using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace PlayGame{ class Player { public int showFist(string str) { int num = 0; switch (str) { case "剪刀": num = 1; break; case "石頭": num = 2; break; case "布": num = 3; break; } return num; } }}

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace PlayGame{ class Computer { /// <summary> /// 存儲(chǔ)電腦出的拳頭 /// </summary> public string fist { get; set; } public int cpuShowFist() { Random r = new Random(); int cnum=r.Next(1,4); switch(cnum) { case 1: this.fist = "剪刀"; break; case 2: this.fist = "石頭"; break; case 3: this.fist = "布"; break; } return cnum; } }}

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace PlayGame{ class Judge { public enum Result {  電腦贏,玩家贏,平局 } public static Result caipan(int playerNum, int cpuNum) { if ((playerNum - cpuNum) == 1 || (playerNum - cpuNum) == -2) return Result.玩家贏; else if((playerNum-cpuNum)==0) return Result.平局; else return Result.電腦贏; } }}

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 PlayGame{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void btncut_Click(object sender, EventArgs e) { NewMethod(btncut.Text); } private void NewMethod(string str) { lblPlayer.Text = str; Player player = new Player(); int playerNum = player.showFist(str); Computer cpu = new Computer(); int cpuNum = cpu.cpuShowFist(); lblComputer.Text = cpu.fist; PlayGame.Judge.Result res = Judge.caipan(playerNum, cpuNum); lblJudge.Text = res.ToString(); } private void btnstone_Click(object sender, EventArgs e) { NewMethod(btnstone.Text); } private void btnbu_Click(object sender, EventArgs e) { NewMethod(btnbu.Text); } }}