/*
Name: mis_sims.c
Author: x-bit
Description: 简单的学生信息管理系统
Date: 07-11-2004
*/
#include <stdio.h>
#include <string.h>
#include <conio.h>
#include <process.h>
#define MAX 500 /*定义存储容量*/
typedef struct
{
int month, day, year; /*出生年月*/
}BT;
typedef struct
{
int number; /*学号*/
char name[13]; /*姓名*/
char sex[7]; /*性别:male or female*/
BT birth; /*出生年月MM-DD-YY*/
char addr[35]; /*家庭住址*/
}ST;
ST student[MAX]; /*定义student[MAX]为全局变量*/
/****************函数声明**********************/
void menu(); /*显示菜单*/
void menu_done(); /*菜单响应*/
char get_menu_choice(); /*获取菜单选择信息*/
FILE *file_operate(char *mode); /*文件操作模块*/
void inf_add(FILE *fp); /*添加学生信息*/
void inf_list(FILE *fp); /*显示学生信息*/
void inf_search(FILE *fp); /*查找学生信息*/
void inf_change(FILE *fp); /*修改学生信息*/
void inf_del(FILE *fp); /*删除学生信息*/
void file_backup(); /*文件备份*/
void psw_check(); /*密码验证机制*/
void set_psw(); /*设置密码*/
/*-------------------------The main function-----------------------*/
int main()
{
system("cls");
psw_check();
menu_done();
return 0;
}
/*-------------------------The main function-----------------------*/
/*******************************************************************/
/* 菜单 */
/*******************************************************************/
void menu()
{
printf("\t \\\\\\|/// \n");
printf("\t \\\\~~ ~~// \n");
printf("\t ( @ @ ) \n");
printf("\t+-------oOOo---------(_)-----------oOOo-----+\n");
printf("\t| MIS-----SMIS |\n");
printf("\t| Student Management Information System |\n");
printf("\t|-------------------------------------------|\n");
printf("\t| 1. Input data | 5. Delete data |\n");
printf("\t| 2. Display data | 6. Backup data |\n");
printf("\t| 3. Search data | 7. Set password |\n");
printf("\t| 4. Change data | 0. Exit |\n");
printf("\t|-------------------------------------------|\n");
printf("\t| x-bit (C) 2004. |\n");
printf("\t+-------------------------------------------+\n");
}
/*******************************************************************/
/* 菜单响应模块 */
/*******************************************************************/
void menu_done()
{
while(1)
{
menu();
switch(get_menu_choice())
{
case '1':
inf_add(file_operate("a"));
system("pause");
system("cls");
break;
case '2':
inf_list(file_operate("rb"));
system("pause");
system("cls");
break;
case '3':
inf_search(file_operate("rb"));
system("pause");
system("cls");
break;
case '4':
inf_change(file_operate("rb"));
system("pause");
system("cls");
break;
case '5':
inf_del(file_operate("r"));
system("pause");
system("cls");
break;
case '6':
file_backup();
system("pause");
system("cls");
break;
case '7':
set_psw();
system("pause");
system("cls");
break;
case '0':
printf("Thank you for use this program.\n");
system("pause");
system("cls");
exit(1); /*程序正常退出*/
}
}
}
/*******************************************************************/
/* 接收菜单选择 */
/*******************************************************************/
char get_menu_choice()
{
char menu_choice;
do
{
fflush(stdin);
printf("Please choice: ");
scanf("%c", &menu_choice);
if(menu_choice<'0' || menu_choice>'7')
puts("input error, try again.");
}while(menu_choice<'0' || menu_choice>'7');
return menu_choice;
}
/*******************************************************************/
/* 文件操作 */
/*******************************************************************/
FILE *file_operate(char *mode)
{
char choise;
FILE *fp;
do
{
fflush(stdin);
if((fp=fopen("student.dat", mode))==NULL) /*打开文件*/
{
puts("File operation failure");
puts("Try Again(y/n)?");
scanf("%c", &choise);
}
}while(choise=='y' || choise=='Y');
if(choise=='n' || choise=='N')
exit(0); /*出现异常而退出*/
return fp;
}
/*******************************************************************/
/* 输入资料 */
/*******************************************************************/
void inf_add(FILE *fp)
{
int i=0; /*初始化索引值变量*/
char choice='y';
do
{
printf("No.(20040001): ");
scanf("%d", &student[i].number);
printf("Name(less than 12 characters): ");
scanf("%s", student[i].name);
printf("Sex(male or female): ");
scanf("%s", student[i].sex);
printf("Birthday:\n");
printf(" year: ");
scanf("%d", &student[i].birth.year);
printf(" month: ");
scanf("%d", &student[i].birth.month);
printf(" day: ");
scanf("%d", &student[i].birth.day);
printf("Address: ");
scanf("%s", student[i].addr);
if(fwrite(&student[i], sizeof(ST), 1, fp)!=1)
puts("data write error.");
i++;
fflush(stdin);
printf("Continue(y/n)?");
scanf("%c",&choice);
}while((choice=='y' || choice=='Y'));
fclose(fp);
}
/*******************************************************************/
/* 查找资料 */
/*******************************************************************/
void inf_search(FILE *fp)
{
int i, m;
char search_name[20]; /*查找姓名变量*/
char choice='y';
for(i=0; feof(fp)==0; i++) /*读取文件*/
{
if(fread(&student[i], sizeof(ST), 1, fp)!=1 && feof(fp)==0)
puts("error");
}
m=i-1; /*m被赋值为数组非空数据最大索引值*/
do
{
fflush(stdin);
puts("Enter the name for searching: ");
gets(search_name);
for(i=0; i<m; i++) /*遍历数组*/
{
if(strcmp(search_name, student[i].name)==0)
/*判断是否有要查找的学生姓名，有则显示数据*/
{
printf("No.: %d Name: %s Sex: %s Birth: %d-%d-%d
Address: %s\n",
student[i].number, student[i].name, student
[i].sex,
student[i].birth.month, student[i].birth.day,
student[i].birth.year, student[i].addr);
}
}
if(feof(fp)!= 0)
{
puts("searching done.");
}
puts("continue(y/n)?");
scanf("%c",&choice);
}while(choice=='y' || choice=='Y');
fclose(fp);
}
/*******************************************************************/
/* 显示资料 */
/*******************************************************************/
void inf_list(FILE *fp)
{
int i, m;
for(i=0; feof(fp)==0; i++)
{
if((fread(&student[i], sizeof(ST), 1, fp))!=1 && feof(fp)==0)
{
puts("error");
}
}
m=i-1;
printf("There %d Record:\n", m);
printf("Number Name Sex Birth Address\n");
for(i=0; i<m; i++)
{
printf("%-8d %-12s %-6s %-2d-%-2d-%-4d %-35s\n",
student[i].number, student[i].name, student[i].sex,
student[i].birth.month, student[i].birth.day, student
[i].birth.year,
student[i].addr);
}
if(feof(fp)!=0)
{
puts("Display Informtion Done.");
}
fclose(fp);
}
/*******************************************************************/
/* 修改资料 */
/*******************************************************************/
void inf_change(FILE *fp)
{
int number_temp;
char choice;
int i, m, j=0;
FILE *fp_update;
for(i=0; feof(fp)==0; i++) /*读取文件*/
if(fread(&student[i], sizeof(ST), 1, fp)!=1 && feof
(fp)==0)
puts("error");
m=i-1;
do
{
fflush(stdin);
printf("Enter number for change: ");
scanf("%d", &number_temp);
for(i=0; i<m; i++)
if(number_temp==student[i].number)
{
j=i;
printf("No.: %d Name: %s Sex: %s Birth: %d-%d-%d
Address: %s\n",
student[i].number, student[i].name, student
[i].sex,
student[i].birth.month, student[i].birth.day,
student[i].birth.year, student[i].addr);
}
if(j==0)
{
puts("No this record.");
break;
}
fflush(stdin);
printf("change data %d (y/n)?", number_temp); /*修改确认*/
scanf("%c",&choice);
if (choice=='n' || choice=='N') /*修改资料*/
continue;
printf("No.: ");
scanf("%d", &student[j].number);
printf("Name: ");
scanf("%s", student[j].name);
printf("Sex: ");
scanf("%s", student[j].sex);
printf("Birthday:\n");
printf(" Year: ");
scanf("%d", &student[j].birth.year);
printf(" month: ");
scanf("%d", &student[j].birth.month);
printf(" day: ");
scanf("%d", &student[j].birth.day);
printf("Address: ");
scanf("%s", student[j].addr);
fflush(stdin);
printf("continue(y/n)?");
scanf("%c",&choice);
}while ( choice == 'y' || choice == 'Y' );
fp_update=file_operate("w");
for(i=0; i<m; i++)
if(fwrite(&student[i], sizeof(ST), 1, fp_update)!=1)
puts("update error.");
puts("change done.");
fclose(fp_update);
}
/*******************************************************************/
/* 删除资料 */
/*******************************************************************/
void inf_del(FILE *fp)
{
int i, m, t=-1;
int number_temp;
char choice='y';
for(i=0; feof(fp)==0; i++)
{
if(fread(&student[i], sizeof(ST), 1, fp)!=1 && feof(fp)==0)
puts("error");
}
m=i-2;
do
{
fflush(stdin);
printf("Enter the number for delete: ");
scanf("%d", &number_temp);
for(i=0; i<m+1; i++)
{
if(student[i].number==number_temp)
{
/*删除前显示学生资料*/
printf("No.: %d Name: %s Sex: %s Birth: %d-%d-%d
Address: %s\n",
student[i].number, student[i].name, student
[i].sex,
student[i].birth.month, student[i].birth.day,
student[i].birth.year, student[i].addr);
fflush(stdin);
printf("delete %d (y/n)?", number_temp); /*删除确认*/
scanf("%c",&choice);
if (choice=='n' || choice=='N')
break;
for(t=i; t<m; t++)
student[t]=student[t+1]; /*删除数据*/
puts("delete data done.");
m--;
}
}
if(t==-1 && choice!='n' && choice!='N')
printf("No %d's data!\n",number_temp);
fflush(stdin);
printf("continue(y/n)?");
scanf("%c",&choice);
}while ( choice == 'y' || choice == 'Y' );
fclose(fp);
fp=file_operate("w");
for(i=0; i<m+1; i++) /*存盘*/
{
if(fwrite(&student[i], sizeof(ST), 1, fp)!=1)
puts("error");
}
fclose(fp);
}
/*******************************************************************/
/* 文件备份 */
/*******************************************************************/
void file_backup()
{
FILE *fp, *fp_bak;
char ch;
char filename[12];
/*存放备份文件文件名，文件名要求用传统的8.3式,如filename.bak*/
printf("Enter the backup file name: ");
scanf("%s", filename);
fp=file_operate("rb");
fp_bak=fp;
if((fp_bak=fopen(filename, "wb"))==NULL)
{
puts("backup file error.");
exit(0);
}
while(!feof(fp))
{
ch=fgetc(fp);
fputc(ch, fp_bak);
}
fclose(fp);
fclose(fp_bak);
puts("file backup success.");
}
/*******************************************************************/
/* 密码验证 */
/*******************************************************************/
void psw_check()
{
char psw[8], psw_temp[8];
int i, leap;
FILE *fp;
if((fp=fopen("sn.dat", "rb"))==NULL) /*读取密码，如不成功则要
求设置密码*/
{
puts("You must set password first.");
menu_done();
}
if((fread(psw, sizeof(psw), 1, fp))!=1)
puts("error.");
for(i=0; i<8; i++) /*解密*/
psw[i]=~psw[i];
do
{
leap=0;
printf("Enter password: ");
for(i=0; i<8; i++)
{
psw_temp[i]=getch();
printf("*");
if(psw_temp[i]==psw[i])
++leap;
}
if(leap!=8)
{
puts("\nInvalid password!");
}
else
printf("\n");
fclose(fp);
}while(leap!=8);
}
/*******************************************************************/
/* 设置密码 */
/*******************************************************************/
void set_psw()
{
char psw[8], psw_temp[8];
int i=0, leap=0;
FILE *fp;
do
{
printf("Enter password: "); /*输入密码*/
for(i=0; i<8; i++)
{
fflush(stdin);
psw[i]=getch();
printf("*");
}
printf("\nConfirm password: "); /*再输入一次密码*/
for(i=0; i<8; i++)
{
fflush(stdin);
psw_temp[i]=getch();
printf("*");
}
for(i=0; i<8; i++) /*确认密码*/
if(psw[i]==psw_temp[i])
leap++;
if(leap==8)
{
printf("\nSet password success.\n");
for(i=0; i<8; i++)
psw[i]=~psw[i]; /*密码加密*/
if((fp=fopen("sn.dat", "wb"))==NULL) /*密码存
盘*/
puts("error.");
if((fwrite(psw, sizeof(psw), 1, fp))!=1)
puts("save password error.");
fclose(fp);
}
else
printf("\n");
}while(leap!=8);
} 
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