          

             textBox1.Text+="6";       

            }

 

          private void button1_Click(object sender, EventArgs e)  //对应我的7键

               {       

                if(c==true )        

                 {            

                   textBox1.Text="";        

                    c=false ;

                      }                   

                   textBox1.Text+="7";        

           }

 

        private void button2_Click(object sender, EventArgs e)   //对应我的8键

              {            

             if(c==true )        

                 {                

                textBox1.Text="";          

                     c=false ;           

                      }        

                  textBox1.Text+="8";    

              }

 

        private void button3_Click(object sender, EventArgs e)    //对应我的9键

              {      

                 if(c==true )      

                   {               

                  textBox1.Text="";          

                     c=false ;           

                   }          

                textBox1.Text+="9";    

               }

 

          private void button13_Click(object sender, EventArgs e)   //对应我0的键,增加了除数不能为0的判断

                {     

                  if(c==true )              

                  {               

                   textBox1.Text="";     

                          c=false ;

                        }         

                textBox1.Text += "0";

                     if (d == "/")        

                       {           

                          textBox1.Clear();            

                           MessageBox.Show("除数不能为零", "错误提示", MessageBoxButtons.OK,   MessageBoxIcon.Warning);                              }          

               }

 

          private void button4_Click(object sender, EventArgs e)   //对应我的+键

                {                      

                c = true;         

                 b = double.Parse(textBox1.Text);       

                  d = "+";       

              }

 

          private void button8_Click(object sender, EventArgs e)   //对应我的-键

                {     

                     c = true;       

                   b = double.Parse(textBox1.Text);    

                     d = "-";       

              }

          private void button12_Click(object sender, EventArgs e)   //对应我的*键

                {              

                    c = true;       

                   b = double.Parse(textBox1.Text);  

                       d = "*";    

                 }

 

          private void button16_Click(object sender, EventArgs e)    //对应我的/键

               {        

                    c = true;      

                     b = double.Parse(textBox1.Text);     

                      d = "/";       

              }

 

          private void button17_Click(object sender, EventArgs e)    //对应我的平方键

               {        

                   c = true;        

                   b = double.Parse(textBox1.Text);     

                     d = "x2";  

                 }

 

          private void button18_Click(object sender, EventArgs e)    //对应我的开方键

               {          

                 c = true;      

                    b = double.Parse(textBox1.Text);      

                    d = "sqrt";        

            }        

     private void button19_Click(object sender, EventArgs e)   //对应我的log键

                {     

                      c = true;   

                        b = double.Parse(textBox1.Text);      

                       d = "log";      

               }

         private void button20_Click(object sender, EventArgs e)      //对应我的ln键

             {          

                   c = true;   

                        b = double.Parse(textBox1.Text);    

                        d = "ln";    

               }

      

        private void button15_Click(object sender, EventArgs e)  //对应我的=键

                 {           

                  switch (d)         

                       {

                               case "+": a = b + double.Parse(textBox1.Text); break;     

                             case "-": a = b - double.Parse(textBox1.Text); break;    

                               case "*": a = b * double.Parse(textBox1.Text); break;        

                            case "/": a = b / double.Parse(textBox1.Text); break;           

                          case "x2": a = b * double.Parse(textBox1.Text); break;      

                              case "sqrt": a = Math.Sqrt(b ); break;               

                        case "log": a = Math.Log(double.Parse(textBox1.Text),b ); break;      

                              case "ln": a = Math.Log(b, Math.E); break;

                              }                    

              textBox1.Text = a + "";               

                  c = true;   

                   }

 

        private void button14_Click(object sender, EventArgs e)    //对应我的c键,实现了清零的功能

               {        

                   textBox1.Text = "";  

                 }

 

}

 

点击运行界面,就会出来窗体,

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