软件工程第四次作业 结对编程 增量开发

一 需求分析

  本次的作业是基于上一次的作业,来做增量开发.如果把老师当成是用户,那么这次的作业要求就应该是用户需求。作业是创建一个四则混合运算,并要求出现括号,但需求里并没有出现括号应该加在哪里,所以我们把括号出现的位置交给用户来选择,也可已选择没有括号,使其更加的人性化。用户自由程度更高,并且还可以自由的控制计算的时间,题目的总数和出现数字的大小。把这些选择完全的交给用户来做,不管用户是一年级的学生 还是学过括号的学生,这个软件都比较适合他们。

二 设计思路

 

     1 用户第一步可以先自由设定题目的数量(我感觉设定题目数就不应该再设置测试时间,二者应该只存在一个,但我的小伙伴,还是坚持。在他的坚持下,我发现这样做也并不是全无道理,毕竟不设置题目总数还是可以运行,增加了用户的选择空间。)  测试时间,随机数产生的范围,括号出现的位置等。

 

 

     2 如果用户没有进行相关内容的设置,(PS题目数量用户不设置也可以进行下一步)那么系统会自动进行提示,这样可以使软件与客户的交互性更强,进而更加符合用户的使用习惯。

 

3 用户相关内容设置完毕,并且点击计时开始按钮,系统会根据用户设定的相关内容,自动产生符合用户的随机数、题目数量和测试时间等,那么,接下来用户就可以进行系统给出的相关内容进行计算。

 

4 当用户设置的测试时间或者题目数量进行完毕时,那么系统会自动给出提示,并且统计和显示出来题目总数,题目正确数,题目错误数,题目正确率,做题速度等内容。当用户点击结束按钮的时候,程序也会结束,并打开form2窗体。

 

 三 代码书写

   Form1代码:

 

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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 sizeyunsuan
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public static int count = 0; //定义题目总数,正确数,四则运算等变量
        public static int right = 0;
        public static int sum;
        public static int lefttime;
        public static int m1, m2;
        public static int time;
        public void RandomNum() //定义随机产生随机数的方法
        {
            try
            {
                Random ran = new Random();
                int n1, n2,n3;
                m1 = Convert.ToInt32(textBox5.Text);
                m2 = Convert.ToInt32(textBox6.Text);
                n1 = ran.Next(m1, m2);
                n2 = ran.Next(m1, n1);
                n3 = ran.Next(m1, n2);
                textBox2.Text = n1.ToString();
                textBox3.Text = n2.ToString();
                textBox1.Text = n3.ToString();
                textBox4.Text = ""; 
            }
            catch (Exception ex)
            {
                MessageBox.Show("请输入数值范围");
            }
        }
        public void fuhao() //定义随机产生符号的方法
        {
            Random ran = new Random();
            int   n1, n2;
            n1 = ran.Next(1,5);
            n2 = ran.Next(1,5);
            if ((n1 == 1))
            {
                label2.Text = "+";
                 
            }
            if ((n1 == 2))
            {
                label2.Text = "-";
                
            }
            if ((n1 == 3))
            {
                label2.Text = "*";
               
            }
            if ((n1 == 4))
            {
                label2.Text = "/";
                
            }
            if ((n2 == 1))
            {
                label3.Text = "+";

            }
            if ((n2 == 2))
            {
                label3.Text = "-";

            }
            if ((n2 == 3))
            {
                label3.Text = "*";

            }
            if ((n2 == 4))
            {
                label3.Text = "/";

            }
        }
        private void button1_Click(object sender, EventArgs e) //计时开始按钮的单击事件
        {
            int minute;
            try
            {
                minute = int.Parse(this.textBox7.Text);
            }
            catch (System.Exception ex)
            {
                this.label8.Text = "输入错误";
                return;
            }
            lefttime = minute;
            this.timer1.Interval = 1000;
            this.timer1.Enabled = true;
            this.timer1.Start();
            fuhao();
            RandomNum();
        }
        private void textBox4_KeyDown(object sender, KeyEventArgs e) //触发enter键的事件
        {             
               
                int n = Convert.ToInt32(textBox8.Text);
                int result;                                       
                int a = (int.Parse(textBox2.Text));
                int b = (int.Parse(textBox3.Text));
                int c = (int.Parse(textBox1.Text));
                string m = label2.Text + label3.Text;
                if((label1.Text == "")&&(label13.Text == "")&&(label16.Text == "")&&(label15.Text == "")) //无括号的运算方式
               {
                switch (m)
                {
                    case "+-":
                        sum = a + b - c;
                        break;
                    case "++":
                        sum = a + b + c;
                        break;
                    case "+*":
                        sum = a + b * c;
                        break;
                    case "+/":
                        sum = a + b * c;
                        break;
                    case "--":
                        sum = a - b - c;
                        break;
                    case "-+":
                        sum = a - b + c;
                        break;
                    case "-*":
                        sum = a - b * c;
                        break;
                    case "-/":
                        sum = a + b /c;
                        break;
                    case "*-":
                        sum = a *b - c;
                        break;
                    case "*+":
                        sum = a * b + c;
                        break;
                    case "**":
                        sum = a * b * c;
                        break;
                    case "*/":
                        sum = a *b /c;
                        break;
                    case "/-":
                        sum = a / b - c;
                        break;
                    case "/+":
                        sum = a / b + c;
                        break;
                    case "/*":
                        sum = a / b * c;
                        break;
                    case "//":
                        sum = a / b /c;
                        break;
                    default:
                        break;
                }
            }
                if ((label1.Text == "(") && (label13.Text == ")") ) //前两个数字有括号的方法
                {
                    switch (m)
                    {
                        case "+-":
                            sum = (a + b) - c;
                            break;
                        case "++":
                            sum = (a + b )+ c;
                            break;
                        case "+*":
                            sum = (a + b) * c;
                            break;
                        case "+/":
                            sum = (a + b) * c;
                            break;
                        case "--":
                            sum = (a - b) - c;
                            break;
                        case "-+":
                            sum = (a - b) + c;
                            break;
                        case "-*":
                            sum = (a - b) * c;
                            break;
                        case "-/":
                            sum = (a + b) / c;
                            break;
                        case "*-":
                            sum = (a * b) - c;
                            break;
                        case "*+":
                            sum = (a * b) + c;
                            break;
                        case "**":
                            sum = (a * b) * c;
                            break;
                        case "*/":
                            sum = (a * b) / c;
                            break;
                        case "/-":
                            sum = (a / b )- c;
                            break;
                        case "/+":
                            sum = (a / b) + c;
                            break;
                        case "/*":
                            sum = (a / b) * c;
                            break;
                        case "//":
                            sum = (a / b) / c;
                            break;
                        default:
                            break;
                    }
                }
                if ((label16.Text == "(") && (label15.Text == ")")) //后两个数字有括号
                {
                    switch (m)
                    {
                        case "+-":
                            sum = a + (b - c);
                            break;
                        case "++":
                            sum = a + (b + c);
                            break;
                        case "+*":
                            sum = a + (b * c);
                            break;
                        case "+/":
                            sum = a + (b * c);
                            break;
                        case "--":
                            sum = a - (b - c);
                            break;
                        case "-+":
                            sum = a - (b + c);
                            break;
                        case "-*":
                            sum = a - (b * c);
                            break;
                        case "-/":
                            sum = a + b / c;
                            break;
                        case "*-":
                            sum = a * (b - c);
                            break;
                        case "*+":
                            sum = a * (b + c);
                            break;
                        case "**":
                            sum = a * (b * c);
                            break;
                        case "*/":
                            sum = a *( b / c);
                            break;
                        case "/-":
                            sum = a / (b - c);
                            break;
                        case "/+":
                            sum = a /( b + c);
                            break;
                        case "/*":
                            sum = a / (b * c);
                            break;
                        case "//":
                            sum = a / (b / c);
                            break;
                        default:
                            break;
                    }
                }
                        if (e.KeyCode == Keys.Enter)  //判断输入值是否为数字
                        {
                            if (int.TryParse(textBox4.Text, out result) == false)
                            {
                                MessageBox.Show("请输入数字");
                                count++;
                            }
                            else
                            {
                                if (textBox4.Text == sum.ToString())
                                {
                                    right++;
                                    count++;
                                    RandomNum();
                                    fuhao();
                                }
                                else
                                {
                                    count++;
                                    RandomNum();
                                    fuhao();
                                }
                            }
                         }
                        if (n == count) //判断题目数量,是否结束运算
                        {
                            MessageBox.Show("题目答完,请重新开始");
                            textBox3.Enabled = false;
                            Form2 frm2 = new Form2();
                            frm2.ShowDialog();
                            this.Close();
                        }
            }
      
        private void button2_Click(object sender, EventArgs e) //点击结束按钮事件
        {
            textBox3.Enabled = false;
            Form2 frm2 = new Form2();
            frm2.ShowDialog();
            this.Close();
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {
            this.label3.Text = this.textBox1.Text;
        }

        public void timer1_Tick(object sender, EventArgs e )//定义计时器
        {
            time = Convert.ToInt32(textBox7.Text);
            if (lefttime <= 0)
            {
                timer1.Enabled = false;
                MessageBox.Show("答题时间到!");
                textBox4.Enabled = false;
                Form2 frm2 = new Form2();
                frm2.ShowDialog();
            }
            this.label8.Text = "剩余时间" + lefttime.ToString() + "秒";
            lefttime--; 
        }
        private void button3_Click(object sender, EventArgs e)
        {
            label1.Text = "(";
            label13.Text = ")";


        }

        private void button4_Click(object sender, EventArgs e)
        {
            label16.Text = "(";
            label15.Text = ")";
        }

        private void button5_Click(object sender, EventArgs e)
        {
            label1.Text = "";
            label13.Text = "";
            label16.Text = "";
            label15.Text = "";
        }

        
    }
}
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 Form2代码:

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

        private void Form2_Load(object sender, EventArgs e)
        {
            textBox1.Text = Form1.count.ToString();
            textBox2.Text = Form1.right.ToString();
            textBox3.Text = ((Form1.count - (double)(Form1.right))).ToString();
            textBox4.Text = ((Form1.right / (double)(Form1.count)) * 100).ToString("f2") + "%";
            textBox5.Text = (((Form1.time) - (Form1.lefttime)) / (double)(Form1.count)).ToString("f2");
            textBox6.Text = ((Form1.time) - (Form1.lefttime)).ToString();
        }
    }
}
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四 PSP分析

 

 

五 代码测试

 

六  这是我们一起工作的照片。

八  总结

      这次的增量开发,实在是太难了,我们两个写了好多的代码,考虑了很多的计算组合,一条一条的写,想想都感觉都头疼,不过当软件做出来的时候,那种感觉也是超爽的。

一:基础知识很重要,一定要掌握牢固。

二:两人的配合也很重要。

三:在开发的过程中,如果有什么问题,两个人一定要及时的沟通。

     

posted @ 2015-10-28 14:34  剑藏锋  阅读(275)  评论(2编辑  收藏  举报