0503 C#計算機作業

資管二甲 U1035128 郭璟塘

一 C#程式碼

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 WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        Double value = 0; 
        String operation = ""; 
        bool operation_pressed = false;  
        public Form1(){
            InitializeComponent();
        }
        private void button_Click(object sender, EventArgs e){
            if ((result.Text == "0") || (operation_pressed)) 
                result.Clear();
            operation_pressed = false;
            Button b = (Button)sender;
            result.Text = result.Text + b.Text;
        }
        private void button18_Click(object sender, EventArgs e){
            result.Text = "0";
        }
        private void operator_click(object sender, EventArgs e){
            Button b = (Button)sender;
            operation = b.Text;
            value = Double.Parse(result.Text);
            operation_pressed = true;
        }
        private void button10_Click(object sender, EventArgs e){
            switch (operation){ //判斷+*/ 計算
                case "+":
                    result.Text = (value + Double.Parse(result.Text)).ToString();
                    break;
                case "-":
                    result.Text = (value - Double.Parse(result.Text)).ToString();
                    break;
                case "*":
                    result.Text = (value * Double.Parse(result.Text)).ToString();
                    break;
                case "/":
                    result.Text = (value / Double.Parse(result.Text)).ToString();
                    break;
                default:
                    break;
            }
            operation_pressed = false;
        }
        private void button17_Click(object sender, EventArgs e){
            result.Clear();
            value = 0;
        }
        private void button1_Click(object sender, EventArgs e){
            Button b = (Button)sender;
            result.Text = result.Text + b.Text;
        }
        private void button17_Click_1(object sender, EventArgs e){   //一開始畫面顯示0
            result.Text = "0";  
        }
    }
}

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