四则运算3

#include<iostream>
#include "stdlib.h"
#include "time.h"
#include "jisuan.h"
#include "iomanip"
using namespace std;
//判断回答是否正确
bool YorN(jisuan &Q, int answer)
{
    if (Q.sign == 0)
    {
        Q.answer = Q.num1 + Q.num2;
    }
       else if (Q.sign == 1)
             {
                 Q.answer = Q.num1 - Q.num2;
             }
       else if (Q.sign == 2)
             {
                 Q.answer = Q.num1*Q.num2;
             }
         else
                 Q.answer = Q.num1 / Q.num2;
         if (answer == Q.answer)
                 return true;
         else
                 return false;
     }
//重新生成算术题
void ReBuild(jisuan &Q)
{
         if (para[4] == 1)
                Q.sign = rand() % 4;
        else
                Q.sign = rand() % 2;
        Q.num1 = rand() % (para[6] - para[5] + 1) + para[5];
        Q.num2 = rand() % (para[6] - para[5] + 1) + para[5];
}
//*****输出函数*****
void Display1(LinkC C, jisuan &Q)
{
        int temp, count = 0;                                    //count记录重新生成题目的次数
        for (int i = 1; i <= para[1]; i++)
           {
               cout << "(" << i << ")";
               if (para[4] == 1)
                         Q.sign = rand() % 4;                            //有乘除法
                 else
                        Q.sign = rand() % 2;                            //没有乘除法
                Q.num1 = rand() % (para[6] - para[5] + 1) + para[5];        //随机的(下限~上限)以内的整数
                Q.num2 = rand() % (para[6] - para[5] + 1) + para[5];
         RB:        ReBuild(Q);                                        //检查是否有出过的题目
                 if (count>((para[6] - para[5] + 1)*(para[6] - para[5] + 1) * 100))
                     {
                     cout << endl << "该难度的题目已出完，请更改出题设置！" << endl;
                    break;
               }
            switch (Q.sign)
                {
                         case 0:
                                 if (ExistQues(C, Q))
                                 {
                                     count++;
                                    goto RB;
                                }
                             cout << Q.num1 << "+" << Q.num2 << "=" << setw(5);
                            break;
                            case 1:
                               if ((para[7] == 0) && (Q.num1<Q.num2))
                                     {                                        //若为负数，则交换
                                         temp = Q.num1;
                                               Q.num1 = Q.num2;
                                           Q.num2 = temp;
                                    }
                                    if (ExistQues(C, Q))
                                     {
                                        count++;
                                         goto RB;
                                    }
                                 cout << Q.num1 << "-" << Q.num2 << "=" << setw(5); break;
                             case 2:
                                         if (ExistQues(C, Q))
                                 {
                                         count++;
                                             goto RB;
                                             }
                                         cout << Q.num1 << "*" << Q.num2 << "=" << setw(5); break;
                                    case 3:
                 while (Q.num2 == 0)
                                                 Q.num2 = rand() % (para[6] - para[5] + 1) + para[5];
                                           if (!para[8])
                                             {
                                                 while ((Q.num1%Q.num2) != 0 || Q.num2 == 0)
                                                {                                        //重新生成
                                                       Q.num1 = rand() % (para[6] - para[5] + 1) + para[5];
                                                   Q.num2 = rand() % (para[6] - para[5] + 1) + para[5];
                                                }
                                            }
                                  if (ExistQues(C, Q))
                                            {
                                            count++;
                                                goto RB;
                                        }
                                         cout << Q.num1 << "/" << Q.num2 << "=" << setw(5); break;
                            }
            InsertQues(C, Q);
            if (i%para[2] == 0)                                    //一行打印完规定列数，换行
                     for (int j = 0; j <= para[3]; j++)
                         cout << endl;
         }
    cout << endl << endl;
 }
 //回答题目函数
void Display2(LinkC C, jisuan &Q)
{
    int temp, count = 0, answer = 0, right = 0;                    //count记录重新生成题目的次数
        for (int i = 1; i <= para[1]; i++)
        {
            cout << "(" << i << ")";
             if (para[4] == 1)
                     Q.sign = rand() % 4;                            //有乘除法
                 else
                     Q.sign = rand() % 2;                            //没有乘除法
             Q.num1 = rand() % (para[6] - para[5] + 1) + para[5];                        //随机的(下限~上限)以内的整数
             Q.num2 = rand() % (para[6] - para[5] + 1) + para[5];
     RB:        ReBuild(Q);                                        //检查是否有出过的题目
                if (count>((para[6] - para[5] + 1)*(para[6] - para[5] + 1) * 100))
                {
                         cout << endl << "该难度的题目已出完，请更改出题设置！" << endl;
                         break;
                 }
             switch (Q.sign)
                    {
                        case 0:
                             if (ExistQues(C, Q))
                                    {
                                       count++;
                                    goto RB;
                                 }
                             cout << Q.num1 << "+" << Q.num2 << "=";
                                cin >> answer;
                             if (YorN(Q, answer))
                                {
                                    cout << "\t正确";
                                    right++;
                                }
                        else
                                     cout << "\t错误";
                            break;
                        case 1:
                                if ((para[7] == 0) && (Q.num1<Q.num2))
                                       {                                        //若为负数，则交换
                                                 temp = Q.num1;
                                                 Q.num1 = Q.num2;
                                                 Q.num2 = temp;
                                         }
                                    if (ExistQues(C, Q))
                                     {
                                             count++;
                                             goto RB;
                                         }
                                    cout << Q.num1 << "-" << Q.num2 << "=";
                                     cin >> answer;
                                     if (YorN(Q, answer))
                                        {
                                             cout << "\t正确";
                                             right++;
                                         }
                                    else
                                             cout << "\t错误";
                                    break;
                             case 2:
                                         if (ExistQues(C, Q))
                                             {
                                                 count++;
                                                 goto RB;
                                             }
                                        cout << Q.num1 << "*" << Q.num2 << "=";
                                         cin >> answer;
                                         if (YorN(Q, answer))
                                             {
                                                cout << "\t正确";
                                                 right++;
                                             }
                                            cout << "\t错误";
                                         break;
                                     case 3:
                                             while (Q.num2 == 0)
                                                     Q.num2 = rand() % (para[6] - para[5] + 1) + para[5];
                                            if (!para[8])
                                                 {
                                                     while ((Q.num1%Q.num2) != 0 || Q.num2 == 0)
                                                         {                                        //重新生成
                                                             Q.num1 = rand() % (para[6] - para[5] + 1) + para[5];
                                                             Q.num2 = rand() % (para[6] - para[5] + 1) + para[5];
                                                         }
                                                }
                                            if (ExistQues(C, Q))
                                                 {
                                                     count++;
                                                     goto RB;
                                                 }
                                            cout << Q.num1 << "/" << Q.num2 << "=";
                                             cin >> answer;
                                             if (YorN(Q, answer))
                                                 {
                                                     cout << "\t正确";
                                                     right++;
                                                 }
                                                cout << "\t错误";
                                             break;
                                     }
                 InsertQues(C, Q);
                 cout << endl;
             }
        cout << "共回答正确" << right << "道题。";
         cout << endl << endl;
     }

 //*****判断难度*****
 void YesOrNo(int para)
 {
         if (para)
                 cout << "是";
        else
                 cout << "否";
    }
//判断输入正确
void Reset(int i)
{
    do
    {
        cout << "请重新设置(是1/否0)：";
        cin >> para[i];                            //此处输入字符出错，但没解决
    } while (para[i] != 0 && para[i] != 1);
}
//设置题目难度
 void SetLevel()
 {
         system("cls");
         char move2;
         cout << "\t/*************设置题目难度*************/" << endl;
         cout << "\t            0.是否有乘除法("; YesOrNo(para[4]); cout << ")" << endl;
         cout << "\t            1.数值范围(" << para[5] << "~" << para[6] << ")" << endl;
         cout << "\t            2.是否有负数("; YesOrNo(para[7]); cout << ")" << endl;
         cout << "\t            3.是否有余数("; YesOrNo(para[8]); cout << ")" << endl;
         cout << "\t            4.返回主菜单" << endl;
         cout << "\t/**************************************/" << endl;
         cout << "请选择后续操作(0~4)：";
         cin >> move2;
         while (move2<‘0‘ || move2>‘4‘)
             {
                 cout << "错误！请正确输入操作序号(0~4)：";
                 cin >> move2;
             }
         switch (move2)
             {
                 case ‘0‘:Reset(4); break;
                 case ‘1‘:                                //此处若输入字符，则出错
             reset1 : cout << "新的数值下限：";                //但没找到解决方法
                         cin >> para[5];
                         cout << "新的数值上限：";
                         cin >> para[6];
                         if (para[5] >= para[6])
                             {
                                 cout << "出错！请重新输入数值范围！" << endl;
                                 goto reset1;
                             }
                         break;
                     case ‘2‘:Reset(7); break;
                     case ‘3‘:Reset(8); break;
                     case ‘4‘:break;
                 }
     }
//主页面
 void MainMenu(LinkC &C, jisuan &Q)
 {
         char move, save;
         cout << "\t               0.输入出题数量" << endl;
         cout << "\t               1.设置题目难度" << endl;
         cout << "\t               2.开始出题" << endl;
         cout << "\t               3.开始答题" << endl;
         cout << "\t               4.退出系统" << endl;
         cout << "请选择后续操作(0~4)：";
         cin >> move;
         while (move<‘0‘ || move>‘4‘)
             {
                 cout << "错误！请正确输入操作序号(0~4)：";
                 cin >> move;
             }
         switch (move)
             {
                 case ‘2‘:Display1(C, Q); break;
                 case ‘0‘:
            reset4 : cout << "请设置出题数量：";
                     cin >> para[1];
                     if (para[1] <= 0)
                        {
                            cout << "出错！请重新输入！" << endl;
                            goto reset4;
                        }
                    break;
                   case ‘1‘:SetLevel(); break; 
                   case ‘3‘:Display2(C, Q); break;
                   case ‘4‘:
                        cout << "是否保存出题记录(是1/否0)：";
                        cin >> save;
                        while (save != ‘1‘&&save != ‘0‘)
                            {
                            cout << "出错！请正确输入(是1/否0)：";
                            cin >> save;
                            }
                            if (save == ‘1‘)
                                    WriteQues(C);
                            cout << "感谢您的使用，再见！" << endl;
                             para[0] = 0; break;
                     }
     }

 int main(int argc, char* argv[])
 {
       srand((unsigned)time(NULL));    //srand()函数产生一个以当前时间开始的随机种子
         LinkC Cacu;
        jisuan ques;
        InitList(Cacu);
         ReadQues(Cacu);
         while (para[0])
             {
                 system("cls");
                MainMenu(Cacu, ques);
            system("pause");
        }
         return 0;
}
／／ｊｉｓｕａｎ．ｈ
#include<iostream>
#include <fstream>
using namespace std;
int para[10] = { 1, 30, 3, 0, 0, 0, 5, 0, 0, 0 };  
//*****四则算术题的数据结构*****
typedef struct
{
    int num1;
    int num2;
    int sign;
    int answer;
}jisuan;
typedef struct CNode     //结点
{
    jisuan ques;
    struct CNode * next;
}CNode, *LinkC;
//******题目初始化******
void InitList(LinkC &C)
{
    C = new CNode;
    C->next = NULL;
}
//******添加题目信息******
void InsertQues(LinkC &C, jisuan Q)
{//尾插入
    LinkC tail, temp;
    tail = C;
    while (tail&&tail->next != NULL)
        tail = tail->next;
               temp = new CNode;
                 temp->ques = Q;
                 temp->next = NULL;
                 tail->next = temp;
                 tail = temp;
                 para[9]++;
             }
//******判断题目存在******
int ExistQues(LinkC C, jisuan Q)
{
    LinkC temp;
    temp = C->next;
    while (temp)
    {
        if ((temp->ques.num1 == Q.num1) && (temp->ques.num2 == Q.num2) && (temp->ques.sign == Q.sign))
            return 1;                    //当两个数字和算符与链表中的一样，则存在
        else
            temp = temp->next;
    }
    return 0;
}
//******读取出过的问题******
void ReadQues(LinkC &C)
{
    LinkC temp;
    ifstream infile("question.txt");
    for (int i = 0; i<10; i++)                //读取参数表
        infile >> para[i];
    for (int i = 0; i<para[9]; i++)                //读取出过的题目
    {
        temp = new CNode;
        infile >> temp->ques.num1;
        infile >> temp->ques.num2;
        infile >> temp->ques.sign;
        temp->next = NULL;
    }
}
//******写入文件******
void WriteQues(LinkC C)
{
    LinkC temp;
    ofstream outfile("question.txt");
    if (!outfile)
    {
        cout << "文件存储失败！" << endl;
        exit(0);
    }
    for (int i = 0; i<10; i++)
        outfile << para[i] << " ";
    for (temp = C->next; temp; temp = temp->next)
    {
        outfile << temp->ques.num1 << " ";
        outfile << temp->ques.num2 << " ";
        outfile << temp->ques.sign << " ";
    }
}