教务处管理系统c语言编程

#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)

}

教务信息管理系统（C语言）

#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)

 }

学生成绩录入查询系统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<iostream>

#include<string.h>

using

namespace

std

struct

student

{

char

name[50]

int

score

}

void

teacherC(student

*stu)//老师录入成绩

{

int

i,n

cout<<"请输入需要录入的学生的个数n"

cin>>n

cout<<"请依次输入学生的姓名和成绩n"

for(i=0i<ni++)

{

cin>>stu[i].name>>stu[i].score

}

stu[i].score=-1

}

void

show(student

*stu)

{

int

i=0

for(i<100i++)

{

if(stu[i].score==-1)

break

cout<<stu[i].name<<"

"<<stu[i].score<<endl

}

}

int

search(student

*stu,char

*name)

{

int

i=0,k=-1

for(i<100i++)

{

if(stu[i].score==-1)

break

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

{

k=i

break

}

}

return

k

}

void

edit(student

*stu)

{

int

i=0,j=0

char

name[30],an

while(1)

{

cout<<"请输入需要修改的学生名字n"

cin>>name

i=search(stu,name)

if(i>=0)

{

cout<<"该学生的信息为:n"

cout<<stu[i].name<<"

"<<stu[i].score<<endl

cout<<"确定要修改该学生的信息是的输入Y不是输入N:n"

cin>>an

if(an=='Y'||an=='y')

{

cout<<"请输入修改后的姓名成绩:n"

cin>>stu[i].name>>stu[i].score

cout<<"修改成功n"

}

cout<<"继续修改请输入1退出输入0:n"

cin>>j

if(j==0)

break

}

else

cout<<"没有该学生的信息n"

}

}

void

dele(student

*stu)

{

int

i=0,j=0

char

name[30],an

while(1)

{

cout<<"请输入需要删除的学生名字n"

cin>>name

i=search(stu,name)

if(i>0)

{

cout<<"该学生的信息为:n"

cout<<stu[i].name<<"

"<<stu[i].score<<endl

cout<<"确定要删除该学生的信息是的输入Y不是输入N:n"

cin>>an

if(an=='Y'||an=='y')

{

*stu[i].name=0

cout<<"删除成功n"

}

cout<<"继续删除请输入1退出输入0:n"

cin>>j

if(j==0)

break

}

else

cout<<"没有该学生的信息n"

}

}

int

main()

{

int

i,n

char

name[30]

student

stu[100]//学生总数上限为100个

while(1)

{

cout<<"请做出以下的选择："<<endl

cout<<"输入

0

退出系统n"

cout<<"输入

1

教书录入成绩n"

cout<<"输入

2

学生查询成绩n"

cout<<"输入

3

修改学生成绩n"

cout<<"输入

4

删除学生成绩n"

cin>>i

switch(i)

{

case

1:

teacherC(stu)break

case

2:

cout<<"请输入查询的姓名n"

cin>>namen=search(stu,name)cout<<"该学生成绩是："<<stu[n].score<<endlbreak

case

3:

edit(stu)break

case

4:

dele(stu)break

default:if(i!=0)cout<<"请输入有效数字n"

}

if(i==0)

break

}

return

0

}

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