猜拳小遊戲

對於新手的我，如今搞不了大項目，只有從小實驗小項目一點一滴作起。今天就把本身寫的猜拳小遊戲給你們分享一下。適合新手一塊兒學習。。

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 _10._5石頭剪刀布
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            // button1.Click += (s, e) => { shitou(); };
            button2.Click += (s, e) => { jiandao(); };//別忘了，事件只能出如今+=、-=左邊
            button3.Click += (d, e) => { bu(); };
        }
        //其實button1.Click += (s, e) => { shitou(); };和下面的這寫法是同樣的
        private void button1_Click(object sender, EventArgs e)
        {
            shitou();
        }
        //石頭
        public void shitou()
        {
            label4.Text = button1.Text;
            label3.Text = bj(toint(), pc());
        }
        //剪刀
        public void jiandao()
        {
            label4.Text = button2.Text;
            label3.Text = bj(toint(), pc());
        }

        //布
        public void bu()
        {
            label4.Text = button3.Text;
            label3.Text = bj(toint(), pc());
        }

        /// <summary>
        /// 電腦隨機顯示，還有相應的值替代它
        /// </summary>
        /// <returns></returns>
        public int pc()
        {
            Random ran = new Random();
            int vpc = ran.Next(1, 4);
            // string strpc;//這樣寫會浪費資源，在堆中要開闢不少空間
            //這樣，每次調用pc方法時strpc都是初始爲空的。
            //重要的是string類型是引用類型。
            string strpc = string.Empty;//初始爲空
            switch (vpc)
            {
                case 1:
                    strpc = "石頭";
                    break;
                case 2:
                    strpc = "剪刀";
                    break;
                case 3:
                    strpc = "布";
                    break;
                default:
                    throw new Exception("未知錯誤");
            }
            label5.Text = strpc;
            return vpc;
        }
        /// <summary>        
        /// 把剪刀石頭布用數字表示
        /// </summary>
        /// <returns></returns>
        public int toint()
        {
            int n;
            switch (label4.Text)
            {
                case "石頭":
                    n = 1;
                    break;
                case "剪刀":
                    n = 2;
                    break;
                case "布":
                    n = 3;
                    break;
                default:
                    throw new Exception("出錯了");
            }
            return n;
        }
        //比較
        public string bj(int user, int pc)
        {
            int tmp = user - pc;
            string bj = string.Empty;
            if (tmp == 1 || tmp == -2)
            {
                bj = "你贏了";
            }
            else if (tmp == 0)
            {
                bj = "平局";
            }
            else
            {
                bj = "你輸了";
            }
            return bj;
        }
    }
}