策略模式

封装

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 出题
{
    class calcuall
    {
        Calculator calculator = new Calculator();
        private string opreator2;
        public string Operator2
        {
            set
            {
                opreator2 = value;
            }
        
        }
        public void cal()
        {
            if (opreator2 == "+")
            {
                calculator.Add();
            }
            if (opreator2 == "-")
            {
                calculator.sub();
            }
            if (opreator2 == "/")
            {
                calculator.division();
            }
            if (opreator2 == "*")
            {
                calculator.multiplication();
            }
         
        }
            
    
    }
}

策略

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 出题
{
    class Calculator
    {
        private int z;
        private int x;
        private int y;
        private string operator1;
        private int answer;
        public int X
        {
           
            set
            {
                x = value;
            }
        }
        public int Y
        {
            set
            {
                y = value;
            }
        }
        public string Operator1
        {
            set
            {
                operator1 = value;
            }
        }
        public int Answer
        {
            get
            {
                return answer;
            }
        }
        public void Add()
        {
            answer= x + y;
 
        }
        public void sub()
        {
            if (x > y)
            {

                answer = x - y;
            }
            else
            {
                z = y;
                y = x;
                x = z;
                answer = x - y;
            }
               
        }
        public void multiplication()
        {
            answer = x * y;
        }
        public void division()
        {
            if (y == 0)
            {
                z = y;
                y = x;
                x = z;
                answer = x / y;
            }
            else
            {
                answer = x / y;
            }
        }

    }
}

from1

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;
using System.IO;


namespace 出题
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }


        private void button1_Click(object sender, EventArgs e)
        {
            string fnm = @"one";
            string fnmm = @"tow";
            string fnmn = @"fuhao";
            Writeclear write1 = new Writeclear(fnm,fnmm,fnmn);
            write1.X = textBox1.Text;
            write1.Y = textBox2.Text;
            write1.Operator1 = comboBox1.Text;
            write1.write();
            textBox1.Clear();
            textBox2.Clear(); 

        }

        private void button2_Click(object sender, EventArgs e)
        {
            Form2 fam = new Form2();
            fam.ShowDialog();
         
        }

        private void button3_Click(object sender, EventArgs e)
        {

            string fnm = @"one";
            string fnmm = @"tow";
            string fnmn = @"fuhao";         
            Writeclear write1 = new Writeclear(fnm, fnmm, fnmn); 
            write1.clear();
        }
      
 
        }
    }

from2

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;
using System.IO;

namespace 出题
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        int i=1;
       public static int count = -1;
       public static int right = 0;
        private void timer1_Tick(object sender, EventArgs e)
        {
            try
            {
                int t = int.Parse(textBox5.Text);
                if (t <= 0)
                {
                    timer1.Enabled = false;
                    textBox5.Enabled = false;
                    MessageBox.Show("时间到了！");
                    Form3 fr3 = new Form3();
                    fr3.ShowDialog();

                }
                t = t - 1;
                textBox5.Text = t.ToString();

            }
            catch
            {
 
            }

        }

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                string t = textBox5.Text;
                textBox5.Text = t;
                timer1.Enabled = true;
                timer1.Interval = 1000;
                timer1.Start();
            }
            catch
            { 

            }
            baaa();
            count++;
        

        }

        private void textBox4_KeyDown(object sender, KeyEventArgs e)
        { 
            Calculator calculator=new Calculator();
            calcuall cal=new calcuall();
            calculator.X=int.Parse(textBox1.Text);
            calculator.Y=int.Parse(textBox3.Text);
            calculator.Operator1=textBox2.Text;
            cal.Operator2=textBox2.Text;                     
            if (e.KeyCode == Keys.Enter)
            {
                if (textBox4.Text ==calculator.Answer.ToString() )
                {
                    MessageBox.Show("回答正确！");
                    right++;

                }
                else
                {
                    MessageBox.Show("回答错误！");
                }
              
              textBox4.Clear();
              baaa();
              count++;
          
            }
            
            
        }

        private void button3_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            textBox5.Enabled = false;
            Form3 fonn = new Form3();
            fonn.ShowDialog();
        }
        private void baaa()
        {
            string[] line = File.ReadAllLines("one");
            if (i < line.Length)
            {
                textBox1.Text = line[i];
                string[] lines = File.ReadAllLines("tow");
                textBox3.Text = lines[i];
                string[] lin = File.ReadAllLines("fuhao");
                textBox2.Text = lin[i];

            }
            i++;
            if (i == line.Length + 1)
            {
                Form3 fonn = new Form3();
                fonn.ShowDialog();

            }
        }

    }
}

from3

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 出题
{
    public partial class Form3 : Form
    {
        public Form3()
        {
            InitializeComponent();
        }

        private void Form3_Load(object sender, EventArgs e)
        {
            textBox1.Text = Form2.right.ToString();
            textBox2.Text = Form2.count.ToString();
            textBox3.Text = ((Form2.right / (double)(Form2.count)) * 100).ToString() + "%";
        }
    }
}