定义一个Strategy接口,其中定义一个方法,用于计算
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Calculation { interface Interface1 { int calculate(int a, int b); } }
定义具体的算法类,实现Strategy接口,算法类中的算法各自不同:加减乘等
1,加法类
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Calculation { class Add:Interface1 { public int calculate(int a, int b) { return a + b; } } }
2,减法类
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Calculation { class Subtract : Interface1 { public int calculate(int a, int b) { return a - b; } } }
3,乘法类
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Calculation { class Multiply:Interface1 { public int calculate(int a, int b) { return a * b; } } }
4,除法类
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Calculation { class Except:Interface1 { public int calculate(int a, int b) { return a / b ; } } }
定义具体的环境角色
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Calculation { class Environment { private Interface1 inter; public Environment(Interface1 face) { inter = face; } public Interface1 gewrt() { return inter; } public void setwrt(Interface1 face) { inter=face; } public int calculate(int a, int b) { return inter.calculate(a, b); } } }
form1的代码
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace Calculation { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { displays(); } private void displays() { Random random = new Random(); int a, b; a = random.Next(0, 100); b = random.Next(0, 100); fasttext.Text = a.ToString(); lasttext.Text = b.ToString(); string[] operjact = new string[] { "+", "-", "*", "/" }; string f = operjact[new Random().Next(0, 4)]; operja.Text = f; } private void textBox3_KeyDown(object sender, KeyEventArgs e) { int a = int.Parse(fasttext.Text); int b = int.Parse(lasttext.Text); if (e.KeyCode == Keys.Enter) { int answer = int.Parse(textBox3.Text); string OPter=operja.Text; switch (OPter) { case "+": Add addss = new Add(); Environment environment = new Environment(addss); environment.calculate(a, b); if (answer == environment.calculate(a, b)) { MessageBox.Show("回答正确!"); } else { MessageBox.Show("回答错误!"); } break; case "-": Subtract subtrss = new Subtract(); Environment environment1 = new Environment(subtrss); environment1.calculate(a,b); if (answer == environment1.calculate(a, b)) { MessageBox.Show("回答正确!"); } else { MessageBox.Show("回答错误!"); } break; case "*": Multiply muli = new Multiply(); Environment environment2 = new Environment(muli); environment2.calculate(a, b); if (answer == environment2.calculate(a, b)) { MessageBox.Show("回答正确!"); } else { MessageBox.Show("回答错误!"); } break; case "/": Except except = new Except(); Environment enviroment3 = new Environment(except); enviroment3.calculate(a, b); if(answer==enviroment3.calculate(a,b)) { MessageBox.Show("回答正确!"); } else { MessageBox.Show("回答错误!"); } break; } textBox3.Clear(); displays(); } } } }
总结:
两个数是让它随机产生的,运算符是随机产生的,无法保证除以零的情况。总的来说这些代码套来套去的有点发晕。不知道自己写的怎么样。
其中有一部分代码不太明白感觉没什么用?
public Interface1 gewrt() { return inter; } public void setwrt(Interface1 face) { inter=face; }
就把他们删了试着运行了一下,还是可以正常运行。
时间: 2024-08-10 15:10:23