作业四则运算第二版提交

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

        private void Form1_Load(object sender, EventArgs e)
        {
            shuliang.Text = "10";
            chengchu.Text = "是";
            kuohao.Text = "否";
            amout1.Text = "0";
            amout2.Text = "100";
            fushu.Text = "是";
            xiaoshu.Text = "否";
            yushu.Text = "是";
            fenshu.Text = "否";
            hang.Text = "10";
            hangju.Text = "0";
        }
        Random ra = new Random(System.DateTime.Now.Millisecond);//时间毫秒数，取得随机数
        int rand(int num1, int num2)
        {
            int x;
           // Random ra = new Random(System.DateTime.Now.Millisecond);//时间毫秒数，取得随机数
            x = ra.Next(num1,num2);
            return x;
        }
        bool chongfu(int [] zu,int i,int num)
        {
            if(i==0)
            {
                return true;
            }
            else
            {
                int x=0,biaoji=1;
                while(x<i)
                {
                    if (zu[x] == num)
                    {
                        biaoji = 0;
                        break;
                    }
                    x++;
                }
                if (biaoji == 0)
                {
                    return false;
                }
                else
                {
                    return true;
                }
            }
            
        }
        bool cefushu(int num1, int num2,int ifushu)
        {
            if (ifushu ==0)
            {
                if (num1 >= num2)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            else
            {
                return true;
            }
        }
        bool ceyushu(int num1, int num2, int iyushu)
        {
            if (iyushu == 0)
            {
                if (num1%num2==0)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            else
            {
                return true;
            }
        }
        bool sushu(int num,int iyushu)  //检测是否是素数
        {
            if (iyushu == 1)
            {
                return false;
            }
            else
            {
                int i = 2, j = num / 2,biaoji=0;
                while (i <= j)
                {
                    if (num % i == 0)
                    {
                        biaoji = 1;
                        break;
                    }
                    i++;
                }
                if (biaoji == 1)
                {
                    return false;
                }
                else
                {
                    return true;
                }
            }
        }
        private void button1_Click(object sender, EventArgs e)
        {
            int ishuliang = Convert.ToInt16( shuliang.Text.Trim());
            int ichengchu,ikuohao,iamout1,iamout2,ifushu,iyushu,ifenshu,ixiaoshu,ihang,ihangju;//获取变量参数
            iamout1 = Convert.ToInt16(amout1.Text.Trim());
            iamout2 = Convert.ToInt16(amout2.Text.Trim());
            ihang = Convert.ToInt16(hang.Text.Trim());
            ihangju = Convert.ToInt16(hangju.Text.Trim());
            if (chengchu.Text.Trim() == "是")
            {
                ichengchu = 1;
            }
            else
            {
                ichengchu = 0;
            }
            if (kuohao.Text.Trim() == "是")
            {
                ikuohao = 1;
            }
            else
            {
                ikuohao = 0;
            }
            
            if (fenshu.Text.Trim() == "是")
            {
                ifenshu = 1;
            }
            else
            {
                ifenshu = 0;
            }
            if (fushu.Text.Trim() == "是")
            {
                ifushu = 1;
            }
            else
            {
                ifushu = 0;
            }
            if (yushu.Text.Trim() == "是")
            {
                iyushu = 1;
            }
            else
            {
                iyushu = 0;
            }
            if (xiaoshu.Text.Trim() == "是")
            {
                ixiaoshu = 1;
            }
            else
            {
                ixiaoshu = 0;
            }
            int i = 0,j=0;
            int num1, num2,p,num3,bj;
            int [] zu;
            string [] zufu={"+","-","*","/"};
            string[] zufu1 = { "+", "-" };
            zu=new int[ishuliang];
                while (i < ishuliang)
                {
                    j = 0;
                    num1 = rand(iamout1, iamout2);   //rand函数是生成一个随机数
                    while (true)
                    {
                        if (j >= ishuliang)
                        {
                            break;
                        }

                        if (chongfu(zu, i, num1))                //chongfu函数是检测产生的数与前面有木有重复
                        {
                            zu[i] = num1;
                            break;
                        }
                        num1 = rand(iamout1, iamout2);   //rand函数是生成一个随机数
                        j++;
                    }
                    string sign,sign1;
                    if (ichengchu == 1)
                    {
                        sign = zufu[rand(0, 4)];
                    }
                    else
                    {
                        sign = zufu1[rand(0, 2)];
                    }
                    if (sign == "/")
                    {
                        if (sushu(num1, iyushu))  //排除素数因素，否则会导致死循环
                        {
                            num2 = 1;
                        }
                        else
                        {
                            while (true)
                            {
                                num2 = rand(iamout1, iamout2);
                                if (num2 == num1) //为了排除出现同一个数相除这种简单的题目
                                {
                                    continue;
                                }
                                if (num2 != 0 && cefushu(num1, num2, ifushu) && ceyushu(num1, num2, iyushu))//num2!=0要放在最前面，防止ceyushu函数中除数为0
                                {
                                    break;
                                }
                            }
                        }
                    }
                    else if (sign == "-")
                    {
                        while (true)
                        {
                            num2 = rand(iamout1, iamout2);
                            if (cefushu(num1, num2, ifushu))
                            {
                                break;
                            }
                        }
                    }
                    else
                    {
                        num2 = rand(iamout1, iamout2);
                    }
                    bj = rand(0,3);
                    if (ikuohao == 1)  //选择有无括号
                    {
                        num3 = rand(iamout1, iamout2);
                        if (ichengchu == 1)
                        {
                            sign1 = zufu[rand(0, 4)];
                        }
                        else
                        {
                            sign1 = zufu1[rand(0, 2)];
                        }
                        if (bj == 0)
                        {
                            textBox1.Text += num1 + sign + num2 + sign1 + num3 + "=  ";
                        }
                        else if (bj == 1)
                        {
                            textBox1.Text += "(" + num1 + sign + num2 + ")" + sign1 + num3 + "=  ";
                        }
                        else
                        {
                            textBox1.Text += num1 + sign +"("+ num2 + sign1 + num3 + ")"+"=  ";
                        }
                    }
                    else
                    {
                        textBox1.Text += num1 + sign + num2 + "=  ";
                       
                    }
                    if (ihang == 0)    //设定每行题目的数量
                    {
                    }
                    else
                    {
                        if ((i % (ihang )) == (ihang-1))
                        {
                            p=0;
                            while(p<=ihangju)
                            {
                                textBox1.Text += "\r\n";   //设置行距
                                p++;
                            }
                        }
                    }
                    i++;
                }
            }
        private void button2_Click(object sender, EventArgs e) //清空
        {
            textBox1.Text = "";
        }
    }
}