作业4

结对编程项目--四则运算

1.同伴信息：

班级：13级计科一班

姓名：徐小康

学号：130201138

2.基本功能

本次作业是在上次作业的基础之上完成的，也是上次作业的升华。在建立的窗体中你自己可以确定你想出题的数目，并且你也可以确定数值的范围。出题的范围可以是加，减，乘，除任意的，可以是整数也可以是分数。

3.作业总结

本次作业对我来说还是有一定的难度的，作业也有一些功能没有完成比如只能抽出题目，但是没有答案的显示。希望经过这个学期的学习我可以更加的进步，并且更好的完成接下来的每一次作业。

4.程序截图

1）窗体布局截图

2）程序运行截图

5.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.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

     
        public void Integerdivide()
        {
            String getmax = textMin.Text;
            int minnum = Convert.ToInt32(getmax);  //最小范围设定

            String getmin = textMax.Text;
            int maxnum = Convert.ToInt32(getmin);  //最大范围设定

            Random R = new Random();  //取随机数

            int den1, den2, num1, num2;
            den1 = R.Next(minnum, maxnum);
            num1 = R.Next(minnum, den1);
            den2 = R.Next(minnum, maxnum);
            num2 = R.Next(minnum, den2);


            if (den2 != 0)
                list.Items.Add(den1 + "/" + "(" + den2 + ")" + "=");
            else
            {
                list.Items.Add(den2 + "/" + "(" + den1 + ")" + "=");

            }
        }

        
        public void Fractionadd()
        {
            String getmax = textMin.Text;
            int minnum = Convert.ToInt32(getmax);  

            String getmin = textMax.Text;
            int maxnum = Convert.ToInt32(getmin);  

            Random R = new Random();  

            int den1, den2, num1, num2;
            den1 = R.Next(minnum, maxnum);
            num1 = R.Next(minnum, den1);
            den2 = R.Next(minnum, maxnum);
            num2 = R.Next(minnum, den2);


            if (den1 != 0) 
            {
                if (den2 != 0)
                {
                    list.Items.Add("(" + num1 + "/" + den1 + ")" + "+" + "(" + num2 + "/" + den2 + ")" + "=");
                }
                else if (den2 == 0)
                {
                    list.Items.Add("(" + num1 + "/" + den1 + ")" + "+" + "(" + den2 + "/" + num2 + ")" + "=");
                }
            }
            else   
            {
                if (den2 != 0)
                {
                    list.Items.Add("(" + den1 + "/" + num1 + ")" + "+" + "(" + num2 + "/" + den2 + ")" + "=");
                }
                else if (den2 == 0)
                {
                    list.Items.Add("(" + den1 + "/" + num1 + ")" + "+" + "(" + den2 + "/" + num2 + ")" + "=");
                }
            }
        }

       
        public void Fractiondelete()
        {
            String getmax = textMin.Text;
            int minnum = Convert.ToInt32(getmax); 

            String getmin = textMax.Text;
            int maxnum = Convert.ToInt32(getmin); 

            Random R = new Random(); 

            int den1, den2, num1, num2;
            den1 = R.Next(minnum, maxnum);
            num1 = R.Next(minnum, den1);
            den2 = R.Next(minnum, maxnum);
            num2 = R.Next(minnum, den2);


            if (den1 != 0) 
            {
                if (den2 != 0)
                {
                    list.Items.Add("(" + num1 + "/" + den1 + ")" + "-" + "(" + num2 + "/" + den2 + ")" + "=");
                }
                else if (den2 == 0)
                {
                    list.Items.Add("(" + num1 + "/" + den1 + ")" + "-" + "(" + den2 + "/" + num2 + ")" + "=");
                }
            }
            else  
            {
                if (den2 != 0)
                {
                    list.Items.Add("(" + den1 + "/" + num1 + ")" + "-" + "(" + num2 + "-" + den2 + ")" + "=");
                }
                else if (den2 == 0)
                {
                    list.Items.Add("(" + den1 + "/" + num1 + ")" + "-" + "(" + den2 + "/" + num2 + ")" + "=");
                }
            }
        }

       
        public void Fractionmultiply()
        {
            String getmax = textMin.Text;
            int minnum = Convert.ToInt32(getmax);  

            String getmin = textMax.Text;
            int maxnum = Convert.ToInt32(getmin);  

            Random R = new Random(); 

            int den1, den2, num1, num2;
            den1 = R.Next(minnum, maxnum);
            num1 = R.Next(minnum, den1);
            den2 = R.Next(minnum, maxnum);
            num2 = R.Next(minnum, den2);


            if (den1 != 0)
            {
                if (den2 != 0)
                {
                    list.Items.Add("(" + num1 + "/" + den1 + ")" + "*" + "(" + num2 + "/" + den2 + ")" + "=");
                }
                else if (den2 == 0)
                {
                    list.Items.Add("(" + num1 + "/" + den1 + ")" + "*" + "(" + den2 + "/" + num2 + ")" + "=");
                }
            }
            else  
            {
                if (den2 != 0)
                {
                    list.Items.Add("(" + den1 + "/" + num1 + ")" + "*" + "(" + num2 + "/" + den2 + ")" + "=");
                }
                else if (den2 == 0)
                {
                    list.Items.Add("(" + den1 + "/" + num1 + ")" + "*" + "(" + den2 + "/" + num2 + ")" + "=");
                }
            }
        }

      
        public void Fractiondivide()
        {

            String getmax = textMin.Text;
            int minnum = Convert.ToInt32(getmax);  

            String getmin = textMax.Text;
            int maxnum = Convert.ToInt32(getmin);  

            Random R = new Random();

            int den1, den2, num1, num2;
            den1 = R.Next(minnum, maxnum);
            num1 = R.Next(minnum, den1);
            den2 = R.Next(minnum, maxnum);
            num2 = R.Next(minnum, den2);


            if (den1 != 0) 
            {
                if (den2 != 0)
                {
                    list.Items.Add("(" + num1 + "/" + den1 + ")" + "/" + "(" + num2 + "/" + den2 + ")" + "=");
                }
                else if (den2 == 0)
                {
                    list.Items.Add("(" + num1 + "/" + den1 + ")" + "/" + "(" + den2 + "/" + num2 + ")" + "=");//换
                }
            }
            else  
            {
                if (den2 != 0)
                {
                    list.Items.Add("(" + den1 + "/" + num1 + ")" + "/" + "(" + num2 + "/" + den2 + ")" + "=");
                }
                else if (den2 == 0)
                {
                    list.Items.Add("(" + den1 + " / " + num1 + ")" + "/" + "(" + den2 + "/" + num2 + ")" + "=");
                }
            }
        }

         private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            String getnum = textIn.Text;
            int num = Convert.ToInt32(getnum);  //输入题目数

            String getmax = textMin.Text;
            int minnum = Convert.ToInt32(getmax);  //最小数设定

            String getmin = textMax.Text;
            int maxnum = Convert.ToInt32(getmin);  //最大数设定

            int i;

            Random R = new Random();  
            int import = 0;  

            for (i = 0; i < num; i++)
            {
                int den1, den2, num1, num2;
                den1 = R.Next(minnum, maxnum);
                num1 = R.Next(minnum, den1);
                den2 = R.Next(minnum, maxnum);
                num2 = R.Next(minnum, den2);

                import = R.Next(0, 8);  

                switch (import)
                {

                    case 0: list.Items.Add(den1 + "+" + "(" + den2 + ")" + "="); break;
                    case 1: list.Items.Add(den1 + "-" + "(" + den2 + ")" + "="); break;
                    case 2: list.Items.Add(den1 + "*" + "(" + den2 + ")" + "="); break;

                    case 3: Integerdivide(); break; //整数除法

                    case 4: Fractionadd(); break; //分数加法

                    case 5: Fractiondelete(); break; //分数减法

                    case 6: Fractionmultiply(); break;//分数乘法

                    case 7: Fractiondivide(); break; //分数除法

                }
            } 

        }


    }
}