四则运算3
Posted 琴弦0
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我和王春帆一组。
设计思路：1.先设置出题的数量
2.设置题的难度
3.再利用YorN(判断答案是否正确函数)判断对错。
#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 << " "; } }
项目计划总结：
| 日期 | 开始时间 | 中断事件 | 中断事件 | 净时间 | 活动 |
| ３／１４ | １４：００ | １５：５０ | １０分钟 | １００分钟 | 上课 |
| １６：３０ | １７：３０ | ０ | ６０分钟 | 写作业 | |
| ３／１５ | １３：００ | １４：３０ | ０ | ９０分钟 | 写作业 |
| ３／１６ | １５：００ | １６：００ | ０ | ６０分钟 | 写作业 |
| ３／１７ | １５：００ | １６：００ | ０ | ６０分钟 | 写作业 |
| ３／１８ | １４：００ | １５：００ | ０ | ６０分钟 | 写作业 |
| 日期&&任务 | 听课 | 编写程序 | 阅读相关书籍 | 网上查找资料 | 日总结 |
| 周一 | 2H | 2H | 0H | 0.5H | 4.5H |
| 周二 | 1H | 0.5H | 0.5H | 2H | |
| 周三 | 2H | 1H | 0.5H | 3.5H | |
| 周四 | 2H | 0H | 0H | 0H | 2H |
| 周五 | 3H | 1H | 1H | 5H | |
| 周六 | 4H | 2H | 2H | 8H | |
| 周日 | 0H | 0H | 0H | 0H | |
| 周总结 | 4H | 12H | 4.5H | 4.5H | 25H |
缺陷记录日志：在这次编程中，把以前的数据结构变成给忘记了，还得翻书。以后要好好复习。
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