C语言小项目——学生成绩管理系统
stduent.h
#ifndef STUDENT_H_INCLUDED
#define STUDENT_H_INCLUDED
#pragma once
#pragma warning(disable:4996)//visual studio 支持c语言必备内容
#define FILE_DATA_PATH "E:\\STUDENT.txt"//定义存放文件路径为STUDENT.txt文件
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <conio.h>
#define MAX 300//最大录入信息300人
//学生信息结构体
struct isStudent
{
char name[9]; //姓名
int number; // 默认学号8位
float chinese;
float math;
float english; //定义三科成绩；
float average; //定义平均成绩
char password[20];//定义个人密码
};
typedef struct isStudent isStudent;
static isStudent temporary[1];
isStudent stu[MAX];//学生数量结构体
int nowStudentNumber;//全局变量，代表当前学生人数
//显示欢迎信息
void welcome();
//系统界面
void memu();
//学生系统界面
void studentInterface(int studentnumber13);
//管理员学生界面
void adminInterface();
//管理员增加学生信息
void creatAccount();
//删除学生信息
void deleteAccount();
//退出系统
void exitSystem();
//排序学生
void sort();
//按总成绩排序
void sortGrade();
//显示所有存储的信息
void adminShow();
//管理员查看个人信息
void studentShow();
//写入函数
void writeIn();
//查找单个信息
//void searchPersonInformation_asNumber();
//读取文件
void readOut();
//请求输入学生密码和账号
void studentInPWD();
//管理员密码登录
void adminInPWD();
//学生端查看个人信息
void studentFindShow(int studentnumber);
//学生端修改密码
void changeTheSecurityCode(int studentNumber13);
//管理员功能界面
void adminMemu();
#endif // STUDENT_H_INCLUDED
main.c
#include <stdio.h>
#include "student.h"
int main()
{
int income;
welcome();//功能：欢迎界面
getch();
nowStudentNumber = 0;
readOut();//读取文件
while (1)
{
system("cls");
memu();
scanf("%d", &income);
getchar();
switch (income)
{
case 1:
adminInPWD();//管理员端登录密码
break;
case 2:
studentInPWD();//学生端登录密码
break;
case 3:
printf("\t\t\t--------------------------谢谢使用！输入任意键继续--------------------------\n");
getchar();
return 0;
default:
;
}
}
}
stduent.c
/////运行支持库
#include<stdio.h>
#include "Student.h"
#pragma warning(disable:4996)//visual studio 支持c语言必备内容
//欢迎界面
void welcome()
{
/*
printf("\n\n\n\n\n\n\n\n");
printf("\t\t\t\t\t*********************************\n");
printf("\t\t\t\t\t* *\n");
printf("\t\t\t\t\t* *\n");
printf("\t\t\t\t\t* 欢迎进入学生成绩管理系统 *\n");
printf("\t\t\t\t\t* *\n");
printf("\t\t\t\t\t* *\n");
printf("\t\t\t\t\t*********************************");
*/
printf("\n\n\n\n\n\n");
printf("\t\t\t\t Welcome to the Student achievement management system\n");
printf("\t\t\t\t\t ～ (((^^)(^^))) \n");
printf("\t\t\t\t\t┌────────────────────────────────────┐\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ 欢迎进入学生成绩管理系统 │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t└────────────────────────────────────┘\n");
}
//
void memu()
{
printf("\n\n\n\n\n\n");
printf("\t\t\t\t Welcome to the Student achievement management system\n");
printf("\t\t\t\t\t ～ (((^^)(^^))) \n");
printf("\t\t\t\t\t┌────────────────────────────────────┐\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ 1.管理员身份登陆! │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ 2.本科生身份登陆! │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ 3.退出系统! │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t└────────────────────────────────────┘\n");
printf("\t\t\t\t\t请输入对应的数字选择功能！");
}
void adminMemu()
{/*
printf("\t\t\t\t\t\t-------------------------1.录入学生成绩-------------------------\n");
printf("\n");
printf("\t\t\t\t\t\t-------------------------2.查找学生信息-------------------------\n");
printf("\n");
printf("\t\t\t\t\t\t-------------------------3.删除学生信息-------------------------\n");
printf("\n");
printf("\t\t\t\t\t\t-------------------------4.按照总成绩排序-----------------------\n");
printf("\n");
printf("\t\t\t\t\t\t-------------------------5.按学号排序---------------------------\n");
printf("\n");
printf("\t\t\t\t\t\t-------------------------6.统计学生总数-------------------------\n");
printf("\n");
printf("\t\t\t\t\t\t-------------------------0.退出系统-----------------------------\n");
*/
printf("\n\n\n\n\n\n");
printf("\t\t\t\t Welcome to the Student achievement management system\n");
printf("\t\t\t\t\t ～ (((^^)(^^))) \n");
printf("\t\t\t\t\t┌────────────────────┸───────────────┐\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ 1.录入学生成绩 │\n");
printf("\t\t\t\t\t│ 2.查找学生信息 │\n");
printf("\t\t\t\t\t│ 3.删除学生信息 │\n");
printf("\t\t\t\t\t│ 4.按照总成绩排序 │\n");
printf("\t\t\t\t\t│ 5.按学号排序 │\n");
printf("\t\t\t\t\t│ 6.统计学生总数 │\n");
printf("\t\t\t\t\t│ 0.退出系统 │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t└────────────────────────────────────┘\n");
printf("\t\t\t\t\t请输入对应的数字选择功能！");
}
//写入文件
void writeIn()//写入文件
{
char ch;
FILE* pFile;
pFile = fopen("STUDENT.txt", "w");//状态，覆写
if (pFile == NULL)
{
printf("\t\t\t写入文件失败。\n");
printf("\t\t\t文件保存错误。\n");
printf("\t\t\t输入任意键退出。\n");
getch();
return 0;//以不正常状态退出
}
else
{
//将所有内容写入文件
for (int i = 0; i < nowStudentNumber; i++)
{
fprintf(pFile, "%-9s %-10d %-6.f %-6.f %-6.f %-6.f %-22s\n", stu[i].name, stu[i].number, stu[i].chinese, stu[i].math, stu[i].english, stu[i].average, stu[i].password);
}
fclose(pFile);
getchar();
}
}
//读取文件
void readOut()//从文件读取
{
int i = 0;
FILE* pFile;
pFile = fopen("STUDENT.txt", "r");//此处需要更换文件路径
if (pFile == NULL)
{
printf("\t\t\t打开文件失败。\n");
return;
}
else
{
while (fscanf(pFile, "%s %d %f %f %f %f %s\n", &stu[i].name, &stu[i].number, &stu[i].chinese, &stu[i].math, &stu[i].english, &stu[i].average, &stu[i].password)!=EOF)//读取一组数据后指针指向下一组数据，并且判断是否指向最后一行
{
//fscanf(pFile, "%s %d %f %f %f %f %s\n", &stu[i].name, &stu[i].number, &stu[i].chinese, &stu[i].math, &stu[i].english, &stu[i].average, &stu[i].password);
i++;
}
nowStudentNumber = i;//此处为记录有多少条信息,后可改为宏变
i--;
fclose(pFile); //关闭文件；
}
}
////管理员端接入
//管理员界面
void adminInterface()//.管理员界面
{
while (1)
{
loop2: system("cls");
adminMemu();
int ch = 9;//读取选择
scanf("%d",&ch);
getchar();
switch (ch)
{
case 1://1. 录入学生成绩
creatAccount();
break;
case 2://2.查找学生信息
studentShow();//、
break;
case 3://3.删除学生信息
deleteAccount();
break;
case 4://4.按总成绩排序
sortGrade();//ChangeStudent();
break;
case 5://5.按照学号排序
sort();//RankStudent();
break;
case 6://6.统计学生总数
printf("\t");
printf("\t\t\t\t当前学生总数为：%d\n",nowStudentNumber);
printf("\t\t\t\t\t-----------按任意键返回菜单------------");
getch();
break;
case 0://退出系统
exit(0);
default:
;
}
//getchar();
}
return 0;
}
//管理员密码登录
void adminInPWD()
{
loop: system("cls");
printf("\n\n\n\n\n\n");
printf("\t\t\t请输入管理员账号:");
char adminnumberin[20];
scanf("%s", adminnumberin);
char passwordin[20];//输入的密码
char admin[6] = "admin";
if (strcmp(admin, adminnumberin) == 0)
{
loop1: system("cls");
printf("\n\n\n\n\n\n");
printf("\t\t\t请输入密码:");
scanf("%s", passwordin);
if (strcmp(admin, passwordin) == 0)
{
adminInterface();
}
else
{
printf("\n\n\n\n\n\n");
printf("\t\t\t密码输入错误！！");
sleep(1);
}
goto loop1;
}
else{
printf("\n\n\n\n\n\n");
printf("\t\t\t账号输入错误！！");
sleep(1);
goto loop;
}
}
//管理员添加学生信息
void creatAccount()
{
int i = nowStudentNumber;
system("cls");
printf("\n\n\n\n\n\n");
printf("\t\t\t\t\t\t请输入学生学号:");
scanf("%d", &temporary[i].number);
printf("\n\n\t\t\t\t\t\t请输入学生姓名:");
scanf("%s", &temporary[i].name);
printf("\n\n\t\t\t\t\t\t请输入语文，数学，英语三科成绩\n");
printf("\t\t\t\t\t\t");
scanf("%f %f %f", &temporary[i].chinese, &temporary[i].math, &temporary[i].english);
temporary[i].average = temporary[i].chinese + temporary[i].math + temporary[i].english;
strcpy(temporary[i].password, "123456");
printf("\n\n\t\t\t\t\t\t学生的默认密码为123456!");
//strcpy(stu[nowStudentNumber], temporary[0]);
stu[i] = temporary[i];
nowStudentNumber = i + 1;
writeIn();
readOut();
}
//管理员查询单个信息
void studentShow()
{
readOut();
int flag, s;//此处变量用来接收查询的学号
char name[10];//此处用来接收查询的学生姓名
int flag1 = 0;//此处变量用来无法查询到学号时返回变量
int number;//此处接收用户个数
system("cls");
printf("\n\n\n\n");
printf("\t\t\t按照学号查询，请按“1”\n");
printf("\t\t\t按照姓名查询，请按“2”\n");
printf("\t\t\t返回上一菜单，请按“0”\n");
printf("\t\t\t请输入查询方式\n");//按照不同方式进行查询
printf("\t\t\t");
scanf("%d", &flag);
if(0 == flag)
return ;
if (1 == flag)
{
system("cls");
printf("\n\n\n\n");
printf("\t\t\t--------------------------请输入要查询的学号:--------------------------\n");
printf("\t\t\t");
scanf("%d", &s);
number = nowStudentNumber;
for (int i = 0; i < number; i++)
{
if (stu[i].number == s)
{
system("cls");
printf("\n\n\n");
printf("\t\t\t%-9s %-9s %-6s %-6s %-6s %-6s\n", "名字", "学号", "语文", "数学", "英语", "总分");
printf("\t\t\t-------------------------------------------------------------------\n");
printf("\t\t\t%-9s %-9d %-6.1f %-6.1f %-6.1f %-6.1f\n", stu[i].name, stu[i].number, stu[i].chinese, stu[i].math, stu[i].english, stu[i].average);
printf("\n\n\n");
printf("\t\t\t-------------------------按任意键返回上一界面----------------------\n");
getch();
flag1 = 1;
return;
}
}
if (flag1 == 0)
{
printf("\n\n");
printf("\t\t\t--------------------------查询不到当前学生信息--------------------------\n");
printf("\t\t\t------------------------------按任意键返回------------------------------");
getch();
}
}
if (2 == flag)
{
printf("\t\t\t--------------------------请输入要查询的学生姓名：--------------------------\n");
scanf("%s", name);
number = nowStudentNumber; //此处需补
for (int i = 0; i < number; i++)
{
if (0 == strcmp(stu[i].name, name))
{
system("cls");
printf("\n\n\n");
printf("\t\t\t%-9s %-9s %-6s %-6s %-6s %-6s\n", "名字", " 学号", "语文", "数学", "英语", "总分");
printf("\t\t\t-------------------------------------------------------------------\n");
printf("\t\t\t%-9s %-9d %-6.1f %-6.1f %-6.1f %-6.1f\n", stu[i].name, stu[i].number, stu[i].chinese, stu[i].math, stu[i].english, stu[i].average);
printf("\n\n\n");
printf("\t\t\t-------------------------按任意键返回上一界面----------------------\n");
getch();
flag1 = 1;
return ;
}
}
if (flag1 == 0)
{
printf("\n\n");
printf("\t\t\t--------------------------查询不到当前学生信息--------------------------\n");
printf("\t\t\t------------------------------按任意键返回------------------------------");
getch();
}
}
}
//管理员端按学号查询
void sort()
{
struct isStudent MODLE;
int i, n, j;
n = nowStudentNumber;//此处记录传入的用户个数
isStudent temp[MAX];
for (int h = 0; h < n; h++)
{
temp[h] = stu[h];
}
for (i = 0; i < n; i++)
for (j = 0; j < n - i; j++)
if (temp[j].number < temp[j + 1].number)
{
MODLE = temp[j];
temp[j] = temp[j + 1];
temp[j + 1] = MODLE;
}
system("cls");
printf("\n\n\n");
printf("\t\t\t%-9s %-9s %-6s %-6s %-6s %-6s\n", " 名字", " 学号", "语文", "数学", "英语", "总分");
printf("\t\t\t-------------------------------------------------------------------\n");
printf("\n");
for (i = 0; i < nowStudentNumber; i++)
{
printf("\t\t\t%-9s %-10d %-6.1f %-6.1f %-6.1f %-6.1f\n", temp[i].name, temp[i].number, temp[i].chinese, temp[i].math, temp[i].english, temp[i].average);
}
printf("\n");
printf("\t\t\t--------------------------输入任意键继续--------------------------\n");
getch();
}
//按成绩排序
void sortGrade()
{ //readOut();
struct isStudent MODRE;
int i, n, j;
n = nowStudentNumber;//此处记录传入用户的个数
isStudent temp[MAX];
for (int h = 0; h < n; h++)
{
temp[h] = stu[h];
}
for (i = 0; i < n; i++)
for (j = 0; j < n - i; j++)
if (temp[j].average < temp[j + 1].average)
{
MODRE = temp[j];
temp[j] = temp[j + 1];
temp[j + 1] = MODRE;
}
system("cls");
printf("\n\n\n");
printf("\t\t\t%-9s %-9s %-6s %-6s %-6s %-6s\n", " 名字", " 学号", "语文", "数学", "英语", "总分");
printf("\t\t\t-------------------------------------------------------------------\n");
printf("\n");
for (i = 0; i < nowStudentNumber; i++)
{
printf("\t\t\t%-9s %-10d %-6.1f %-6.1f %-6.1f %-6.1f\n", temp[i].name, temp[i].number, temp[i].chinese, temp[i].math, temp[i].english, temp[i].average);
}
printf("\n");
printf("\t\t\t--------------------------输入任意键继续--------------------------\n");
getch();
}
////学生端内容
//学生界面
void studentInterface(int studentnumber13)//这里形参代表找到的学生学号
{
while (1)
{
system("cls");
printf("\n\n\n\n\n\n");
printf("\t\t\t\t Welcome to the Student achievement management system\n");
printf("\t\t\t\t\t ～ (((^^)(^^))) \n");
printf("\t\t\t\t\t┌────────────────────────────────────┐\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ 1.查询个人信息 │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ 2.修改账号密码 │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t│ 3.退出 │\n");
printf("\t\t\t\t\t│ │\n");
printf("\t\t\t\t\t└────────────────────────────────────┘\n");
printf("\t\t\t\t\t请输入:");
int i;
scanf("%d", &i);
if (i == 1)
{
studentFindShow(studentnumber13);//searchPersonInformation_asNumber(student* p,len);
}
if (i == 2)
{
changeTheSecurityCode(studentnumber13);//修改账户密码
}
if (i == 3)
{
exit(0);//退出，返回上一界面（go doing）
}
getchar();
}
}
//学生端密码登录
void studentInPWD()
{
// for(int j=0;j< nowStudentNumber;j++)
// {
//
// printf("%s %d %f %f %f %f %s",stu[j].name,stu[j].number,stu[j].chinese,stu[j].match,stu[j].english,stu[j].average,stu[j].stu[20]);
//
// }
loop9: system("cls");
printf("\n\n\n");
printf("\t\t\t请输入学号:");
int studentnumberin;
scanf("%d", &studentnumberin);
int flag12=0;//记录学生的账号是哪一个
int flag = 0;//判断是否找到了学生账号
char passwordin[20];//输入的密码
readOut();
for (int i = 0; i < nowStudentNumber; i++)
{
if (stu[i].number == studentnumberin)
{
loop5: system("cls");
printf("\n\n\n");
printf("\t\t\t请输入密码:");
scanf("%s", passwordin);
flag12 = 1;
if (strcmp(passwordin, stu[i].password) == 0)
{
flag = 1;
studentInterface(studentnumberin);//这里将找到的学生编号传到下一界面
}
}
}
if(flag!=0)
{
printf("\n\n\n\n\n\n");
printf("\t\t\t密码输入错误！！");
sleep(1);
goto loop5;
}
if(flag12!=0)
{
fflush(stdin);
printf("\n\n\n\n\n\n");
printf("\t\t\t账号输入错误！！");
sleep(2);
goto loop9;
}
// getch();
//
// system("cls");
/*
if (flag == 0)
{
printf("抱歉，查无此账号\n");
getchar();
getch();
return;
}
*/
// getchar();
}
//学生端展示个人信息
void studentFindShow(int studentnumber)
{
int flag, s;//此处变量用来接收查询的学号
char name[10];//此处用来接收查询的学生姓名
int flag1 = 0;//此处变量用来无法查询到学号时返回变量
int number;//此处接收用户个数
number = nowStudentNumber;
system("cls");
printf("\n\n\t\t\t%-9s %-9s %-6s %-6s %-6s %-6s\n", "名字", "学号", "语文", "数学", "英语", "总分");
printf("\t\t\t-------------------------------------------------------------------\n");
for (int i = 0; i < number; i++)
{
if (stu[i].number == studentnumber)
{
printf("\n\t\t\t %-9s %-9d %-6.1f %-6.1f %-6.1f %-6.1f\n", stu[i].name, stu[i].number, stu[i].chinese, stu[i].math, stu[i].english, stu[i].average);
printf("\n\n\n");
printf("\t\t\t--------------------------按任意键返回-----------------------------");
getch();
flag1 = 1;
break;
}
}
}
//学生端修改密码
void changeTheSecurityCode(int studentNumber13)
{
system("cls");
char tmp1[20];
int i;
for (i = 0; i <= nowStudentNumber; i++)
{
if (stu[i].number == studentNumber13)
{
break;
}
}
printf("\n\n\n");
printf("\t\t\t--------------------------请输入新密码--------------------------\n");
printf("\t\t\t");
scanf("%s", &tmp1);
strcpy(stu[i].password, tmp1);
system("cls");
writeIn();
printf("\n\n\n");
printf("\t\t\t--------------------------修改密码成功--------------------------\n");
printf("\t\t\t--------------------------按任意键返回--------------------------\n");
getch();
return 0;
}
//删除学生信息
void deleteAccount()
{
isStudent Temporary[MAX];//临时数组用来储存内容
int studentnumber=5;//要求的学生学号
int number;//学生人数
int flag = 0;//判断输入是否存在
int g = 0;//除被删学生外其他人计数
loop5: system("cls");
printf("\n\n\n");
printf("\t\t\t--------------------------请输入要删除的学生学号:----------------------\n");
printf("\t\t\t----------------------------按“0”返回主菜单-------------------------\n");
printf("\n\n\t\t\t");
scanf("%d", &studentnumber);
getchar();
if(0==studentnumber)
return ;
number = nowStudentNumber;
for (int i = 0; i < number; i++)
{
if (stu[i].number == studentnumber)
{
flag = 1;
stu[i].number = 0;//将该学生学号归零
}
}
if (flag == 0)
{
printf("\n\n");
printf("\t\t\t-------------------不存在该学生学号，请重新输入----------------------\n");
Sleep(30);
goto loop5;
}
else
{
for (int j = 0; j < number; j++)//j是stu内学生
{
if (stu[j].number != 0)
{
Temporary[g] = stu[j];//按顺序将内容传输
g++;//这样就是输入一个加一个计数了，判断失败g不加j加一
}
}
char ch;//写入文件
FILE* pFile;
pFile = fopen("STUDENT.txt", "w");//状态，覆写
if (pFile == NULL)
{
printf("\t\t\t写入文件失败。\n");
printf("\t\t\t文件保存错误。\n");
printf("\t\t\t输入任意键退出。\n");
getch();
return 0;//以不正常状态退出
}
else
{
//将所有内容写入文件
for (int i = 0; i < g; i++)
{
fprintf(pFile, "%-9s %-9d %-6.1lf %-6.1lf %-6.1lf %-6.1lf %-22s\n", Temporary[i].name, Temporary[i].number, Temporary[i].chinese, Temporary[i].math, Temporary[i].english, Temporary[i].average, Temporary[i].password);
}
fclose(pFile);
//getchar();
readOut();
printf("\t\t\t--------------------------删除成功！-------------------------------------");
getch();
}
}
}
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