C#复杂计算器的实现

Posted 2021-05-15 敲代码两年半的练习生

【C#】复杂计算器的实现

• 1 题目描述
• 2 源码详解
• 3 实现效果

1 题目描述

复杂计算器的实现

2 源码详解

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 Csharp9_1
{
    public partial class MyCalculator : Form
    {
        double ShowResNumber = 0;
        double InputNumber = 0;
        bool flag = true;
        string symbol;
        public MyCalculator()
        {
            InitializeComponent();
        }

        private void MyCalculator_Load(object sender, EventArgs e)
        {

        }

        private void Back_Click(object sender, EventArgs e)
        {
            NumberShow.Text = NumberShow.Text.Substring(0, NumberShow.Text.Length - 1);
        }

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

        private void Clear_Click(object sender, EventArgs e)
        {
            NumberShow.Text = "";
            ShowResNumber = 0;
            InputNumber = 0;
            flag = true;
            symbol = "";
        }

        private void Symbol_Click(object sender, EventArgs e)
        {
            flag = true;
            InputNumber = double.Parse(NumberShow.Text);
            symbol = "+-";
        }

        private void SignOfEvolution_Click(object sender, EventArgs e)
        {
            flag = true;
            InputNumber = double.Parse(NumberShow.Text);
            symbol = "sqrt";
        }

        private void Seven_Click(object sender, EventArgs e)
        {
            if (flag == true)
            {
                NumberShow.Text = "";
                flag = false;
            }
            NumberShow.Text += "7";
        }

        private void Eight_Click(object sender, EventArgs e)
        {
            if (flag == true)
            {
                NumberShow.Text = "";
                flag = false;
            }
            NumberShow.Text += "8";
        }

        private void Nine_Click(object sender, EventArgs e)
        {
            if (flag == true)
            {
                NumberShow.Text = "";
                flag = false;
            }
            NumberShow.Text += "9";
        }

        private void Divide_Click(object sender, EventArgs e)
        {
            flag = true;
            InputNumber = double.Parse(NumberShow.Text);
            symbol = "/";
        }

        private void Remainder_Click(object sender, EventArgs e)
        {
            flag = true;
            InputNumber = double.Parse(NumberShow.Text);
            symbol = "mod";
        }

        private void Four_Click(object sender, EventArgs e)
        {
            if (flag == true)
            {
                NumberShow.Text = "";
                flag = false;
            }
            NumberShow.Text += "4";
        }

        private void Five_Click(object sender, EventArgs e)
        {
            if (flag == true)
            {
                NumberShow.Text = "";
                flag = false;
            }
            NumberShow.Text += "5";
        }

        private void Six_Click(object sender, EventArgs e)
        {
            if (flag == true)
            {
                NumberShow.Text = "";
                flag = false;
            }
            NumberShow.Text += "6";
        }

        private void Multiply_Click(object sender, EventArgs e)
        {
            flag = true;
            InputNumber = double.Parse(NumberShow.Text);
            symbol = "*";
        }

        private void Reciprocal_Click(object sender, EventArgs e)
        {
            flag = true;
            InputNumber = double.Parse(NumberShow.Text);
            symbol = "1/x";
        }

        private void One_Click(object sender, EventArgs e)
        {
            if (flag == true)
            {
                NumberShow.Text = "";
                flag = false;
            }
            NumberShow.Text += "1";
        }

        private void Two_Click(object sender, EventArgs e)
        {
            if (flag == true)
            {
                NumberShow.Text = "";
                flag = false;
            }
            NumberShow.Text += "2";
        }

        private void Three_Click(object sender, EventArgs e)
        {
            if (flag == true)
            {
                NumberShow.Text = "";
                flag = false;
            }
            NumberShow.Text += "3";
        }

        private void Minus_Click(object sender, EventArgs e)
        {
            flag = true;
            InputNumber = double.Parse(NumberShow.Text);
            symbol = "-";
        }

        private void Zero_Click(object sender, EventArgs e)
        {
            if (flag == true)
            {
                NumberShow.Text = "";
                flag = false;
            }
            NumberShow.Text += "0";
        }

        private void Point_Click(object sender, EventArgs e)
        {
            flag = true;
            InputNumber = double.Parse(NumberShow.Text);
            symbol = ".";
        }

        private void Add_Click(object sender, EventArgs e)
        {
            flag = true;
            InputNumber = double.Parse(NumberShow.Text);
            symbol = "+";
        }

        private void Equal_Click(object sender, EventArgs e)
        {
            switch (symbol)
            {
                case "+": 
                    ShowResNumber = InputNumber + double.Parse(NumberShow.Text);
                    break;
                case "-": 
                    ShowResNumber = InputNumber - double.Parse(NumberShow.Text);
                    break;
                case "*": 
                    ShowResNumber = InputNumber * double.Parse(NumberShow.Text);
                    break;
                case "/": 
                    if(InputNumber == 0 )
                    {
                        NumberShow.Text = "除数不能为0";
                    }
                    else
                    {
                        ShowResNumber = InputNumber / double.Parse(NumberShow.Text);
                    }
                    break;
                case "sqrt": 
                    if(InputNumber < 0 )
                    {
                        NumberShow.Text = "被开方数不能小于0";
                    }
                    else
                    {
                        ShowResNumber = Math.Sqrt(InputNumber);
                    }
                    break;
                case "mod": 
                    ShowResNumber = InputNumber % double.Parse(NumberShow.Text);
                    break;
                case "1/x":
                    if (InputNumber == 0 )
                    {
                        NumberShow.Text = "除数不能为0";
                    }
                    else
                    {
                        ShowResNumber = 1 / InputNumber;
                    }
                    break;
                case "+-": 
                    ShowResNumber = -InputNumber;
                    break;
                case ".": 
                    ShowResNumber = double.Parse(InputNumber + "." + NumberShow.Text); 
                    break;
            }
            NumberShow.Text = ShowResNumber + "";
            flag = true;
        }
    }
}

3 实现效果