Java教程
湖南大学结队编程项目队友代码互评
本文主要是介绍湖南大学结队编程项目队友代码互评，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！
一.简介
本篇博客为对结对编程搭档李津松的个人项目（中小学数学卷子自动生成程序）的评价。该代码使用语言为c++。本次点评仅为个人观点，如有错误，请多指正！
二.代码评析
/*
copyright jinsong li 2021/9/26
*/
#include <direct.h>
#include <time.h>
#include <string.h>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <iostream>
#include <fstream>
#include <vector>
using std::cin;
using std::cout;
using std::endl;
using std::string;
using std::to_string;
using std::vector;
using std::ifstream;
using std::ofstream;
void getFiles(string path, vector<string> &files) {
// 文件句
int16_t hFile = 0;
// 文件信息
struct _finddata_t fileinfo;
string pathName;
if ((hFile = _findfirst(pathName.assign(path).c_str(), &fileinfo)) != -1) {
do {
if (strcmp(fileinfo.name, ".") != 0 && strcmp(fileinfo.name, "..") != 0)
files.push_back(pathName.assign(path).
append("/").append(fileinfo.name));
} while (_findnext(hFile, &fileinfo) == 0);
_findclose(hFile);
}
}
// 查重函数：将先前的文档进行遍历，
// 然后在提取出每一行的字符串,
// 比较每一行的字符串，
// 若没有重复则返回1，重复了就返回-1
int find(string test, int ty) {
string FindType = "";
switch (ty) {
case 1: {
FindType = "./张三1/";
break;
}
case 2: {
FindType = "./张三2/";
break;
}
case 3: {
FindType = "./张三3/";
break;
}
case 4: {
FindType = "./李四1/";
break;
}
case 5: {
FindType = "./李四2/";
break;
}
case 6: {
FindType = "./李四3/";
break;
}
case 7: {
FindType = "./王五1/";
break;
}
case 8: {
FindType = "./王五2/";
break;
}
case 9: {
FindType = "./王五3/";
break;
}
}
vector<string> files;
getFiles(FindType, files);
int size = files.size();
for (int i = 0; i < size; i++) {
ifstream fin(files[i]);
string past;
while (fin >> past) {
if (past == test)
return (-1);
}
}
return 1;
}
// 试卷生成函数：通过随机数生成不同操作数，
// 根据引用的不同类型的试卷,
// 生成不同的试卷并保存在相应的位置。
void get(int NUM, int USER, int TYPE) {
time_t t = time(NULL);
ofstream File;
char ttime[33];
// 确定用户
switch (USER) {
case 1: {
strftime(ttime, 33, "./张三1/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 2: {
strftime(ttime, 33, "./张三2/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 3: {
strftime(ttime, 33, "./张三3/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 4: {
strftime(ttime, 33, "./李四1/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 5: {
strftime(ttime, 33, "./李四2/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 6: {
strftime(ttime, 33, "./李四3/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 7: {
strftime(ttime, 33, "./王五1/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 8: {
strftime(ttime, 33, "./王五2/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 9: {
strftime(ttime, 33, "./王五3/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
}
File.open(ttime);
int randNum = 0;
int diff = 0;
// 确定类型
switch (TYPE) {
case 1: {
diff = 0;
break;
}
case 2: {
diff = 2;
break;
}
case 3: {
diff = 5;
break;
}
}
int syn = 0, spin = 0;
// 生成题目
for (int i = 1; i <= NUM; i++) {
File << i << ". " << endl;
if (diff == 0) {
randNum = rand() % 4 + 2;
} else {
randNum = rand() % 5 + 1;
}
int Number[randNum] = {0, 0, 0, 0, 0};
string sNumber[randNum] = {"", "", "", "", ""};
for (int j = 0; j < randNum; j++) {
Number[j] = rand() % 100 + 1;
sNumber[j] = to_string(Number[j]);
}
string FileWrite = "";
if (diff == 0) {
spin = 0;
} else if (diff == 2) {
spin = rand() % 2 + 1;
} else if (diff == 5) {
spin = rand() % 3 + 3;
}
string spis = "";
switch (spin) {
case 0: {
FileWrite = FileWrite + sNumber[0];
break;
}
case 1: {
spis = spis + "^2";
FileWrite = FileWrite + sNumber[0];
FileWrite = FileWrite + spis;
break;
}
case 2: {
spis = spis + "√";
FileWrite = FileWrite + spis;
FileWrite = FileWrite + sNumber[0];
break;
}
case 3: {
spis = spis + "sin";
FileWrite = FileWrite + spis;
FileWrite = FileWrite + sNumber[0];
break;
}
case 4: {
spis = spis + "cos";
FileWrite = FileWrite + spis;
FileWrite = FileWrite + sNumber[0];
break;
}
case 5: {
spis = spis + "tan";
FileWrite = FileWrite + spis;
FileWrite = FileWrite + sNumber[0];
break;
}
}
if (randNum != 1) {
int flag = 0;
int dir = 0;
for (int j = 1; j < randNum; j++) {
syn = rand() % 4;
string symbol = "";
switch (syn) {
case 0: {
symbol = symbol + '+';
break;
}
case 1: {
symbol = symbol + '-';
break;
}
case 2: {
symbol = symbol + '*';
break;
}
case 3: {
symbol = symbol + '/';
break;
}
}
FileWrite = FileWrite + symbol;
if ((rand() % 3 == 1) &&
(flag == 0) &&
(j != randNum - 1)) {
FileWrite = FileWrite + "(";
flag = 1;
dir = j;
}
FileWrite = FileWrite + sNumber[j];
if ((dir != j) &&
(flag == 1) &&
(rand() % 3 == 2)) {
FileWrite = FileWrite + ")";
flag = 2;
}
}
if (flag == 1) {
FileWrite = FileWrite + ")";
flag = 2;
}
}
if (find(FileWrite, USER) == 1) {
File << FileWrite;
File << endl << endl;
} else {
i = i - 1;
}
}
File.close();
}
int user = 0;
int type = 0;
// 主函数
int main() {
cout << "试卷生成系统" << endl;
cout << "请输入用户名和密码" << endl;
while (1) {
// user等于0时表示登录初始界面，不同的user的值表示不同的账户
if (user == 0) {
char username[20] = "";
char password[20] = "";
cin >> username >> password;
if ((strcmp(username, "张三1") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为小学出题" << endl;
user = 1;
type = 1;
} else if ((strcmp(username, "张三2") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为小学出题" << endl;
user = 2;
type = 1;
} else if ((strcmp(username, "张三3") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为小学出题" << endl;
user = 3;
type = 1;
} else if ((strcmp(username, "李四1") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为初中出题" << endl;
user = 4;
type = 2;
} else if ((strcmp(username, "李四2") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为初中出题" << endl;
user = 5;
type = 2;
} else if ((strcmp(username, "李四3") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为初中出题" << endl;
user = 6;
type = 2;
} else if ((strcmp(username, "王五1") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为高中出题" << endl;
user = 7;
type = 3;
} else if ((strcmp(username, "王五2") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为高中出题" << endl;
user = 8;
type = 3;
} else if ((strcmp(username, "王五3") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为高中出题" << endl;
user = 9;
type = 3;
} else {
cout << "请输入正确的用户名、密码:" << endl;
}
}
// user大于等于1时进入生成试卷系统
if (user >= 1) {
char choosetype[20] = "";
cout << "是否更换当前出题类型" << endl;
cin >> choosetype;
// 切换出题类型
if (strcmp(choosetype, "切换为小学") == 0) {
type = 1;
} else if (strcmp(choosetype, "切换为初中") == 0) {
type = 2;
} else if (strcmp(choosetype, "切换为高中") == 0) {
type = 3;
} else {
cout << "请输入小学、初中和高中三个选项中的一个" << endl;
continue;
}
switch (type) {
case 1: {
cout << "准备生成小学数学题目，请输入生成题目数量";
cout << "（输入-1将退出当前用户，重新登录）：" << endl;
break;
}
case 2: {
cout << "准备生成初中数学题目，请输入生成题目数量";
cout << "（输入-1将退出当前用户，重新登录）：" << endl;
break;
}
case 3: {
cout << "准备生成高中数学题目，请输入生成题目数量";
cout << "（输入-1将退出当前用户，重新登录）：" << endl;
break;
}
}
int number = 0;
cin >> number;
// 选择出题数量
if (number == -1) {
user = 0;
} else if ((number <= 30) &&
(number >= 10)) {
// 调用生成试卷函数：将试题数量、用户、类型传入
get(number, user, type);
cout << "卷子生成成功！已退出" << endl;
cout << "试卷生成系统" << endl;
cout << "请输入用户名和密码" << endl;
user = 0;
}
}
}
}
View Code
本次代码使用将近400行代码来实现出卷功能。我将以登录，切换出卷模式，出卷，查重这四个功能进行讲述。
（1）登录功能
使用while循环用if来判断用户及密码是否正确，并设定了用户类型跟出卷类型为user跟type。
cout << "试卷生成系统" << endl;
cout << "请输入用户名和密码" << endl;
while (1) {
// user等于0时表示登录初始界面，不同的user的值表示不同的账户
if (user == 0) {
char username[20] = "";
char password[20] = "";
cin >> username >> password;
if ((strcmp(username, "张三1") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为小学出题" << endl;
user = 1;
type = 1;
} else if ((strcmp(username, "张三2") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为小学出题" << endl;
user = 2;
type = 1;
} else if ((strcmp(username, "张三3") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为小学出题" << endl;
user = 3;
type = 1;
} else if ((strcmp(username, "李四1") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为初中出题" << endl;
user = 4;
type = 2;
} else if ((strcmp(username, "李四2") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为初中出题" << endl;
user = 5;
type = 2;
} else if ((strcmp(username, "李四3") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为初中出题" << endl;
user = 6;
type = 2;
} else if ((strcmp(username, "王五1") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为高中出题" << endl;
user = 7;
type = 3;
} else if ((strcmp(username, "王五2") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为高中出题" << endl;
user = 8;
type = 3;
} else if ((strcmp(username, "王五3") == 0) &&
(strcmp(password, "123") == 0)) {
cout << "登录成功" << endl;
cout << "当前选择为高中出题" << endl;
user = 9;
type = 3;
} else {
cout << "请输入正确的用户名、密码:" << endl;
}
}
登录代码
（2）切换出卷类型
在每次出卷前都要输入出卷的类型如”切换为小学“才能进入出卷，并输出当时为什么类型的出卷。
if (user >= 1) {
char choosetype[20] = "";
cout << "是否更换当前出题类型" << endl;
cin >> choosetype;
// 切换出题类型
if (strcmp(choosetype, "切换为小学") == 0) {
type = 1;
} else if (strcmp(choosetype, "切换为初中") == 0) {
type = 2;
} else if (strcmp(choosetype, "切换为高中") == 0) {
type = 3;
} else {
cout << "请输入小学、初中和高中三个选项中的一个" << endl;
continue;
}
switch (type) {
case 1: {
cout << "准备生成小学数学题目，请输入生成题目数量";
cout << "（输入-1将退出当前用户，重新登录）：" << endl;
break;
}
case 2: {
cout << "准备生成初中数学题目，请输入生成题目数量";
cout << "（输入-1将退出当前用户，重新登录）：" << endl;
break;
}
case 3: {
cout << "准备生成高中数学题目，请输入生成题目数量";
cout << "（输入-1将退出当前用户，重新登录）：" << endl;
break;
}
}
切换出卷类型代码
（3）出卷
使用get(int NUM, int USER, int TYPE)来进行出卷，传入参数出卷题目数量，出卷人，出卷的类型。
并把出的试卷生成并保存在该用户的目录下，以出卷时间为命名的txt文件。根据小学加减乘除括号，初中有根号或者平方，高中有三角函数来进行分类编写，用rand产生随机数来确定使用什么操作数，操作符，操作数大小，并用string进行拼接，虽然满足了加减乘除，但是在特殊符号的处理上只放在第一位来对算术进行特殊化，如sin50+6*5=。
void get(int NUM, int USER, int TYPE) {
time_t t = time(NULL);
ofstream File;
char ttime[33];
// 确定用户
switch (USER) {
case 1: {
strftime(ttime, 33, "./张三1/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 2: {
strftime(ttime, 33, "./张三2/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 3: {
strftime(ttime, 33, "./张三3/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 4: {
strftime(ttime, 33, "./李四1/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 5: {
strftime(ttime, 33, "./李四2/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 6: {
strftime(ttime, 33, "./李四3/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 7: {
strftime(ttime, 33, "./王五1/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 8: {
strftime(ttime, 33, "./王五2/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
case 9: {
strftime(ttime, 33, "./王五3/%Y-%m-%d-%H-%M-%S.txt", localtime(&t));
break;
}
}
File.open(ttime);
int randNum = 0;
int diff = 0;
// 确定类型
switch (TYPE) {
case 1: {
diff = 0;
break;
}
case 2: {
diff = 2;
break;
}
case 3: {
diff = 5;
break;
}
}
int syn = 0, spin = 0;
// 生成题目
for (int i = 1; i <= NUM; i++) {
File << i << ". " << endl;
if (diff == 0) {
randNum = rand() % 4 + 2;
} else {
randNum = rand() % 5 + 1;
}
int Number[randNum] = {0, 0, 0, 0, 0};
string sNumber[randNum] = {"", "", "", "", ""};
for (int j = 0; j < randNum; j++) {
Number[j] = rand() % 100 + 1;
sNumber[j] = to_string(Number[j]);
}
string FileWrite = "";
if (diff == 0) {
spin = 0;
} else if (diff == 2) {
spin = rand() % 2 + 1;
} else if (diff == 5) {
spin = rand() % 3 + 3;
}
string spis = "";
switch (spin) {
case 0: {
FileWrite = FileWrite + sNumber[0];
break;
}
case 1: {
spis = spis + "^2";
FileWrite = FileWrite + sNumber[0];
FileWrite = FileWrite + spis;
break;
}
case 2: {
spis = spis + "√";
FileWrite = FileWrite + spis;
FileWrite = FileWrite + sNumber[0];
break;
}
case 3: {
spis = spis + "sin";
FileWrite = FileWrite + spis;
FileWrite = FileWrite + sNumber[0];
break;
}
case 4: {
spis = spis + "cos";
FileWrite = FileWrite + spis;
FileWrite = FileWrite + sNumber[0];
break;
}
case 5: {
spis = spis + "tan";
FileWrite = FileWrite + spis;
FileWrite = FileWrite + sNumber[0];
break;
}
}
if (randNum != 1) {
int flag = 0;
int dir = 0;
for (int j = 1; j < randNum; j++) {
syn = rand() % 4;
string symbol = "";
switch (syn) {
case 0: {
symbol = symbol + '+';
break;
}
case 1: {
symbol = symbol + '-';
break;
}
case 2: {
symbol = symbol + '*';
break;
}
case 3: {
symbol = symbol + '/';
break;
}
}
FileWrite = FileWrite + symbol;
if ((rand() % 3 == 1) &&
(flag == 0) &&
(j != randNum - 1)) {
FileWrite = FileWrite + "(";
flag = 1;
dir = j;
}
FileWrite = FileWrite + sNumber[j];
if ((dir != j) &&
(flag == 1) &&
(rand() % 3 == 2)) {
FileWrite = FileWrite + ")";
flag = 2;
}
}
if (flag == 1) {
FileWrite = FileWrite + ")";
flag = 2;
}
}
if (find(FileWrite, USER) == 1) {
File << FileWrite;
File << endl << endl;
} else {
i = i - 1;
}
}
File.close();
}
View Code
（4）查重
首先是传入该用户的信息，以此来进入该用户目录下的文件，在遍历目录下所有文件，进入文件中的txt，提取每一行成string，并于出的题作比较，如果相同返回-1，如果不同返回1.
void getFiles(string path, vector<string> &files) {
// 文件句
int16_t hFile = 0;
// 文件信息
struct _finddata_t fileinfo;
string pathName;
if ((hFile = _findfirst(pathName.assign(path).c_str(), &fileinfo)) != -1) {
do {
if (strcmp(fileinfo.name, ".") != 0 && strcmp(fileinfo.name, "..") != 0)
files.push_back(pathName.assign(path).
append("/").append(fileinfo.name));
} while (_findnext(hFile, &fileinfo) == 0);
_findclose(hFile);
}
}
// 查重函数：将先前的文档进行遍历，
// 然后在提取出每一行的字符串,
// 比较每一行的字符串，
// 若没有重复则返回1，重复了就返回-1
int find(string test, int ty) {
string FindType = "";
switch (ty) {
case 1: {
FindType = "./张三1/";
break;
}
case 2: {
FindType = "./张三2/";
break;
}
case 3: {
FindType = "./张三3/";
break;
}
case 4: {
FindType = "./李四1/";
break;
}
case 5: {
FindType = "./李四2/";
break;
}
case 6: {
FindType = "./李四3/";
break;
}
case 7: {
FindType = "./王五1/";
break;
}
case 8: {
FindType = "./王五2/";
break;
}
case 9: {
FindType = "./王五3/";
break;
}
}
vector<string> files;
getFiles(FindType, files);
int size = files.size();
for (int i = 0; i < size; i++) {
ifstream fin(files[i]);
string past;
while (fin >> past) {
if (past == test)
return (-1);
}
}
return 1;
}
查重
三总结
优点：
本次编程基本实现了功能，在每个用户下正确出小学，初中，高中试卷，出卷题目满足要求。代码使用get函数进行出题，getFile和find函数进行查重，查重通过才写入txt。
缺点：
注释太少，操作数，操作符的注释没有，让人刚开始理解起来不是那么流畅。功能实现有不合理性，因为只在第一位数字才进行特殊化处理，题目就没有那么合理性。
评价：
我的也是使用的是C++，大体是一样的，但是在出题的时候，他是三份类型试卷一起写，理解起来较为困难。对比起来，总会发现自己与他人的差别，在之后也会学习别人的优点，运用更好的方法。
这篇关于湖南大学结队编程项目队友代码互评的文章就介绍到这儿，希望我们推荐的文章对大家有所帮助，也希望大家多多支持为之网！
您可能喜欢
-
Springboot应用的多环境打包入门11-23
-
Springboot应用的生产发布入门教程11-23
-
Python编程入门指南11-23
-
Java创业入门：从零开始的编程之旅11-23
-
Java创业入门：新手必读的Java编程与创业指南11-23
-
Java对接阿里云智能语音服务入门详解11-23
-
Java对接阿里云智能语音服务入门教程11-23
-
JAVA对接阿里云智能语音服务入门教程11-23
-
Java副业入门：初学者的简单教程11-23
-
JAVA副业入门：初学者的实战指南11-23
-
JAVA项目部署入门：新手必读指南11-23
-
Java项目部署入门：新手必看指南11-23
-
Java项目部署入门：新手必读指南11-23
-
Java项目开发入门：新手必读指南11-23
-
JAVA项目开发入门：从零开始的实用教程11-23
栏目导航
