简单计算机功能实现（Windows窗体系统---修改后~~~~）

这是修改后的内容 没啥难度 只是简单的将几个数组改为double类型 在写上小数点按钮的点击程序即可

以下代码

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

namespace 计算机
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        double[] num11 = new double[2];
        string signal;
        int num2 = 0;
        double result; 
        private void Num_Click(object sender, EventArgs e)
        {
            Button btn = (Button)sender;
            string num = btn.Text;

            textBox1.Text += num;
            num11[num2] = double.Parse(textBox1.Text); 
        }

        private void signal_Click(object sender, EventArgs e)
        {
            Button btn = (Button)sender;
            signal = btn.Text;
            textBox1.Text = "";


            if (result != 0)
            {
                num11[0] = result;
            }
            else
            {
                num2 = 1 - num2;
            }


        }

        private void button16_Click(object sender, EventArgs e)
        {
            if (signal == "+")
            {
                textBox1.Text = $"{num11[0]}+{num11[1]}=";
                result = num11[0] + num11[1];
                textBox1.Text += $"\n  {result}";
            }
            else if (signal == "-")
            {
                textBox1.Text = $"{num11[0]}-{num11[1]}=";
                result = num11[0] - num11[1];
                textBox1.Text += $"\n  {result}";
            }
            else if (signal == "*")
            {
                textBox1.Text = $"{num11[0]}*{num11[1]}=";
                result = num11[0] * num11[1];
                textBox1.Text += $"\n  {result}";
            }
            else if (signal == "/")
            {
                textBox1.Text = $"{num11[0]}/{num11[1]}=";
                result = num11[0] / num11[1];
                textBox1.Text += $"\n  {result}";
            }



        }
        private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Text = "";
            num2 = 1 - num2;
        }

        private void button15_Click(object sender, EventArgs e)
        {
            textBox1.Text += ".";
        }
    }

}