c教务管理系统程序设计

#include<stdio.h>

#include<stdlib.h>

#include<conio.h>

#include<dos.h>

#include<string.h>

#define LEN sizeof(struct student)

#define FORMAT "%-8d%-15s%-12.1lf%-12.1lf%-12.1lf%-12.1lfn"

#define DATA stu[i].num,stu[i].name,stu[i].elec,stu[i].expe,stu[i].requ,stu[i].sum

struct student

{ int num

  char name[15]

  double elec

  double expe

  double requ

  double sum

}

struct student stu[50]

void in()

void show()

void order()

void del()

void modify()

void menu()

void insert()

void total()

void search()

void main()

{ int n

  menu()

  scanf("%d",&n)

  while(n)

  { switch(n)

     { case 1: in()break

       case 2: search()break

       case 3: del()break

       case 4: modify()break

       case 5: insert()break

       case 6: order()break

       case 7: total()break

   case 8: show()break

       default:break

     }

    getch()

    menu()

    scanf("%d",&n)

  }

}

void in()

{ int i,m=0

  char ch[2]

  FILE *fp

  if((fp=fopen("data.txt","a+"))==NULL)

  { 

  printf("can not openn")

  return

  }

  while(!feof(fp))

  {

  if(fread(&stu[m] ,LEN,1,fp)==1)

  m++

  }

  fclose(fp)

  if(m==0)

  printf("No record!n")

  else

  {

  system("cls")

          show()

  }

  if((fp=fopen("data.txt","wb"))==NULL)

  {

  printf("can not openn")

  return

  }

  for(i=0i<mi++)

   fwrite(&stu[i] ,LEN,1,fp)

  printf("please input(y/n):")

  scanf("%s",ch)

while(strcmp(ch,"Y")==0||strcmp(ch,"y")==0)

{

    printf("number:")

scanf("%d",&stu[m].num)

    for(i=0i<mi++)

    if(stu[i].num==stu[m].num)

    {

    printf("the number is existing,press any to continue!")

    getch()

    fclose(fp)

    return

    }

     printf("name:")

 scanf("%s",stu[m].name)

     printf("elective:")

     scanf("%lf",&stu[m].elec)

     printf("experiment:")

 scanf("%lf",&stu[m].expe)

     printf("required course:")

 scanf("%lf",&stu[m].requ)

     stu[m].sum=stu[m].elec+stu[m].expe+stu[m].requ

     if(fwrite(&stu[m],LEN,1,fp)!=1)

     {

 printf("can not save!")

 getch()

 }

     else

 {

 printf("%s saved!n",stu[m].name)

 m++

 }

     printf("continue?(y/n):")

     scanf("%s",ch)

  }

  fclose(fp)

  printf("OK!n")

}

void show()

 { FILE *fp

   int i,m=0

   fp=fopen("data.txt","rb")

   while(!feof(fp))

   {

   if(fread(&stu[m] ,LEN,1,fp)==1) 

   m++

   }  

   fclose(fp)

   printf("number  name           elective    experiment  required    sumtn")

   for(i=0i<mi++)

       { 

   printf(FORMAT,DATA)

       }

     }

void menu()

{

  system("cls")

  printf("nnnnn")

  printf("tt|---------------------STUDENT-------------------|n")

  printf("tt|t 0. exit                                |n")

  printf("tt|t 1. input record                        |n")

  printf("tt|t 2. search record                       |n")

  printf("tt|t 3. delete record                       |n")

  printf("tt|t 4. modify record                       |n")

  printf("tt|t 5. insert record                       |n")

  printf("tt|t 6. order                               |n")

  printf("tt|t 7. number                              |n")

  printf("tt|t 8. show                                |n")

  printf("tt|-----------------------------------------------|nn")

  printf("tttchoose(0-8):")

}

void order()

{ FILE *fp

  struct student t

  int i=0,j=0,m=0

  if((fp=fopen("data.txt","r+"))==NULL)

     { 

printf("can not open!n")

        return

  }

  while(!feof(fp)) 

  if(fread(&stu[m] ,LEN,1,fp)==1) 

  m++

  fclose(fp)

  if(m==0) 

  {

  printf("no record!n")

  return

  }

  if((fp=fopen("data.txt","wb"))==NULL)

     {

  printf("can not openn")

  return}

  for(i=0i<m-1i++)

      for(j=i+1j<mj++)

          if(stu[i].sum<stu[j].sum)

          { t=stu[i]stu[i]=stu[j]stu[j]=t}

  if((fp=fopen("data.txt","wb"))==NULL)

     { printf("can not openn")return}

  for(i=0i<mi++)

      if(fwrite(&stu[i] ,LEN,1,fp)!=1)

       { 

        printf("%s can not save!n") 

        getch()

      }

  fclose(fp)

  printf("save successfullyn")

}

void del()

{FILE *fp

  int snum,i,j,m=0

  char ch[2]

  if((fp=fopen("data.txt","r+"))==NULL)

     { printf("can not openn")return}

  while(!feof(fp))  if(fread(&stu[m],LEN,1,fp)==1) m++

  fclose(fp)

  if(m==0) 

  {

  printf("no record!n")

  return

  }

  printf("please input the number:")

  scanf("%d",&snum)

    for(i=0i<mi++)

     if(snum==stu[i].num)

     break

     printf("find the student,delete?(y/n)")

     scanf("%s",ch)

      if(strcmp(ch,"Y")==0||strcmp(ch,"y")==0)

      for(j=ij<mj++)

      stu[j]=stu[j+1]

      m--

      if((fp=fopen("data.txt","wb"))==NULL)

     { printf("can not openn")return}

  for(j=0j<mj++)

      if(fwrite(&stu[j] ,LEN,1,fp)!=1)

       { printf("can not save!n")

      getch()}

  fclose(fp)

  printf("delete successfully!n")

}

void search()

{ FILE *fp

  int snum,i,m=0

  char ch[2]

  if((fp=fopen("data.txt","rb"))==NULL)

     { printf("can not openn")return}

  while(!feof(fp))  if(fread(&stu[m],LEN,1,fp)==1) m++

  fclose(fp)

  if(m==0) {printf("no record!n")return}

  printf("please input the number:")

  scanf("%d",&snum)

  for(i=0i<mi++)

     if(snum==stu[i].num)

     { printf("find the student,show?(y/n)")

     scanf("%s",ch)

      if(strcmp(ch,"Y")==0||strcmp(ch,"y")==0) 

        {

          printf("number  name           elective    experiment  required    sumtn")

          printf(FORMAT,DATA)

  break

     }

     }   

  if(i==m) printf("can not find the student!n")

}

void modify()

{ FILE *fp

  int i,j,m=0,snum

  if((fp=fopen("data.txt","r+"))==NULL)

     { printf("can not openn")return}

  while(!feof(fp))  

 if(fread(&stu[m],LEN,1,fp)==1) m++

  if(m==0) {printf("no record!n")

  fclose(fp)

  return

  }

  show()

  printf("please input the number of the student which do you want to modify!n")

  printf("modify number:")

  scanf("%d",&snum)

  for(i=0i<mi++)

  if(snum==stu[i].num)

  break

  printf("find the student!you can modify!n")

  printf("name:")

  scanf("%s",stu[i].name)

          printf("elective:")

  scanf("%lf",&stu[i].elec)

          printf("experiment:")

  scanf("%lf",&stu[i].expe)

          printf("required course:")

  scanf("%lf",&stu[i].requ)

  printf("modify successful!")

  stu[i].sum=stu[i].elec+stu[i].expe+stu[i].requ

  if((fp=fopen("data.txt","wb"))==NULL)

     { printf("can not openn")return}

  for(j=0j<mj++)

  if(fwrite(&stu[j] ,LEN,1,fp)!=1)

       { printf("can not save!") getch() }

  fclose(fp)

 }

void insert()

{ FILE *fp

  int i,j,k,m=0,snum

  if((fp=fopen("data.txt","r+"))==NULL)

     { printf("can not openn")return}

  while(!feof(fp))  

 if(fread(&stu[m],LEN,1,fp)==1) m++

  if(m==0) {printf("no record!n")

  fclose(fp)

  return

  }

  printf("please input position where do you want to insert!(input the number)n")

  scanf("%d",&snum)

  for(i=0i<mi++)

  if(snum==stu[i].num)

  break

  for(j=m-1j>ij--)

           stu[j+1]=stu[j]

  printf("now please input the new information.n")

          printf("number:")

  scanf("%d",&stu[i+1].num)

  for(k=0k<mk++)

    if(stu[k].num==stu[i+1].num)

    {

    printf("the number is existing,press any to continue!")

    getch()

    fclose(fp)

    return

    }

  printf("name:")

  scanf("%s",stu[i+1].name)

          printf("elective:")

  scanf("%lf",&stu[i+1].elec)

          printf("experiment:")

  scanf("%lf",&stu[i+1].expe)

          printf("required course:")

  scanf("%lf",&stu[i+1].requ)

  stu[i+1].sum=stu[i+1].elec+stu[i+1].expe+stu[i+1].requ

  if((fp=fopen("data.txt","wb"))==NULL)

     { printf("can not openn")return}

  for(k=0k<=mk++)

  if(fwrite(&stu[k] ,LEN,1,fp)!=1)

       { printf("can not save!") getch() }

  fclose(fp)

 }

void total()

{ FILE *fp

  int m=0

  if((fp=fopen("data.txt","r+"))==NULL)

     { printf("can not openn")return}

  while(!feof(fp))  

  if(fread(&stu[m],LEN,1,fp)==1) 

  m++

  if(m==0) {printf("no record!n")fclose(fp)return}

  printf("the class are %d students!n",m)

  fclose(fp)

 }

跪求c语言教务管理系统源代码

我去年做的

#include<time.h>

#include<stdio.h>

#include<conio.h>

#include <stdlib.h>

#define MAX 50

void input()

void sort()

void display()

void insert()

void del()

void average()

int now_no=0

struct student

{

int no

char name[20]

char sex[4]

float score1

float score2

float score3

float sort

float ave

float sum

}

struct student stu[MAX],*p

main()//主函数

{

char as

start: printf("ttt欢迎使用学生成绩管理系统nn")

//一下为功能选择模块

do{

printf("ntttt1.录入学员信息ntttt2.显示学员信息ntttt3.成绩排序信息ntttt4.添加学员信息ntttt5.删除学员信息ntttt6.退出n")

printf("tttt选择功能选项:")

as=getch()

switch(as)

{

case '1':

system("cls")

input()

break

case '2':

system("cls")

display()

break

case '3':

system("cls")

sort()

break

case '4':

system("cls")

insert()

break

case '5':

system("cls")

del()

break

case '6':

system("exit")

exit(0)

default:

system("cls")

goto start

}

}while(1)

//至此功能选择结束

}

void input()//原始数据录入模块

{

int i=0

char ch

do

{

printf("tttt1.录入学员信息n输入第%d个学员的信息n",i+1)

printf("n输入学生编号:")

scanf("%d",&stu[i].no)

fflush(stdin)

printf("n输入学员姓名:")

fflush(stdin)

gets(stu[i].name)

printf("n输入学员性别:")

fflush(stdin)

gets(stu[i].sex)

printf("n输入学员成绩:")

fflush(stdin)

scanf("%f",&stu[i].score1)

printf("n输入学员成绩:")

fflush(stdin)

scanf("%f",&stu[i].score2)

printf("n输入学员成绩:")

fflush(stdin)

scanf("%f",&stu[i].score3)

printf("nn")

i++

now_no=i

printf("%d",now_no)

printf("是否继续输入?(Y/N)")

ch=getch()

system("cls")

}

while(ch!='n')

system("cls")

}

void sort()//排序数据函数

{

struct student temp

int i,j

for(i=1i<now_noi++)

{

for(j=1j<=now_no-ij++)

{

if(stu[j-1].ave<stu[j].ave)

{temp=stu[j]

stu[j]=stu[j-1]

stu[j-1]=temp

}}}

}

void display()//显示数据函数

{

int i

char as

float ave

do

{

printf("tt班级学员信息列表n")

printf("t编号t姓名t性别t成绩t成绩t成绩t平均值n")

for(i=0i<now_noi++)

{

stu[i].sum=stu[i].score1+stu[i].score2+stu[i].score3

stu[i].ave=stu[i].sum/3

printf("t%dt%st%st%.2ft%.2ft%.2ft%.2fn",stu[i].no,stu[i].name,stu[i].sex,stu[i].score1,stu[i].score2,stu[i].score3,stu[i].ave)

}

printf("tt按任意键返回主菜单.")

as=getch()

goto exit

}

while(as!='n')

exit: system("cls")

}

void insert()//插入数据函数

{

char ch

do

{

printf("ntt输入新插入学员队信息n")

printf("n输入学生编号:")

scanf("%d",&stu[now_no].no)

fflush(stdin)

printf("n输入学员姓名:")

fflush(stdin)

gets(stu[now_no].name)

printf("n输入学员性别:")

fflush(stdin)

gets(stu[now_no].sex)

printf("n输入学员成绩:")

fflush(stdin)

scanf("%f",&stu[now_no].score1)

printf("n输入学员成绩:")

fflush(stdin)

scanf("%f",&stu[now_no].score2)

printf("n输入学员成绩:")

fflush(stdin)

scanf("%f",&stu[now_no].score3)

printf("nn")

now_no=now_no+1

sort()

printf("是否继续输入?(Y/N)")

ch=getch()

system("cls")

}

while(ch!='n')

}

void del()//删除数据函数

{

int inum,i,j

printf("输入要删除学员的编号:")

fflush(stdin)

scanf("%d",&inum)

for(i=0i<now_noi++)

{

if(stu[i].no==inum)

{

for(j=ij<now_noj++)

{

stu[i]=stu[i+1]

}

now_no=now_no-1

}

break

}

system("cls")

}

教务信息管理系统（C语言）

#include <stdio.h>

#include <string.h>

#include <windows.h>

struct student

{

long int num

char name[20]

int age

char sex[4]

char b[30]

char p[15]

}

int n=0

struct student stu[100]

struct student *p

void lr()

void ll()

void cx()

void xg()

void sc()

void main()

{

int z

printf("+---------------------------+n")

printf("| 欢迎使用学生信息管理系统 |n")

printf("+---------------------------+n")

printf("提示：为保证您的操作得到保存，请按正常顺序退出系统^_^n")

do

{

printf("nttt--------------------------------n")

printf("ttt+主菜单|n")

printf("ttt--------------------------------n")

printf("ttt+[1]----录入学生信息 |n")

printf("ttt+[2]----浏览学生信息 |n")

printf("ttt+[3]----查询学生信息 |n")

printf("ttt+[4]----删除学生信息 |n")

printf("ttt+[5]----修改学生信息 |n")

printf("ttt+[0]----退出系统 |n")

printf("ttt--------------------------------n")

printf("请输入您的选择：")

scanf("%d", &z)

system("color 2f")

switch(z)

{

case 0 :break

case 1 :lr()break

case 2 :ll()break

case 3 :cx()break

case 4 :sc()break

case 5 :xg()break

default:printf("n无效选项!")

}

}

while(z!= 0)

}

void lr()

{

int y

if(n==0)

p=stu

do

{

printf("--------------------n")

printf("请输入学生的学号:")

scanf("%ld",&p->num)

printf("请输入学生的姓名:")

scanf("%s",p->name)

printf("请输入学生的年龄:")

scanf("%d",&p->age)

printf("请输入学生的性别:")

scanf("%s",p->sex)

printf("请输入学生的地址:")

scanf("%s",p->b)

printf("请输入学生的电话:")

scanf("%s",p->p)

n++

p++

printf("n1.继续输入.n0.输入完毕.n")

printf("请选择：")

scanf("%d",&y)

}

while(y==1)

printf("提示：输入完毕!你一共输入%d个n",n)

}

void ll()

{

int i,j

if(n!=0)

{ printf("学生总数:%dn", n)

printf("学号t姓名t年龄t性别t地址tt电话n")

printf("-----------------------------------------------------n")

for(i=0i<ni++)

printf("%ldt%st%dt%st%stt%sn",stu[i].num,stu[i].name,stu[i].age,stu[i].sex,stu[i].b,stu[i].p)

}

else printf("提示:无学生数据，请输入数据！")

}

void cx()

{

int c

int w,i,j=0

char name[20]

if(n!=0)

{

do{printf("n")

printf("+--------------------+n")

printf("| 按学号查询 请按 1 |n")

printf("| 按姓名查询 请按 2 |n")

printf("| 取消请按 0 |n")

printf("+--------------------+n")

printf("请输入您的选择：")

scanf("%d", &c)

switch(c)

{

case 0:break

case 1:

printf("请输入学生的学号")

scanf("%ld", &w)

printf("n")

for(i=0i<ni++)

if(stu[i].num==w)

{

printf("n学号t姓名t年龄t性别t地址tt电话n")

printf("%ldt%st%dt%st%stt%sn",stu[i].num,stu[i].name,stu[i].age,stu[i].sex,stu[i].b,stu[i].p)

j=1

}

if(j==0)

printf("提示:没有该学生记录，请核对！")

break

case 2:

printf("请输入学生的姓名：")

scanf("%s", name)

printf("n")

for(i=0i<ni++)

if(strcmp(name,stu[i].name)==0)

{

printf("n学号t姓名t年龄t性别t地址tt电话n")

j=1

printf("%ldt%st%dt%st%stt%sn",stu[i].num,stu[i].name,stu[i].age,stu[i].sex,stu[i].b,stu[i].p)

}

if(j==0)

printf("提示:没有该学生记录，请核对！")

break

default:

printf("n提示:无效选项!")

break

}

}while(c!= 0)

}else printf("提示:无学生数据，请输入数据！")

return

}

void xg()

{

long int num

int i,j,c

if(n!=0)

{

printf("请输入您要修改的学生的学号：")

scanf("%ld", &num)

printf("n")

for(i=0i<ni++)

if(stu[i].num==num)

j=i

do{

printf("请选择您要修改的学生的信息内容：n")

printf("+----------------------+n")

printf("| 姓名 请按 1 |n")

printf("| 年龄 请按 2 |n")

printf("| 性别 请按 3 |n")

printf("| 学号 请按 4 |n")

printf("| 地址 请按 5 |n")

printf("| 电话 请按 6 |n")

printf("| 取消 请按 0 |n")

printf("+----------------------+n")

printf("请输入您的选择：")

scanf("%d", &c)

printf("n")

switch(c)

{

case 0:break

case 1:printf("请输入新姓名：")

scanf("%s",stu[j].name)

break

case 2:printf("请输入新年龄：")

scanf("%d",&stu[j].age)

break

case 3:printf("请输入新性别：")

scanf("%s",stu[j].sex)

break

case 4:printf("请输入新学号：")

scanf("%ld",&stu[j].num)

break

case 5:printf("请输入新地址：")

scanf("%s",stu[j].b)

break

case 6:printf("请输入新电话：")

scanf("%s",stu[j].p)

break

default:

printf("n无效选项!")

break

}

}while(c!= 0)

}else printf("提示:无学生数据，请输入数据！")

}

void sc()

{

long int num

int i,j,e

if(n!=0)

{

printf("学号t姓名t年龄t性别t地址tt电话n")

printf("-----------------------------------------------------n")

for(i=0i<ni++)

printf("%ldt%st%dt%st%stt%sn",stu[i].num,stu[i].name,stu[i].age,stu[i].sex,stu[i].b,stu[i].p)

printf("请输入您要删除的学生的学号：")

scanf("%ld", &num)

printf("n")

for(i=0i<ni++)

if(num==stu[i].num)

j=i

if(j!=(n-1))

{

for(e=i-1e<ne++,j++)

{

stu[j].num=stu[j+1].num

strcpy(stu[j].name,stu[j+1].name)

strcpy(stu[j].sex,stu[j+1].sex)

stu[j].age=stu[j+1].age

strcpy(stu[j].b,stu[j+1].b)

strcpy(stu[j].p,stu[j+1].p)

n--p--

}

}else {n--p--}

printf("提示:删除完毕！")

}elseprintf("提示:无学生数据，请输入数据！")

}

求........： 教务处任选课管理系统C语言程序

#include <stdio.h>

struct Student

{

int num

char name[20]

float score[3]

float avg

}stus[30]

void Add()//填加学员

void List()//学员详细列表

void Asc()//显示后三名学员

void Desc()//显示前三名学员

void Display()

void main()

{

int s

while(1)

{

printf("学员管理系统：n")

printf("1、增加学员n")

printf("2、学员详细列表n")

printf("3、显示前三名n")

printf("4、显示后三名n")

printf("5、显示平均成绩n")

printf("6、退出n")

printf("请选择：")

scanf("%d",&s)

switch(s)

{

case 1:

Add()

break

case 2:

List()

break

case 3:

Desc()

Display()

break

case 4:

Asc()

Display()

break

case 5:

Display()

break

case 6:

return

break

default:

printf("选择错误!n")

break

}

}

}

void Add()

{

int i,k

float sum

char c

for(i=0i<30i++)

{

printf("请输入第%d个学员信息：n",i+1)

printf("学号：")

scanf("%d",&stus[i].num)

printf("姓名：")

fflush(stdin)

scanf("%s",stus[i].name)

printf("请输入三门课的成绩：n")

sum=0

for(k=0k<3k++)

{

printf("%d:",k+1)

scanf("%f",&stus[i].score[k])

sum+=stus[i].score[k]

}

stus[i].avg=sum/3

printf("是否继续？")

fflush(stdin)

scanf("%c",&c)

if(c=='n' || c=='N')

return

}

}

void List()

{

int i,j=0

printf("学号t姓名t成绩1t成绩2t成绩3t平均n")

for(i=0i<30i++)

{

if(stus[i].num!=0)

{

printf("%dt%st%.2ft%.2ft%.2ft%.2fn",stus[i].num,stus[i].name,stus[i].score[0],stus[i].score[1],stus[i].score[2],stus[i].avg)

}

}

}

void Asc()

{

int i,j

struct Student c

for(i=0i<30i++)

{ for(j=0j<29-ij++)

if(stus[j].avg<stus[j+1].avg)

{

c=stus[j]

stus[j]=stus[j+1]

stus[j+1]=c

}

}

}

void Desc()

{

int i,j

struct Student c

for(i=0i<30i++)

{ for(j=0j<29-ij++)

if(stus[j].avg>stus[j+1].avg)

{

c=stus[j]

stus[j]=stus[j+1]

stus[j+1]=c

}

}

}

void Display()

{

int i,d=0

printf("学号t姓名t平均n")

for(i=0i<30i++)

{

if(stus[i].num!=0)

{

printf("%dt%st%.2fn",stus[i].num,stus[i].name,stus[i].avg)

d++

}

if(d==3)

break

}

}

看看我写的这个！

#include<stdio.h>

#include<stdlib.h>

#include<conio.h>

#include<dos.h>

#include<string.h>

#define LEN sizeof(struct student)

#define FORMAT "%-8d%-15s%-12.1lf%-12.1lf%-12.1lf%-12.1lfn"

#define DATA stu[i].num,stu[i].name,stu[i].elec,stu[i].expe,stu[i].requ,stu[i].sum

struct student

{ int num

char name[15]

double elec

double expe

double requ

double sum

}

struct student stu[50]

void in()

void show()

void order()

void del()

void modify()

void menu()

void insert()

void total()

void search()

void main()

{ int n

menu()

scanf("%d",&n)

while(n)

{ switch(n)

   { case 1: in()break

     case 2: search()break

     case 3: del()break

     case 4: modify()break

     case 5: insert()break

     case 6: order()break

     case 7: total()break

  case 8: show()break

     default:break

   }

  getch()

  menu()

  scanf("%d",&n)

}

}

void in()

{ int i,m=0

char ch[2]

FILE *fp

if((fp=fopen("data.txt","a+"))==NULL)

{

 printf("can not openn")

 return

}

while(!feof(fp))

{

 if(fread(&stu[m] ,LEN,1,fp)==1)

 m++

}

fclose(fp)

if(m==0)

 printf("No record!n")

else

{

 system("cls")

        show()

}

if((fp=fopen("data.txt","wb"))==NULL)

{

 printf("can not openn")

 return

}

for(i=0i<mi++)

 fwrite(&stu[i] ,LEN,1,fp)

printf("please input(y/n):")

scanf("%s",ch)

while(strcmp(ch,"Y")==0||strcmp(ch,"y")==0)

{

  printf("number:")

scanf("%d",&stu[m].num)

  for(i=0i<mi++)

   if(stu[i].num==stu[m].num)

   {

   printf("the number is existing,press any to continue!")

   getch()

   fclose(fp)

   return

   }

   printf("name:")

scanf("%s",stu[m].name)

   printf("elective:")

   scanf("%lf",&stu[m].elec)

   printf("experiment:")

scanf("%lf",&stu[m].expe)

   printf("required course:")

scanf("%lf",&stu[m].requ)

   stu[m].sum=stu[m].elec+stu[m].expe+stu[m].requ

   if(fwrite(&stu[m],LEN,1,fp)!=1)

   {

printf("can not save!")

getch()

}

   else

{

printf("%s saved!n",stu[m].name)

m++

}

   printf("continue?(y/n):")

   scanf("%s",ch)

}

fclose(fp)

printf("OK!n")

}

void show()

{ FILE *fp

 int i,m=0

 fp=fopen("data.txt","rb")

 while(!feof(fp))

 {

 if(fread(&stu[m] ,LEN,1,fp)==1)

 m++

 }

 fclose(fp)

 printf("number  name           elective    experiment  required    sumtn")

 for(i=0i<mi++)

     {

  printf(FORMAT,DATA)

     }

   }

void menu()

{

system("cls")

printf("nnnnn")

printf("tt|---------------------STUDENT-------------------|n")

printf("tt|t 0. exit                                |n")

printf("tt|t 1. input record                        |n")

printf("tt|t 2. search record                       |n")

printf("tt|t 3. delete record                       |n")

printf("tt|t 4. modify record                       |n")

printf("tt|t 5. insert record                       |n")

printf("tt|t 6. order                               |n")

printf("tt|t 7. number                              |n")

printf("tt|t 8. show                                |n")

printf("tt|-----------------------------------------------|nn")

printf("tttchoose(0-8):")

}

void order()

{ FILE *fp

struct student t

int i=0,j=0,m=0

if((fp=fopen("data.txt","r+"))==NULL)

   {

printf("can not open!n")

      return

}

while(!feof(fp))

if(fread(&stu[m] ,LEN,1,fp)==1)

 m++

fclose(fp)

if(m==0)

{

 printf("no record!n")

 return

}

if((fp=fopen("data.txt","wb"))==NULL)

   {

 printf("can not openn")

 return}

for(i=0i<m-1i++)

    for(j=i+1j<mj++)

        if(stu[i].sum<stu[j].sum)

        { t=stu[i]stu[i]=stu[j]stu[j]=t}

 if((fp=fopen("data.txt","wb"))==NULL)

   { printf("can not openn")return}

for(i=0i<mi++)

    if(fwrite(&stu[i] ,LEN,1,fp)!=1)

     {

      printf("%s can not save!n")

      getch()

    }

fclose(fp)

printf("save successfullyn")

}

void del()

{FILE *fp

int snum,i,j,m=0

char ch[2]

if((fp=fopen("data.txt","r+"))==NULL)

   { printf("can not openn")return}

while(!feof(fp))  if(fread(&stu[m],LEN,1,fp)==1) m++

fclose(fp)

if(m==0)

{

 printf("no record!n")

 return

}

printf("please input the number:")

scanf("%d",&snum)

  for(i=0i<mi++)

   if(snum==stu[i].num)

    break

   printf("find the student,delete?(y/n)")

   scanf("%s",ch)

    if(strcmp(ch,"Y")==0||strcmp(ch,"y")==0)

    for(j=ij<mj++)

     stu[j]=stu[j+1]

    m--

    if((fp=fopen("data.txt","wb"))==NULL)

   { printf("can not openn")return}

for(j=0j<mj++)

    if(fwrite(&stu[j] ,LEN,1,fp)!=1)

     { printf("can not save!n")

    getch()}

fclose(fp)

printf("delete successfully!n")

}

void search()

{ FILE *fp

int snum,i,m=0

char ch[2]

if((fp=fopen("data.txt","rb"))==NULL)

   { printf("can not openn")return}

while(!feof(fp))  if(fread(&stu[m],LEN,1,fp)==1) m++

fclose(fp)

if(m==0) {printf("no record!n")return}

printf("please input the number:")

scanf("%d",&snum)

for(i=0i<mi++)

   if(snum==stu[i].num)

   { printf("find the student,show?(y/n)")

   scanf("%s",ch)

    if(strcmp(ch,"Y")==0||strcmp(ch,"y")==0)

      {

        printf("number  name           elective    experiment  required    sumtn")

        printf(FORMAT,DATA)

 break

   }

   }

if(i==m) printf("can not find the student!n")

}

void modify()

{ FILE *fp

int i,j,m=0,snum

if((fp=fopen("data.txt","r+"))==NULL)

   { printf("can not openn")return}

while(!feof(fp))

if(fread(&stu[m],LEN,1,fp)==1) m++

if(m==0) {printf("no record!n")

fclose(fp)

return

}

show()

printf("please input the number of the student which do you want to modify!n")

printf("modify number:")

scanf("%d",&snum)

for(i=0i<mi++)

 if(snum==stu[i].num)

 break

 printf("find the student!you can modify!n")

 printf("name:")

 scanf("%s",stu[i].name)

        printf("elective:")

 scanf("%lf",&stu[i].elec)

        printf("experiment:")

 scanf("%lf",&stu[i].expe)

        printf("required course:")

 scanf("%lf",&stu[i].requ)

 printf("modify successful!")

 stu[i].sum=stu[i].elec+stu[i].expe+stu[i].requ

 if((fp=fopen("data.txt","wb"))==NULL)

   { printf("can not openn")return}

 for(j=0j<mj++)

 if(fwrite(&stu[j] ,LEN,1,fp)!=1)

     { printf("can not save!")getch()}

fclose(fp)

}

void insert()

{ FILE *fp

int i,j,k,m=0,snum

if((fp=fopen("data.txt","r+"))==NULL)

   { printf("can not openn")return}

while(!feof(fp))

if(fread(&stu[m],LEN,1,fp)==1) m++

if(m==0) {printf("no record!n")

fclose(fp)

return

}

printf("please input position where do you want to insert!(input the number)n")

scanf("%d",&snum)

for(i=0i<mi++)

 if(snum==stu[i].num)

 break

 for(j=m-1j>ij--)

         stu[j+1]=stu[j]

 printf("now please input the new information.n")

        printf("number:")

 scanf("%d",&stu[i+1].num)

 for(k=0k<mk++)

   if(stu[k].num==stu[i+1].num)

   {

   printf("the number is existing,press any to continue!")

   getch()

   fclose(fp)

   return

   }

 printf("name:")

 scanf("%s",stu[i+1].name)

        printf("elective:")

 scanf("%lf",&stu[i+1].elec)

        printf("experiment:")

 scanf("%lf",&stu[i+1].expe)

        printf("required course:")

 scanf("%lf",&stu[i+1].requ)

 stu[i+1].sum=stu[i+1].elec+stu[i+1].expe+stu[i+1].requ

 if((fp=fopen("data.txt","wb"))==NULL)

   { printf("can not openn")return}

 for(k=0k<=mk++)

 if(fwrite(&stu[k] ,LEN,1,fp)!=1)

     { printf("can not save!")getch()}

fclose(fp)

}

void total()

{ FILE *fp

int m=0

if((fp=fopen("data.txt","r+"))==NULL)

   { printf("can not openn")return}

while(!feof(fp))

 if(fread(&stu[m],LEN,1,fp)==1)

 m++

if(m==0) {printf("no record!n")fclose(fp)return}

printf("the class are %d students!n",m)

fclose(fp)

}

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