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huyunan 44742c5d1b C8
2 years ago

28
.vscode/tasks.json vendored

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{
"tasks": [
{
"type": "cppbuild",
"label": "C/C++: gcc.exe 生成活动文件",
"command": "D:\\mingw64\\bin\\gcc.exe",
"args": [
"-fdiagnostics-color=always",
"-g",
"${file}",
"-o",
"${fileDirname}\\${fileBasenameNoExtension}.exe"
],
"options": {
"cwd": "${fileDirname}"
},
"problemMatcher": [
"$gcc"
],
"group": {
"kind": "build",
"isDefault": true
},
"detail": "调试器生成的任务。"
}
],
"version": "2.0.0"
}

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本系统是程序设计与问题求解课程设计项目,是为教师提供管理班级成绩的工具,该系统可以实现的对学生的成绩进行增、删、改、查、信息保存和信息导入等基本功能,以及对学生成绩排序和分段的扩展功能,有利于对学生成绩管理。项目采用 C 语言编程实现,在 VS Code 集成开发环境IDE中用 GCC 进行编译。系统采用模块化设计,程序结构清晰,采用菜单驱动的命令行界面,操作便捷,能够用 CSV 格式读取和保存数据,通用性强,能够用图表展示数据,直观清楚。
下载地址https://code.educoder.net/plebkff6w/text3
下载地址https://code.educoder.net/plebkff6w/text3/tree
项目开发过程中采用 Kanban看板进行任务管理和分工协作并使用 Git 对程序代码和文档进行版
本管理。任务分工情况如下:
@ -16,25 +16,26 @@
| 任务 | 设计 | 开发 | 测试 | 文档 |
|---|---|---|---|---|
| C1-C3 菜单驱动的用户界面 | 董函铄 | 董函铄 | 胡煜男 | 董函铄 |
| C4 添加学生信息及成绩 | 胡煜男 | 胡煜男 | 于博 | 胡煜男 |
| C5: 查询学生信息及成绩 | 于博 | 于博 | 袁楷昊 | 于博 |
| C6: 打印学生信息及成绩 | 袁楷昊 | 袁楷昊 | 董函铄 | 袁楷昊 |
| C7: 修改学生信息及成绩 | 董函铄 | 董函铄 | 于博 | 董函铄 |
| C8: 删除学生信息及成绩 | 胡煜男 | 胡煜男 | 袁楷昊 | 胡煜男|
| C9: 学生信息及成绩记录排序 | 于博 | 于博 | 董函铄 | 于博 |
| C10: 从文件中读取学生信息及成绩记录 | 袁楷昊 | 袁楷昊 | 胡煜男 | 袁楷昊 |
| C11: 将学生信息及成绩保存保存到文件 | 董函铄 | 于博 | 胡煜男 | 董函铄 |
| C12: 以图表方式显示学生信息及成绩 | 董函铄 | 袁楷昊 | 于博 | 胡煜男 |
| C4 添加库存记录 | 胡煜男 | 胡煜男 | 于博 | 胡煜男 |
| C5: 查询库存记录 | 于博 | 于博 | 袁楷昊 | 于博 |
| C6: 打印库存列表 | 袁楷昊 | 袁楷昊 | 董函铄 | 袁楷昊 |
| C7: 修改库存记录 | 董函铄 | 董函铄 | 于博 | 董函铄 |
| C8: 删除库存记录 | 胡煜男 | 胡煜男 | 袁楷昊 | 胡煜男|
| C9: 库存记录排序 | 于博 | 于博 | 董函铄 | 于博 |
| C10: 从文件中读取库存记录 | 袁楷昊 | 袁楷昊 | 胡煜男 | 袁楷昊 |
| C11: 将库存保存保存到文件 | 董函铄 | 于博 | 胡煜男 | 董函铄 |
| C12: 以图表方式显示库存记录 | 董函铄 | 袁楷昊 | 于博 | 胡煜男 |
每个成员的工作量(百分比):
| 董函铄 | 胡煜男 | 于博 | 袁楷昊 |
|---|---|---|---|
| 30 | 20 | 30 | 20 |
| 25 | 25 | 25 | 25 |
## 关于实现学生成绩管理系统
设计一个学生成绩管理系统,要求采用命令行菜单界面进行交互,具备读取、保存、打印、查询、修改、插入、删除和排序等基本功能,能够以表格和图表形式展示数据,采用 CSV 格式保存数据。
设计一个学生成绩管理系统,要求采用命令行菜单界面进行交互,具备读取、保存、打印、查询、修
改、插入、删除和排序等基本功能,能够以表格和图表形式展示数据,采用 CSV 格式保存数据。
系统的功能性需求:
@ -47,123 +48,7 @@
## 需求分析
分析系统的功能需求和界面需求,编制用户手册如下。
#### C1:启动程序
命令行中执行命令 ./app , 系统启动,显示提示信息,然后显示功能菜单,等待用户输入命令。
```
学生成绩管理系统启动
1 读取 | 2 保存 | 3 打印 | 4 查询 | 5 添加
6 修改 | 7 删除 | 8 排序 | 9 图表 | 0 退出
请选择:
```
#### C2显示命令菜单
```
1 读取 | 2 保存 | 3 打印 | 4 查询 | 5 添加
6 修改 | 7 删除 | 8 排序 | 9 图表 | 0 退出
请选择:
```
#### C3: 退出程序
选择菜单命令 `0`,再输入 `y` 确认,则退出程序。
```
请选择0
确定要退出吗?(Y/N): y
程序退出
```
#### C4: 添加学生信息及成绩
选择菜单命令 `3`,提示输入学号,若该学生不存在,则继续输入学号、姓名、成绩,添加学号,并提示完成;若学号已存在,则提示学号已存在,并结束。
```
请选择3
输入学号102
输入姓名:小米
输入成绩70
学生 102 已添加
1 读取 | 2 保存 | 3 打印 | 4 查询 | 5 添加
6 修改 | 7 删除 | 8 排序 | 9 图表 | 0 退出
请选择3
输入学号102
学号已存在.
```
#### C5: 查询学生信息及成绩
选择菜单命令 `4`,提示输入学号,若该学号存在,则输出学号、姓名、成绩;否则提示学生不存在并结束。
```
请选择4
输入学号101
学号101
名字:小米
成绩80
1 读取 | 2 保存 | 3 打印 | 4 查询 | 5 添加
6 修改 | 7 删除 | 8 排序 | 9 图表 | 0 退出
请选择4
输入学号101
学号不存在.
```
#### C6: 打印学生信息及成绩
选择菜单命令 `3`,打印
```
请选择3
-------------------------------------------------------
| NUMBER | NAME | ON HAND |
-------------------------------------------------------
| 101 | 小李 | 80 |
-------------------------------------------------------
```
#### C7: 修改学生信息及成绩
选择菜单命令 `7`,根据提示输入学号,若学号存在,则继续输入学号、姓名、成绩,并修改库存记录;否则,提示学号不存在并结束。
```
请选择7
输入学号104
输入姓名:小刘
输入成绩96
学生 104 已更新
1 读取 | 2 保存 | 3 打印 | 4 查询 | 5 添加
6 修改 | 7 删除 | 8 排序 | 9 图表 | 0 退出
请选择3
-------------------------------------------------------
| NUMBER | NAME | ON HAND |
-------------------------------------------------------
| 104 | 小刘 | 96 |
-------------------------------------------------------
1 读取 | 2 保存 | 3 打印 | 4 查询 | 5 添加
6 修改 | 7 删除 | 8 排序 | 9 图表 | 0 退出
请选择7
输入学号104
学生不存在.
```
#### C8: 删除学生信息及成绩
#### C8: 删除库存记录
选择菜单命令 `7`,根据提示输入学号,若学号存在,则删除之;否则提示学号不存在并结束。
@ -189,229 +74,3 @@
-------------------------------------------------------
```
#### C9: 学生信息及成绩排序
选择菜单命令 `8`,对学生按学号从小到大排序。
```
请选择3
-------------------------------------------------------
| NUMBER | NAME | ON HAND |
-------------------------------------------------------
| 101 | 小米 | 80 |
| 100 | 小明 | 70 |
-------------------------------------------------------
1 读取 | 2 保存 | 3 打印 | 4 查询 | 5 添加
6 修改 | 7 删除 | 8 排序 | 9 图表 | 0 退出
请选择8
排序
排序已完成
1 读取 | 2 保存 | 3 打印 | 4 查询 | 5 添加
6 修改 | 7 删除 | 8 排序 | 9 图表 | 0 退出
请选择3
-------------------------------------------------------
| NUMBER | NAME | ON HAND |
-------------------------------------------------------
| 100 | 小明 | 70 |
| 101 | 小米 | 80 |
-------------------------------------------------------
```
#### C10: 从文件中读取学生信息及成绩
选择菜单命令 `1`,提示输入文件名,若文件存在,则打开文件读取 CSV 格式保存的所有库存记录;否则,若文件不存在,则给出错误信息并结束。
假设文件 `a.csv` 中,以 CSV Comma-Separated Values格式保存了如下记录
```
103,小红,80
104,小光,100
101,小米,80
102,小明,70
```
则读取记录的过程如下:
```
请选择1
读取数据
请输入文件名a.csv
读取 4 记录
1 读取 | 2 保存 | 3 打印 | 4 查询 | 5 添加
6 修改 | 7 删除 | 8 排序 | 9 图表 | 0 退出
请选择3
-------------------------------------------------------
| NUMBER | NAME | ON HAND |
-------------------------------------------------------
| 103 | 小红 | 80 |
| 104 | 小光 | 100 |
| 101 | 小米 | 80 |
| 102 | 小明 | 70 |
-------------------------------------------------------
1 读取 | 2 保存 | 3 打印 | 4 查询 | 5 添加
6 修改 | 7 删除 | 8 排序 | 9 图表 | 0 退出
请选择1
读取数据
请输入文件名a
a: No such file or directory
```
#### C11: 将学生信息及成绩保存到文件
选择菜单命令 `2`,提示输入文件名,将所有库存记录以 CSV 格式保存到指定的文件中。
```
请选择2
保存数据
请输入文件名b.csv
保存 4 记录
```
#### C12: 以图表方式显示学生信息及成绩
选择菜单命令 `9`,以图表方式显示库存记录。
```
请选择9
图表
103 : 小红 | ******** (80)
104 : 小光 | ************ (100)
101 : 小米 | ******************** (80)
102 : 小明 | ********** (70)
1 读取 | 2 保存 | 3 打印 | 4 查询 | 5 添加
6 修改 | 7 删除 | 8 排序 | 9 图表 | 0 退出
```
## 概要设计
系统主要分为用户界面和数据处理两大模块。
用户界面模块包括系统初始化init显示菜单display_menu选择菜单命令make_choice、确认confirm、退出quit等子模块。
数据处理模块包括读取数据read_data、保存数据save_data、打印数据print_data、查询数据query_data、添加数据add_data、更新数据update_data、删除数据delete_data、数据排序sort_data和生成图表make_chart等子模块。其中查询、添加、更新和删除数据还会用到根据编号查询数据的方法find
上述各模块通过主程序main进行调用系统模块图如下。
![1](./1.png)
各模块的主要功能如下:
#### main
系统主函数模块,显示菜单,根据用户选择的菜单命令,执行相关操作。
#### init
系统初始化。
#### display_menu
显示菜单命令。
## 详细设计
针对概要设计
#### main
Step 1: 初始化
Step 2: 根据用户选择的命令执行对应的操作
Step 2.1: 显示菜单
Step 2.2: 选择菜单命令 c
Step 2.3: if c == CMD_READ then 读取数据
Step 2.4: if c == CMD_SAVE then 保存数据
Step 2.5: if c == CMD_PRINT then 打印数据
Step 2.6: if c == CMD_QUERY then 查询数据
Step 2.7: if c == CMD_ADD then 添加数据
Step 2.8: if c == CMD_UPDATE then 修改数据
Step 2.9: if c == CMD_DELETE then 删除数据
Step 2.10: if c == CMD_SORT then 排序数据
Step 2.11: if c == CMD_MAKE then 显示图表
Step 2.12: if c == CMD_QUIT then 退出
![cc9d4a3c669029521483c666695b97e](./cc9d4a3c669029521483c666695b97e.png)
#### read_data
Step 1: 输入文件名
Step 2: 打开文件
Step 3: if 文件为空 then 结束
Step 4: else 读取文件
Step 5: 提示读取并记录
![mmm](./mmm.png)
#### save_data
Step 1: 输入文件名
Step 2: 打开文件
Step 3: if 打开文件失败 then 提示打开文件失败并结束
Step 4: 将所有库存记录写入文件
Step 5: 关闭文件
![save](./save.png)
#### print_data
Step 1: 输出学号、姓名、成绩
![print](./print.png)
#### query_data
Step 1: 输入学生学号
Step 2: if学号不存在 then 提示学生不存在并结束
Step 3: else 学号存在 then 输出学号、姓名、成绩
![query](./query.png)
#### add_data
Step 1: if 数据库满 then 提示数据库满并结束
Step 2: 输入学号
Step 3: if 学生已存在 then 提示学生已存在并结束
Step 4: 输入学生名字和成绩
Step 5: 添加学生到数据
Step 6: 提示添加成功
![add](./add.png)
#### update_data
Step 1: 输入学号
Step 2: if 不存在 then 提示学生不存在并结束
Step 3: else 输入学号、姓名、成绩
Step 4: 已更新
![update](./updata.png)
#### delete_data
Step 1: 输入学号
Step 2: if 不存在 then 提示学生不存在并结束
Step 3: else 删除学生信息
Step 4: 提示删除成功
![delete](./delete.png)
#### sort_data
Step 1: 读取文件
Step 2: 进行排序
Step 3: 提示排序已完成
![2](./2.png)
#### make_chart
Step 1: 读取文件
Step 2: 显示图表
![3](./3.png)
#### confirm
Step 1: 输出 确定要退出吗
Step 2: if 确认 then 退出
![14](./14.png)

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354
text.c

@ -1,354 +0,0 @@
#define NAME_LEN 31
#define MAX_PARTS 100
//保存学生成绩信息的结构
struct students
{
int number;
char name[NAME_LEN + 1];
int score;
};
static struct students stu[MAX_PARTS];
static int num_parts = 0;
#include <stdio.h>
#include <stdlib.h>
//定义常量
#define CMD_QUIT 0
#define CMD_QUERY 4
#define CMD_INSERT 5
#define CMD_UPDATE 6
#define CMD_DELETE 7
#define CMD_READ 1
#define CMD_SAVE 2
#define CMD_PRINT 3
#define CMD_SORT 8
#define CMD_CHART 9
// 菜单命令的编号
// 函数声明
void init(void);
void quit(void);
void display_menu(void);
int make_choice(void);
void read_data(void); // 读取
void save_data(void); // 保存
void print_data(void); // 打印
void query_data(void); // 查询
void add_data(void); // 添加
void update_data(void); // 修改
void delete_data(void); // 删除
void sort_data(void); // 排序
void make_chart(void); // 图表
int confirm(const char *msg);
// 主程序
int main(void)
{
init(); // 程序启动
while (1)
{
display_menu();
int c = make_choice();
switch (c)
{
case CMD_QUERY:
query_data();
break;
case CMD_INSERT:
add_data();
break;
case CMD_UPDATE:
update_data();
break;
case CMD_DELETE:
delete_data();
break;
case CMD_READ:
read_data();
break;
case CMD_SAVE:
save_data();
break;
case CMD_PRINT:
print_data();
break;
case CMD_SORT:
sort_data();
break;
case CMD_CHART:
make_chart();
break;
default:
puts("命令错误,请重新选择");
break;
case CMD_QUIT:
if (confirm("确定要退出吗?"))
quit(); // 仅在确认后退出
break;
}
}
return 0;
}
// 函数定义
void init(void)
{
puts("程序启动");
}
void quit(void)
{
puts("程序退出");
exit(EXIT_SUCCESS);
}
void display_menu(void)
{
printf("\n%d 读取 | %d 保存 | %d 打印 | %d 查询 | %d 添加\n%d 修改 | %d 删除 | %d 排序 | %d 图表 | %d 退出\n\n", CMD_READ, CMD_SAVE, CMD_PRINT, CMD_QUERY, CMD_INSERT, CMD_UPDATE, CMD_DELETE, CMD_SORT, CMD_CHART, CMD_QUIT);
}
int make_choice(void)
{
int c; // 用户输入
int n = 0; // 正确读入的数据项个数
while (n == 0)
{
printf("请选择:");
n = scanf("%d", &c); // 尝试读入整数 c
scanf("%*[^\n]"); // 跳过一行中剩余的字符
}
return c;
}
//查询
void query_data(void)
{
int num;
printf("输入学生学号: ");
scanf("%d", &num);
int f = -1;
for (int i = 0; i < num_parts; i++)
{
if (num == stu[i].number)
{
f = i;
break;
}
}
if (f == -1)
{
printf("学生不存在");
}
else
{
printf("学生学号:%d\n", stu[f].number);
printf("学生姓名:%s\n", stu[f].name);
printf("学生成绩:%d\n", stu[f].score);
}
}
//打印
void print_data(void)
{
printf("NUMBER | NAME score\n");
for (int i = 0; i < num_parts; i++)
{
printf("%d | %s %d\n", stu[i].number, stu[i].name, stu[i].score);
}
}
//添加
void add_data(void)
{
int num;
printf("输入学生学号:");
scanf("%d", &num);
int f = 0;
for (int i = 0; i < num_parts; i++)
{
if (num == stu[i].number)
{
f = 1;
break;
}
}
if (f == 0)
{
stu[num_parts].number = num;
printf("输入学生姓名:");
scanf("%s", &stu[num_parts].name);
printf("输入学生成绩:");
scanf("%d", &stu[num_parts].score);
num_parts++;
printf("学生 %d 添加成功\n", num);
}
else
{
printf("学生已存在");
}
}
//修改
void update_data(void)
{
int num;
printf("输入学生学号:");
scanf("%d", &num);
int f = 0;
for (int i = 0; i < num_parts; i++)
{
if (num == stu[i].number)
{
f = 1;
break;
}
}
if (f == 0)
{
printf("学生不存在");
}
else
{
printf("输入学生学号:");
scanf("%d", &stu[num].number);
printf("输入学生姓名:");
scanf("%s", stu[num].name);
printf("输入学生成绩:");
scanf("%d", &stu[num].score);
printf("学生 %d 已更新", num);
}
}
//删除
void delete_data(void)
{
int num;
printf("输入学生学号:");
scanf("%d", &num);
int f = 0, i, j;
for (i = 0; i < num_parts; i++)
{
if (num == stu[i].number)
{
f = 1;
break;
}
}
if (f == 0)
{
printf("学生不存在");
}
else
{
for (j = i; j < num_parts - 1; j++)
{
stu[j] = stu[j + 1];
}
num_parts--;
printf("删除成功");
}
}
void read_data(void)
{
puts("读取数据");
printf("请输入文件名");
char filename[256];
scanf("%s", filename);
FILE *fp = fopen(filename, "r");
if (fp == NULL)
{
perror(filename);
return;
}
int i = 0;
while (fscanf(fp, "%d,%[^,],%d", &stu[i].number, stu[i].name, &stu[i].score) == 3)
{
i++;
}
fclose(fp);
num_parts = i;
printf("读取 %d 记录\n", num_parts);
}
void save_data(void)
{
puts("保存数据");
printf(" 请输入文件名");
char filename[256];
scanf("%s", filename);
FILE *fp = fopen(filename, "r");
if (fp == NULL)
{
perror(filename);
return;
}
for (int i = 0; i < num_parts; i++)
{
fprintf(fp, "%d,%s,%d\n", stu[i].number, stu[i].name, stu[i].score);
}
fclose(fp);
printf("保存%d 成功", num_parts);
}
//排序
void sort_data(void)
{
printf("排序\n");
for (int i = 0; i < num_parts; i++)
{
int change = 0;
static struct students t;
for (int j = 0; j < num_parts - i - 1; j++)
{
if (stu[j].number > stu[j + 1].number)
{
t = stu[j + 1];
stu[j + 1] = stu[j];
stu[j] = t;
change = 1;
}
}
if (!change)
break;
}
for (int i = 0; i < num_parts; i++)
{
int change = 0;
static struct students t;
for (int j = 0; j < num_parts - i - 1; j++)
{
if (stu[j].score > stu[j + 1].score)
{
t = stu[j + 1];
stu[j + 1] = stu[j];
stu[j] = t;
change = 1;
}
}
if (!change)
break;
}
printf("排序已完成");
}
void make_chart(void)
{
printf("NUMBER | NAME score\n");
for (int i = 0; i < num_parts; i++)
{
printf("%d | %s ", stu[i].number, stu[i].name);
for (int j = 0; j < stu[i].score; j++)
{
printf("*");
}
printf("\n");
}
printf("图表\n");
}
int confirm(const char *msg)
{
char c = 'n'; // 默认选择是 no
printf("%s(Y/N): ", msg); // 提示输入 yes/no 进行确认
scanf(" %c%*[^\n]", &c); // 读取第一个字符,忽略剩余字符
return c == 'y' || c == 'Y'; // 返回确认结果
}

@ -1,36 +0,0 @@
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<mxCell id="0"/>
<mxCell id="1" parent="0"/>
<<<<<<< HEAD
<mxCell id="2" value="" style="ellipse;whiteSpace=wrap;html=1;aspect=fixed;" vertex="1" parent="1">
<mxGeometry x="250" y="180" width="80" height="80" as="geometry"/>
=======
<mxCell id="8" style="edgeStyle=none;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="3" target="5">
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>>>>>>> 456f225eb01b97142f653b827d7c303650179ba6
</mxCell>
</root>
</mxGraphModel>
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