结对编程项目--四则运算

1.同伴信息

王硕朋，计科13-1，学号：130201124

2.基本功能

这次作业是四则运算，就是加减乘除之间运算，通俗简单。

3.程序截图

1）窗体布局截图

2）程序运行截图

4.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 + ")" +