c語言學生選修課程系統_學生選課系統C語言程序

1. c語言編寫學生選課系統

#include<stdio.h>
#include<conio.h>
#include<string.h>
#include<stdlib.h>
//#include<iostream.h>
void clrscr(void)
{
system("cls");
}
char *getpass(char s[])
{
char *pass,ch;
int i;
pass=new char[100];
i=0;
pass[0]='\0';
printf("%s",s);
while(1)
{
ch=getch();
if(ch!=13)
{
printf("*");
pass[i]=ch;
i++;
pass[i]='\0';
}
else break;
}
//scanf("%s",pass);
return pass;
}
struct course
{
char name[20];
int score;
int students_limited;
course *pNext;
};

struct user
{
char name[20];
char password[17];
char coursename[20];
user *pNext;
};

int Login()
{
char key;

ST1:
clrscr();
printf("\n\n\n\n\n\n\n\t\t\tWelcome to Course System!");
printf("\n\n");
printf("\n\t\t\t1. Login with Administrator");
printf("\n\t\t\t2. Login with Users");
printf("\n\t\t\t0. Exit");
key=getch();

switch(key)
{
case '1' : return 1;
case '2' : return 2;
case '0' : return 0;
default : printf("\n\n\t\t\tInput wrong!\n\t\t\t\tPress any key to continue...");
getch();
goto ST1;
}
}

course *readcourse()
{
FILE *fp;
book *pHead,*pTemp,*pLast;

fp=fopen("coursemsg.dat","r");
if(fp==NULL)
{
printf("\n\n\t\t\tOpen course message file failed!");
return NULL;
}
pHead=NULL;
while(!feof(fp))
{
pTemp=new course;
if(fread(pTemp,sizeof(course),1,fp)!=1)
{
delete pTemp;
break;
}
if(pHead==NULL)
{
pHead=pTemp;
pLast=pTemp;
}
pLast->pNext=pTemp;
pTemp->pNext=NULL;
pLast=pTemp;
}//while
fclose(fp);
return pHead;
}

void writecoursetofile(course *pHead)
{
FILE *fp;
course *pTemp,*pNext;

fp=fopen("coursemsg.dat","w");
for(pTemp=pHead;pTemp;pTemp=pTemp->pNext)
fwrite(pTemp,sizeof(course),1,fp);
fclose(fp);
}

void Add_course()
{
course one,*p;
int i,j;
FILE *fp;

p=&one;
while(1)
{
clrscr();
printf("\n\n\n\n\n\n\n\n\t\tPlease input the name of course(-1 to end):");
//cin>>p->name;
scanf("%s",p->name);
if(!strcmp(p->name,"-1"))break;
i=0;
while(1)
{
if(p->name[i]=='\0')break;
else i++;
}
for(j=i;j<20;j++)p->name[j]='\0';
printf("\n\t\tInput it's scores:");
//cin>>p->score;
scanf("%d",&p->score);
fp=fopen("coursemsg.dat","a+");
fwrite(p,sizeof(course),1,fp);
fclose(fp);
printf("\n\n\t\tAdd course message OK!");
printf("\n\t\t\tPress any key to countinue...");
getch();
}
}

void Del_course()
{
course *pHead,*pNewHead,*pTemp,*pLast;
char name[20];

pHead=readcourse();
printf("\n\t\tPlease input the name of course to be delete:");
gets(name);

while(strcmp(pHead->name,name)==0)
{
pNewHead=pHead->pNext;
printf("\n\n\t\t--%s had been deleted" ,name);
delete pHead;
pHead=pNewHead;
}
for(pTemp=pHead,pLast=pHead;pTemp!=NULL;pLast=pTemp,pTemp=pTemp->pNext)
{
if(strcmp(pTemp->name,name)==0)
{
pLast->pNext=pTemp->pNext;
printf("\n\n\t\t--%s had been deleted" ,name);
delete pTemp;
pTemp=pLast;
}
}//for
writecoursetofile(pHead);
getch();
}

void course_Op()
{
char key;

ST3:
clrscr();
printf("\n\n\n\n\n\n\n\n\t\t\t\t1. Add Course");
printf("\n\t\t\t\t2. Delete Course");
printf("\n\t\t\t\t0. EXIT");
key=getch();
switch(key)
{
case '1' : Add_course();break;
case '2' : Del_course();break;
case '0' : goto _End;
default : printf("\n\tInput wrong!\n\tPress any key to continue...");
getch();
}
goto ST3;

_End:
;
}

void Add_user()
{
FILE *fp;
char name[20],*na,password[6],*pa;
int i,j;
user one,*p;

p=&one;
pa=password;
na=name;

while(1)
{
clrscr();
printf("\n\n\n\n\n\n\n\t\tPlease input user's name(-1 to end):");
gets(name);
if(!strcmp(name,"-1"))break;
pa=getpass("\n\t\tPlease input new password:");
strcpy(p->name,na);
strcpy(p->password,pa);
fp=fopen("usermsg.dat","ab+");
fwrite(p,sizeof(user),1,fp);
fclose(fp);
printf("\n\t\tuser's message has been saved!");
printf("\n\t\tPress any key to countinue...");
getch();
}
}
user *readcusmsg()
{
FILE *fp;
user *pHead,*pTemp,*pLast;

fp=fopen("usermsg.dat","rb");
if(fp==NULL)
{
printf("\n\nOpen user's message file failed");
return NULL;
}
pHead=NULL;

while(!feof(fp))
{
pTemp=new user;
if(fread(pTemp,sizeof(user),1,fp)!=1)
{
delete pTemp;
break;
}
if(pHead==NULL)
{
pHead=pTemp;
pLast=pTemp;
}
pLast->pNext=pTemp;
pTemp->pNext=NULL;
pLast=pTemp;
}//while
fclose(fp);
return pHead;
}

void writecusmsgtofile(user *pHead)
{
FILE *fp;
user *pTemp,*pNext;

fp=fopen("usermsg.dat","wb");
for(pTemp=pHead;pTemp;pTemp=pTemp->pNext)
fwrite(pTemp,sizeof(user),1,fp);
fclose(fp);
}

void user_Op()
{
char key;

ST4:
clrscr();
printf("\n\n\n\n\n\n\n\n\t\t\t\t1. Add Users");
printf("\n\t\t\t\t0. EXIT");
key=getch();

switch(key)
{
case '1' : Add_user();break;
case '0' : goto _End;
default : printf("\n\tInput wrong!\n\tPress any key to continue...");
getch();
}
goto ST4;

_End:;
}

void List_all_course()
{
course *pHead,*pTemp;
int Count=0,tense;

pHead=readcourse();
if(!pHead)
{
printf("\n\t(No data)");
exit(0);
}
printf("\n%30s%8s%10s","course name","Score","Tense");

for(pTemp=pHead;pTemp!=NULL;pTemp=pTemp->pNext)
{
if(pTemp->n>0)tense=1;
else tense=0;
printf("\n%30s%8d%10d",pTemp->name,pTemp->score,tense);
Count++;
if(Count%20==0){printf("Press any key to countinue...");getch();}
}
getch();
}

void Search_course_name()
{
char name[20];
int tense,k=1;
book *pHead,*pTemp,*pNext;

printf("\n\tPlease input the name of the course you want to search:");
gets(name);
pHead=readcourse();
for(pTemp=pHead;pTemp!=NULL;pTemp=pTemp->pNext)
if(!strcmp(pTemp->name,name))
{
if(pTemp->n>0)tense=1;
else tense=0;
k=0;
printf("\n%30s%8d%10d",pTemp->name,pTemp->score,tense);
}
if(k)
{
printf("\n\n\t\tThere's no course named %s",name);
printf("\n\t\t\tPress any key to countinue...");
}
getch();
}

void course_Search()
{
char key;

ST5:
clrscr();
printf("\n\n\n\n\n\n\t\t\t\t1. List all course");
printf("\n\t\t\t\t2. Search by the name of course");
printf("\n\t\t\t\t0. EXIT");
key=getch();

switch(key)
{
case '1' : List_all_course();break;
case '2' : Search_course_name();break;
case '0' : goto _End;
default : printf("\n\t\t\tInput wrong!\n\t\t\tPress any key to continue...");
getch();
}
goto ST5;

_End:;
}

void Pass(int Res)
{
FILE *fp;
char psw[17],*p,pass_in[17],user_name[20];
user *pHead,*pTemp;
int i,k=0;

clrscr();
p=pass;

if(Res==1)
{
if(!(fp=fopen("adm.psw","rb")))
{
printf("\n\n\n\n\n\n\n\t\tWelcome!\n\t******Login Administrator******");
p=getpass("\n\tPlease input your new password:");
fp=fopen("adm.psw","wb");
fprintf(fp,"%s",p);
fclose(fp);
}
else
{
fscanf(fp,"%s",pass_in);
fclose(fp);
printf("\n\n\n\n\n\n\t******Login by Administrator******");
p=getpass("\n\n\t\t\tPlease input your password:");
if(strcmp(p,pass_in))
{
printf("\n\t\tYour Password is wrong!");
printf("\n\t\tPress any key to EXIT...");
getch();
exit(0);
}//if_else
}
Adm_List();
}//if
else
{
printf("\n\n\n\n\n\n\n\n\t\t\t\tWelcome!");
printf("\n\t\t\t******Login by User******");
printf("\n\t\t\tPlease input your name:");
scanf("%s",user_name);
p=getpass("\n\t\t\tPlease input your password:");
pHead=reaser();
for(pTemp=pHead;pTemp!=NULL;pTemp=pTemp->pNext)
if(!strcmp(pTemp->name,user_name))
if(strcmp(pTemp->password,p))
{
k=1;
printf("\n\t\t\tYour password is wrong!");
printf("\n\t\t\t\tPress any key to EXIT...");
getch();
exit(0);
}//if_else
}//psw

int main()
{
int Res;

clrscr();
printf("\n\n\n\n\n\n\n\n");
printf("\n\t*****************************************************************");
printf("\n\t* courses System *");
printf("\n\t* *");
printf("\n\t* QiuYong No.20052419 *");
printf("\n\t* *");
printf("\n\t* 2006-7-20 *");
printf("\n\t*****************************************************************");
printf("\n\t\t\t\t\t\tPress any key to countinue...");
getch();

START:
Res=login();
if(Res==0)goto End;
else if(Res==3)Help();
else Psw(Res);
goto START;

End:
clrscr();
printf("\n\n\n\n\n\n\t\t\tGoodBye ^_^");
return 0;
}

2. C語言程序設計之學生選修課程管理系統。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>struct student
{
char name[60];
char ID[7];
int score;
};int dq(struct student st[]);
void xianshi();
void bc(struct student st[]);
void add();
void select();
void zz();
void chazhao();
void xhcz();
void xmcz();
void del();
void xmsc();
void xhsc();
void tj();
void px();
void bjg();
void xg();
void xhxg();
void xmxg();
void bca();
void fh();
struct student st[300]; //這個數組用來保存所有的學生信息和文件裡面的一致
int Number=0; //記錄總的學生人數也就是數組/文件裡面的學生人數
void main()
{
int choose=0;
FILE *fp=NULL;
char yesorno;

if((fp=fopen("C://student.dat","rb"))==NULL)
{
printf("\n=========>提示：文件不存在，是否要創建一個?(y/n)\n");
scanf("%c",&yesorno);
if(yesorno=='y'||yesorno=='Y')
{

//這里僅為了建立文件
fp=fopen("C://student.dat","wb");
fclose(fp);
}
else
exit(0);
}
else
{
Number=dq(st); //要是文件只能夠已經有數據將數據初始化到數組中
}
system("cls");
while(true)
{
xianshi();
printf("\t\t====>請選擇：");
scanf("%d",&choose);
system("cls");
switch(choose)
{
case 0: exit(0);
//退出
break;
case 1: add();
fh();//增加學生成績
break;
case 2: select();
fh();//查看學生成績
break;
case 3: chazhao();
fh();// 查找
break;
case 4: del();
fh();//刪除
break;
case 5: tj();
fh();//統計
break;
case 6: px();
fh();//排序
break;
case 7: bjg();
fh();//輸出不及格
break;
case 8: xg();
fh();//修改
break;
case 9:zz();
fh();//作者
break;
case 10:bca();
fh();//保存

break;
default:
break;
}
fflush(stdin);
getchar();
system("cls");
}
}
void bca()
{
printf("\t=====程序在運行時已自動保存.....\n");
}
void fh()
{
printf("\t===>按Enter鍵返回主菜單\n");
}
void xg() //修改學生信息
{
int way=0;
printf("請選擇修改查找方式\n");
printf("1 按姓名查找修改\n");
printf("2 按學號查找修改\n");
scanf("%d",&way);
switch(way)
{
case 1: xmxg();
break;
case 2: xhxg();
break;
default: printf("輸入有誤，結束!\n");
break;
}
}
//按姓名修改
void xmxg()
{
FILE *fp=NULL;
char name[60];
int i=0;
int changeIndex=0;
int index=0;
printf("請輸入要修改的學生姓名：");
scanf("%s",name);
for (i=0;i<Number;i++)
{
if (strcmp(name,st[i].name))
{
changeIndex=i; //保存要修改的人的下標
}
break;
}
printf("\t姓名\t學號\t成績\n");
printf("\t%s\t%s\t%d\n\n",st[changeIndex].name,st[changeIndex].ID,st[changeIndex].score);
printf("請重新輸入該學生信息");
printf("姓名：");
scanf("%s",st[changeIndex].name);
printf("學號：");
scanf("%s",st[changeIndex].ID);
printf("成績：");
scanf("%d",&st[changeIndex].score); //信息修改後重新更新文件裡面的數據以保持數據一致性
fp=fopen("C://student.dat","wb");
for (i=0;i<Number;i++)
{
fwrite(&st[i],sizeof(struct student),1,fp);
}
fclose(fp);
}
void xhxg()//按學號修改
{
FILE *fp=NULL;
char id[60];
int i=0;
int changeIndex=0;
int index=0;
printf("請輸入要修改的學生學號：");
scanf("%s",id);
for (i=0;i<Number;i++)
{
if (strcmp(id,st[i].ID))
{
changeIndex=i; //保存要修改的人的下標
}
break;
}
printf("\t姓名\t學號\t成績\n");
printf("\t%s\t%s\t%d\n\n",st[changeIndex].name,st[changeIndex].ID,st[changeIndex].score);
printf("請重新輸入該學生信息");
printf("姓名：");
scanf("%s",st[changeIndex].name);
printf("學號：");
scanf("%s",st[changeIndex].ID);
printf("成績：");
scanf("%d",&st[changeIndex].score);

//信息修改後重新更新文件裡面的數據以保持數據一致性
fp=fopen("C://student.dat","wb");
for (i=0;i<Number;i++)
{
fwrite(&st[i],sizeof(struct student),1,fp);
}
fclose(fp);
printf("\t=======>修改成功\n");
}void bjg() //輸出不及格人數
{
int i=0;
printf("以下是不及格:\n");
printf("\t姓名\t學號\t成績\n");
for (i=0;i<Number;i++)
{
if (st[i].score<60)
{
printf("\t%s\t%s\t%d\n",st[i].name,st[i].ID,st[i].score);
}
}
}
void px()//排序
{
struct student temp;
int wantNUmber=0;
int i=0;
int j=0;
for(i=0;i<Number-1;i++)
{
for(j=i;j<Number-1;j++)
{
if(st[j].score>st[j+1].score)
{
temp=st[j];
st[j]=st[j+1];
st[j+1]=temp;
}
}
}
printf("你想輸出前幾名的成績：");
scanf("%d",&wantNUmber);
if (wantNUmber>Number)
{
wantNUmber=Number;
} printf("\t姓名\t學號\t成績\n");
for(i=0;i<wantNUmber;i++)
{
printf("\t%s\t%s\t%d\n",st[i].name,st[i].ID,st[i].score);
}
}
void tj()//統計
{
int i=0;
double sum=0.0;
for(i=0;i<Number;i++)
{
sum+=st[i].score;
}
printf("全班總分為：%f\n",sum);
printf("平均分為：%f\n",sum/Number);
}
void del()//刪除
{
int n=0;
printf("1 按姓名刪除\n");
printf("2 按學號刪除\n");
scanf("%d",&n);
switch(n)
{
case 1: xmsc();
break;
case 2: xhsc();
break;
}
}
void xmsc()//按姓名刪除
{
FILE *fp=NULL;
char name[60];
int i=0;
int j=0;
printf("請輸入要刪除的學生姓名：");
scanf("%s",name);
for(i=0;i<Number;i++)
{
if (strcmp(name,st[i].name)==0) //如果查找到就刪除
{
for (j=i;j<Number-1;j++)
{
st[j]=st[j+1];
}
Number--;
}
} //將剩餘數據寫入文件重新一寫的方式打開文件把以前的數據擦除了
fp=fopen("C://student.dat","wb");
for (i=0;i<Number;i++)
{
fwrite(&st[i],sizeof(struct student),1,fp);
}
fclose(fp);
printf("刪除成功;\n");

}
void xhsc()//按學號刪除
{
FILE *fp=NULL;
char id[60];
int i=0;
int j=0;
printf("請輸入要刪除的學生學號：");
scanf("%s",id);
for(i=0;i<Number;i++)
{
if (strcmp(id,st[i].ID)==0) //如果查找到就刪除
{
for (j=i;j<Number-1;j++)
{
st[j]=st[j+1];
}
Number--;
}
}

//將剩餘數據寫入文件重新一寫的方式打開文件把以前的數據擦除了
fp=fopen("C://student.dat","wb");
for (i=0;i<Number;i++)
{
fwrite(&st[i],sizeof(struct student),1,fp);
}
fclose(fp);
printf("刪除成功;\n");
}
void chazhao()//查找學生
{
int n=0;
printf("1 按姓名查找\n");
printf("2 按學號查找\n");
scanf("%d",&n);
switch(n)
{
case 1: xmcz();
break;
case 2: xhcz();
break;
default: printf("輸入有誤，結束!\n");
break;
}
}
void xhcz()//按學號查找
{
char id[7];
int i=0;
printf("請輸入要查找學生學號:");
scanf("%s",id);
system("cls");
printf("\t姓名\t學號\t成績\n");
for (i=0;i<Number;i++)
{
if (strcmp(id,st[i].ID)==0)
{
printf("\t%s\t%s\t%d\n",st[i].name,st[i].ID,st[i].score);
}
}
}
void xmcz()//按姓名查找
{
char name[7];
int i=0;
printf("請輸入要查找學生姓名:");
scanf("%s",name);
system("cls");
printf("\t姓名\t學號\t成績\n");
for (i=0;i<Number;i++)
{
if (strcmp(name,st[i].name)==0)
{
printf("\t%s\t%s\t%d\n",st[i].name,st[i].ID,st[i].score);
}
}
}
void zz()
{
printf("\t**********************************************************\n\n");
printf("\t^^^^^^^^^^ 武漢工程大學郵電與信息工程學院 ^^^^^^^^^^\n\n");
printf("\t^^^^^^^^^ 07網路與安全管理2班 ^^^^^^^^^\n\n");
printf("\t^^^^^^^^ 易樊製作 ^^^^^^^^\n\n");
printf("\t^^^^^^^^^ 禁止CTRL+C 謝謝合作 ^^^^^^^^^\n\n");
printf("\t^^^^^^^^^^ QQ:895115828\n\n");
printf("\t**********************************************************\n\n");
}
void select()//查看學生
{
int i=0;
printf("以下是全部學生成績\n");
printf("\t姓名\t學號\t成績\n");
for(i=0;i<Number;i++)
{
printf("\t%s\t%s\t%d\n",st[i].name,st[i].ID,st[i].score);
}
}
void add()//增加學生
{
int numberTemp=0;
int i=0;
struct student temp; //臨時保存信息
printf("請輸入要增加學生成績個數：");
scanf("%d",&numberTemp);
for(i=0;i<numberTemp;i++)
{
printf("輸入第%d個同學信息\n",i+1);
printf("姓名：");
scanf("%s",temp.name);
printf("學號：");
scanf("%s",temp.ID);
printf("成績：");
scanf("%d",&temp.score);
st[Number++]=temp; //將剛添加的寫入到數組
bc(&temp); //將剛添加的寫入到文件 }
printf("添加成功\n");
}
void bc(struct student *st)
{
FILE *fp=NULL;
fp=fopen("C://student.dat","ab+");
fwrite(st,sizeof(struct student),1,fp);
fclose(fp);
}
int dq(struct student st[])
{
FILE *fp=NULL;
int i=0;
fp=fopen("C://student.dat","rb");
while(fread(&st[i],sizeof(struct student),1,fp))
i++;
fclose(fp);
return i;
}
void xianshi()
{
printf("\t*****************************************************************\n");
printf("\t* *\n");
printf("\t* 學生成績管理系統 *\n");
printf("\t* *\n");
printf("\t* [1] 增加學生成績 [2] 查看學生成績 *\n");
printf("\t* [3] 查找學生成績 [4] 刪除學生成績 *\n");
printf("\t* [5] 統計（總成績和平均分） [6] 輸出前N名學生成績 *\n");
printf("\t* [7] 輸出不及格人數 [8] 修改學生信息 *\n");
printf("\t* [9] 關於作者 [10] 保存數據 *\n");
printf("\t* [0] 退出系統 *\n");
printf("\t*****************************************************************\n");
}運行成功，請你下去後慢慢研究下這個程序，很簡單的，祝你成功！~

3. c語言學生選修課程管理系統

4. C語言設計,學生選修課程系統，高手指點下，不然掛科了，謝謝！

網上找的

#include "stdio.h"
#include "stdlib.h"
#include "string.h"
typedef struct subjects
{
int num;
char name[20];
char kind[10];
int stime;
int ttime;
int etime;
int score;
int term;
struct subjects *next;
}SUB;

SUB *create_form()
{
SUB *head,*tail,*p;
int num,stime,ttime;
int etime,score,term;
char name[20],kind[10];
int size=sizeof(SUB);
head=tail=NULL;
printf("輸入選修課程信息:\n");
scanf("%d%s%s%d%d%d%d%d",&num,name,kind,&stime,&ttime,&etime,&score,&term);
while(num!=0){
p=(SUB *)malloc(size);
p->num=num;
strcpy(p->name,name);
strcpy(p->kind,kind);
p->stime=stime;
p->ttime=ttime;
p->etime=etime;
p->score=score;
p->term=term;
if(head==NULL)
head=p;
else
tail->next=p;
tail=p;
scanf("%d%s%s%d%d%d%d%d",&num,name,kind,&stime,&ttime,&etime,&score,&term);
}
tail->next=NULL;
return head;
}

void savefile(SUB *head)
{
SUB *p;
FILE *fp;
fp=fopen("subjects.txt","w");
fprintf(fp,"課程編號課程名稱課程性質總學時授課學時實驗或上機學時學分開課學期\n");
for(p=head;p;p=p->next)
fprintf(fp,"%5d%12s%9s%9d%9d%11d%11d%7d\n",p->num,p->name,p->kind,p->stime,p->ttime,p->etime,p->score,p->term);
fclose(fp);
}

void savefileadd(SUB *head)
{
SUB *p;
FILE *fp;
fp=fopen("subjectsadd.txt","w");
fprintf(fp,"課程編號課程名稱課程性質總學時授課學時實驗或上機學時學分開課學期\n");
for(p=head;p;p=p->next)
fprintf(fp,"%5d%12s%9s%9d%9d%11d%11d%7d\n",p->num,p->name,p->kind,p->stime,p->ttime,p->etime,p->score,p->term);
fclose(fp);
}

void savefiledel(SUB *head)
{
SUB *p;
FILE *fp;
fp=fopen("subjectsdel.txt","w");
fprintf(fp,"課程編號課程名稱課程性質總學時授課學時實驗或上機學時學分開課學期\n");
for(p=head;p;p=p->next)
fprintf(fp,"%5d%12s%9s%9d%9d%11d%11d%7d\n",p->num,p->name,p->kind,p->stime,p->ttime,p->etime,p->score,p->term);
fclose(fp);
}

void prin(SUB *head)
{
SUB *ptr;
if(head==NULL){
printf("NO RECORDS!\n");
return;
}
printf("課程編號課程名稱課程性質總學時授課學時實踐或上機學時學分開課學期\n");
for(ptr=head;ptr;ptr=ptr->next)
printf("%5d%12s%9s%9d%9d%11d%11d%7d\n",ptr->num,ptr->name,ptr->kind,ptr->stime,ptr->ttime,ptr->etime,ptr->score,ptr->term);
}

void search(SUB *head)
{
int a,num;
int t=1;
char type[10];
char ch='a',ch1;
SUB *ptr;

while(ch!=' '){
printf("若要按課程性質查找請輸入1，若要按學分查找請輸入2:\n");
scanf("%d",&a);
switch(a){
case 1:printf("請輸入要查找的課程的性質:\n");
scanf("%s",type);
printf("課程編號課程名稱課程性質總學時授課學時實踐或上機學時學分開課學期\n");

5. 學生選課系統C語言程序

根據自己的需要，自己看著修改一下 ^^
#include<stdio.h>
#include<stdlib.h>
int N1,N2,kk1,kk2,kk3;
struct couse * head1;
struct student * head2;
struct couse//課程信息結構體
{
int num1;
char name1[20];
int score;
int nelepeo;//課程已選人數
int Melepeo;//課程人數上限
struct couse * next;
};
struct student//學生信息結構體
{
int num2;
char name2[20];
int nelenum[50];//已選課程編號
int nelen;//已選課程數量
struct student * next;
};
void Ms()
{
for(kk1=0;kk1<1100;kk1++)
for(kk2=0;kk2<1200;kk2++)
for(kk3=0;kk3<1200;kk3++);
}
void keyboardc()//錄入課程子函數(從鍵盤錄入)
{
struct couse *p1,*p2;
N1=0;
p1=p2=(struct couse*)malloc(sizeof(struct couse));
printf("課程編號\t課程名稱\t學分\t課程人數上限\n");
scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);
p1->nelepeo=0;
head1=NULL;
while(p1->num1!=0)
{
N1=N1+1;
if(N1==1)head1=p1;
else p2->next=p1;
p2=p1;
p1=(struct couse * )malloc(sizeof(struct couse));
scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);
p1->nelepeo=0;
}
p2->next=NULL;
}
void filec()//錄入鍵盤子函數(從文件錄入)
{
FILE * fp;
char filepath[20];
struct couse *p1,*p2;
N1=0;
printf("輸入要讀入的文件路徑:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"r"))==NULL)
{
printf("找不到%s文件!\n",filepath);
exit(0);
}
p1=p2=(struct couse*)malloc(sizeof(struct couse));
fscanf(fp,"%d%s%d%d%d",&p1->num1,p1->name1,&p1->score,&p1->nelepeo,&p1->Melepeo);
head1=NULL;
while(!feof(fp))
{
N1=N1+1;
if(N1==1)head1=p1;
else p2->next=p1;
p2=p1;
p1=(struct couse * )malloc(sizeof(struct couse));
fscanf(fp,"%d%s%d%d%d",&p1->num1,p1->name1,&p1->score,&p1->nelepeo,&p1->Melepeo);
}
p2->next=NULL;
}
void inputc()//錄入課程主函數
{
int i;
printf("\t\t\t錄入課程信息\n");
printf("\n1.從鍵盤錄入\n");
printf("2.從文件錄入\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):keyboardc();break;
case(2):filec();break;
case(3):break;
}
}
void insertc(struct couse *incouse)//課程管理子函數(增加課程)
{
struct couse *p0,*p1,*p2;
p1=head1;
p0=incouse;
if(head1==NULL)
{
head1=p0;
p0->next=NULL;
}
else
{
while((p0->num1 > p1->num1) && (p1->next!=NULL))
{
p2=p1;
p1=p1->next;
}
if(p0->num1 <= p1->num1)
{
if(head1==p1) head1=p0;
else p2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=NULL;
}
}
N1=N1+1;
}
void delc(int num1)//課程管理子函數(刪除課程)
{
struct couse *p1,*p2;
if(head1==NULL)
{
printf("\n沒有課程,無法刪除!\n");
goto end;
}
p1=head1;
while(num1!=p1->num1 && p1->next!=NULL)
{
p2=p1;
p1=p1->next;
}
if(num1==p1->num1)
{
if(p1==head1) head1=p1->next;
else p2->next=p1->next;
printf("已刪除該編號課程!\n");
N1=N1-1;
}
else printf("無該編號的課程!\n");
end:;
}
void managementc()//課程管理主函數
{
struct couse * incouse;
int i,num1;
printf("\t\t\t課程管理\n");
printf("1.新增課程\n");
printf("2.刪除課程\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):
{
incouse=(struct couse *)malloc(sizeof(struct couse));
printf("課程編號\t課程名稱\t學分\t課程人數上限\n");
scanf("%d%s%d%d",&incouse->num1,incouse->name1,&incouse->score,&incouse->Melepeo);
incouse->nelepeo=0;
insertc(incouse);
break;
}
case(2):
{
printf("請輸入要刪除課程的編號:\n");
scanf("%d",&num1);
delc(num1);
break;
}
case(3):break;
}
}
void keyboards()//錄入學生信息子函數（從鍵盤錄入）
{
int i;
struct student *p1,*p2;
N2=0;
p1=p2=(struct student *)malloc(sizeof(struct student));
printf("學生學號\t學生姓名\n");
scanf("%d%s",&p1->num2,p1->name2);
p1->nelen=0;
for(i=0;i<20;i++) p1->nelenum[i]=0;
head2=NULL;
while(p1->num2!=0)
{
N2=N2+1;
if(N2==1)head2=p1;
else p2->next=p1;
p2=p1;
p1=(struct student * )malloc(sizeof(struct student));
scanf("%d%s",&p1->num2,p1->name2);
p1->nelen=0;
for(i=0;i<20;i++) p1->nelenum[i]=0;
}
p2->next=NULL;
}
void files()//錄入學生信息子函數（從文件錄入）
{
int i=0;
FILE * fp;
char filepath[20];
struct student *p1,*p2;
N2=0;
printf("輸入要讀入的文件路徑:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"r"))==NULL)
{
printf("找不到%s文件!\n",filepath);
exit(0);
}
p1=p2=(struct student*)malloc(sizeof(struct student));
fread(p1,sizeof(struct student),1,fp);
head2=NULL;
while(!feof(fp))
{
i=0;
N2=N2+1;
if(N2==1)head2=p1;
else p2->next=p1;
p2=p1;
p1=(struct student * )malloc(sizeof(struct student));
fread(p1,sizeof(struct student),1,fp);
}
p2->next=NULL;
}
void inputs()//錄入學生信息主函數
{
int i;
printf("\t\t\t錄入學生信息\n");
printf("\n1.從鍵盤錄入\n");
printf("2.從文件錄入\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):keyboards();break;
case(2):files();break;
case(3):break;
}
}
void inserts(struct student * incouse)//學生信息管理子函數(填加學生信息)
{
struct student *p0,*p1,*p2;
p1=head2;
p0=incouse;
if(head2==NULL)
{
head2=p0;
p0->next=NULL;
}
else
{
while((p0->num2 > p1->num2) && (p1->next!=NULL))
{
p2=p1;
p1=p1->next;
}
if(p0->num2 <= p1->num2)
{
if(head2==p1) head2=p0;
else p2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=NULL;
}
}
N2=N2+1;
}
void dels(int num2)//學生信息管理子函數（刪除學生信息)
{
struct student *p1,*p2;
if(head2==NULL)
{
printf("\n沒有該學生信息,無法刪除!\n");
goto end;
}
p1=head2;
while(num2!=p1->num2 && p1->next!=NULL)
{
p2=p1;
p1=p1->next;
}
if(num2==p1->num2)
{
if(p1==head2) head2=p1->next;
else p2->next=p1->next;
printf("已刪除該學生信息!\n");
N2=N2-1;
}
else printf("無該學號的學生!\n");
end:;
}
void managements()//學生信息管理主函數
{
struct student * incouse;
int i,num2;
printf("\t\t\t學生信息管理\n");
printf("1.新增學生信息\n");
printf("2.刪除學生信息\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):
{
incouse=(struct student *)malloc(sizeof(struct student));
incouse->nelen=0;
incouse->nelenum[0]=0;
printf("學生學號\t學生姓名\n");
scanf("%d%s",&incouse->num2,incouse->name2);
inserts(incouse);
break;
}
case(2):
{
printf("請輸入要刪除學生的學號:\n");
scanf("%d",&num2);
dels(num2);
break;
}
case(3):break;
}
}
void elect(struct student * s)//選課
{
struct couse * p;
int num1,i;
printf("請輸入要選課的編號:\n");
scanf("%d",&num1);
for(i=0;s->nelenum[i]!=0;i++);
s->nelenum[i]=num1;
(s->nelen)++;
p=head1;
while(p->num1!=num1) p=p->next;
(p->nelepeo)++;
}
void cheak()//學生選課子函數(查詢可選課程)
{
char e;
struct couse * c;
struct student * s;
int num2,i,j=0,t=0;
printf("請輸入你的學號:");
scanf("%d",&num2);
s=head2;
while(s->num2!=num2 && s->next!=NULL) s=s->next;
if(s->num2!=num2)
{
printf("不存在你的信息,請進入主菜單錄入你的信息!\n");
goto end;
}
c=head1;
printf("你的可選課程編號:\n");
while(c!=NULL)
{
for(t=0,i=0;s->nelenum[i]!=0;i++)
{
if(c->num1==s->nelenum[i]) t=1;
}
if(t==0 && (c->nelepeo!=c->Melepeo))
{
printf("%d\n",c->num1);
j++;
}
c=c->next;
}
if(j==0)
{
printf("你已選完所有課程，無法再多選!\n");
goto end;
}
printf("選課(y/n)?:\n");
getchar();
e=getchar();
i=0;
while(e=='y')
{
elect(s);
printf("繼續選課(y/n)?:\n");
getchar();
e=getchar();
}
end:;
}
void back(struct student * p)//退課
{
struct couse * p1;
int num1,i,j;
printf("請輸入你要退掉的課程編號:\n");
scanf("%d",&num1);
p1=head1;
while(p1->num1!=num1) p1=p1->next;
for(i=0;p->nelenum[i]!=num1;i++);
for(j=i;p->nelenum[j]!=0;j++) p->nelenum[j]=p->nelenum[j+1];
p->nelenum[--j]=0;
(p1->nelepeo)--;
printf("退課成功!\n");
}
void hcheak()//學生選課子函數（查詢已選課程)
{
char c;
struct couse * p0;
struct student * p;
int num2,i,f=0;
printf("請輸入學號:\n");
scanf("%d",&num2);
p=head2;
while(p->num2!=num2 && p!=NULL) p=p->next;
if(p==NULL)
{
printf("不存在你的信息,請回主菜單錄入信息:\n");
goto end;
}
printf("已選課程編號:\n");
if(p->nelenum[0]==0)
{
printf("你還沒選課!\n");
goto end;
}
for(i=0;p->nelenum[i]!=0;i++)
{
printf("%d\n",p->nelenum[i]);
p0=head1;
while(p0->num1!=p->nelenum[i]) p0=p0->next;
f=f+p0->score;
}
printf("總學分:%d\n",f);
printf("是否進行退課(y/n)?");
getchar();
c=getchar();
while(c=='y')
{
back(p);
printf("繼續退課(y/n)?");
getchar();
c=getchar();
(p->nelen)--;
}
end:;
}
void elective()//學生選課主函數
{
int i;
printf("\t\t\t學生選課\n");
printf("1.查詢可選課程\n");
printf("2.查詢已選課程\n");
printf("3.返回主菜單\n");
printf("請輸入(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):cheak();break;
case(2):hcheak();break;
case(3):break;
}
}
void listc()//輸出課程信息
{
struct couse * p;
p=head1;
printf("課程編號課程名稱學分課程已選人數課程人數上限\n");
while(p!=NULL)
{
printf("%-8d%10s%6d%8d%12d\n",p->num1,p->name1,p->score,p->nelepeo,p->Melepeo);
p=p->next;
}
}
void lists()//輸出學生信息
{
struct student * p;
p=head2;
printf("學生學號學生姓名已選課程數量\n");
while(p!=NULL)
{
printf("%-4d %10s %6d\n",p->num2,p->name2,p->nelen);
p=p->next;
}
}
void intoc()//存儲課程信息
{
FILE * fp;
struct couse * p;
char filepath[30];
printf("輸入課程信息要保存的文件路徑:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失敗!");
exit(0);
}
p=head1;
while(p!=NULL)
{
fprintf(fp,"%d %s %d %d %d\n",p->num1,p->name1,p->score,p->nelepeo,p->Melepeo);
p=p->next;
}
fclose(fp);
printf("課程信息已保存在%s中!\n",filepath);
}
void intos()//存儲學生信息
{
FILE * fp;
struct student * p;
char filepath[30];
printf("輸入學生信息要保存的文件路徑:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失敗!");
exit(0);
}
p=head2;
while(p!=NULL)
{
fwrite(p,sizeof(struct student),1,fp);
p=p->next;
}
fclose(fp);
printf("學生信息已保存在%s中!\n",filepath);
}
void into()//存儲信息
{
int i;
printf("1.存儲課程信息\n");
printf("2.存儲學生信息\n");
printf("3.返回主菜單\n");
printf("請輸入(1~3)\n");
scanf("%d",&i);
switch(i)
{
case(1):intoc();break;
case(2):intos();break;
case(3):break;
}
}
void store()//信息主函數
{
int i;
printf("\t\t系統信息查看及存儲\n");
printf("1.查看課程信息\n");
printf("2.查看學生信息\n");
printf("3.存儲信息\n");
printf("4.返回主菜單\n");
printf("請輸入(1~4):\n");
scanf("%d",&i);
switch(i)
{
case(1):listc();break;
case(2):lists();break;
case(3):into();break;
case(4):break;
}
}
int main()//主函數
{
int i;
start:
printf("\n\t\t\t歡迎使用學生選課系統!\n");
printf("菜單:\n");
printf("1.錄入課程信息\n");
printf("2.課程管理\n");
printf("3.錄入學生信息\n");
printf("4.學生信息管理\n");
printf("5.學生選課\n");
printf("6.系統信息查看及存儲\n");
printf("7.退出系統\n");
printf("\n請輸入菜單選項(1~7):\n");
scanf("%d",&i);
if(i<1 || i>7)
{
printf("輸入錯誤,請重輸:\n");
goto start;
}
switch(i)
{
case(1):
{
system("cls");
inputc();
goto start;
break;
}
case(2):
{
system("cls");
managementc();
goto start;
break;
}
case(3):
{
system("cls");
inputs();
goto start;
break;
}
case(4):
{
system("cls");
managements();
goto start;
break;
}
case(5):
{
system("cls");
elective();
goto start;
break;
}
case(6):
{
system("cls");
store();
goto start;
break;
}
case(7):
{
system("cls");
printf("感謝使用本系統!\n\n再見!\n");
}
}
return(0);
}

6. C語言學生選修課系統

//7《學生選修課程系統》設計任務
//（1）輸入功能：輸入30名學生學號、班級、姓名、選修課名稱。
//（2）設置要求：每個學生至少選修3科，總選修科目至少設置15科。
//（3）查詢功能：按學號、姓名、選修課顯示各選修課上課時間和地點。

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<malloc.h>
typedef struct subjects
{
int num;
char na[10];
char teacher[20];
char wtime[10];
char ttime[10];
int score;
struct subjects *next;
}SUB;
SUB *create_form()
{
SUB *head,*tail,*p;
int num,score;
char na[10],teacher[20],wtime[10],ttime[10];
head=tail=NULL;
printf(" 輸入選課程信息，以6個0結束：\n");
printf(" 課程代碼課名任教老師上課星期上課時間學分\n");
scanf("%d%10s%14s%10s%8s%6d",&num,&na,&teacher,&wtime,&ttime,&score);
while(num!=0)
{
p=(SUB*)malloc(sizeof(SUB));
p->num;
strcpy(p->na,na);
strcpy(p->teacher,teacher);
strcpy(p->wtime,wtime);
strcpy(p->ttime,ttime);
p->score=score;
if(head==NULL)
head=p;
else
tail->next=p;
tail=p;
scanf("%d%s%s%s%s%d",&num,&na,&teacher,&wtime,&ttime,&score);
}
tail->next=NULL;
return head;
}
void savefile(SUB*head)
{
SUB *p;
FILE *fp;
fp=fopen("subjects.txt","w");
fprintf(fp,"歡迎進入東華理工大學2008-2009學年選修課系統（4-13）\n");
fprintf(fp,"課程代碼課名任教老師上課星期上課時間學分\n");
for(p=head;p;p->next)
fprintf(fp,"%6d%10s%14s%10s%8s%6d",p->num,p->na,p->teacher,p->wtime,p->ttime,p->score);
fclose(fp);
}
void prin(SUB *head)
{
SUB *p;
if (head==NULL)
{
printf("沒有選修課程記錄！\n");
return;
}
printf("歡迎進入東華理工大學2008-2009學年選修課系統（4-13）\n");
printf("課程代碼課名任教老師上課星期上課時間學分\n");
for(p=head;p;p->next)
printf("%6d%10s%16s%12s%12s%d",p->num,p->na,p->teacher,p->wtime,p->ttime,p->score);
}
SUB *inset(SUB *head)
{
SUB *ptr,*ptr2,*subj;
char ch, ch1;
printf("是否進行插入課程，如果需要插入請按回車建，不進行按空格結束！\n");
ch=getchar();
while(ch!=' '){
subj=(SUB*)malloc(sizeof(SUB));
ptr=subj;
printf(" 輸入要插入的課程信息：\n");
scanf("%d%s%s%s%s%d",subj->num,subj->na,subj->teacher,subj->wtime,subj->ttime,subj->score);
if(head==NULL){
head=ptr;
head->next=NULL;
}
else{
for(ptr2=head;ptr2;ptr2=ptr2->next)
if(ptr2->next==NULL){
ptr2->next=subj;
subj->next=NULL;
break;
}
ch='a';
}
printf("繼續請按回車建，結束請按空格：\n");
ch1=getchar();
ch=getchar();
}
return head;
}
SUB *del(SUB *head)
{
SUB*p1,*p2;
char ch,ch1;
int num;
printf("是否進行課程刪除，要刪除請按回車鍵，不進行請按空格：\n");
ch=getchar();
while(ch!=' ')
{
printf("輸入要刪除的課程代碼：\n");
scanf("%d",&num);
if(head->num==num){
p2=head;
head=head->next;
free(p2);
}
if(head==NULL)
return NULL;
p1=head;
p2=head->next;
while(p2!=NULL){
if(p2->num==num){
p1->next=p2->next;
free(p2);
}
else
p1=p2;
p2=p1->next;
}
printf("繼續刪除請按回車鍵，結束請按空格：\n");
ch1=getchar();
ch=getchar();
}
return head;
}
typedef struct student
{
int number;
int classes;
char chinesename[16];
char title [5][12];
struct student *other;
}STU;
void scanf_form(SUB *head)
{
int i,count,number,classes;
char ch,title[3][12],chinesename[16];
scanf("%d%d%16s",&number,&classes,&chinesename);
for(i=0;i<5;i++)
{
scanf("%s",&title[i]);
count++;
if(count==3)
{
ch=getchar();
if(ch!=' ')
{title[3][12]='0';
title[4][12]='0';
i=5;
ch='a';
}
}
if(count==4)
{
ch=getchar();
if(ch!=' ')
{title[4][12]='0';
i=5;
ch='a';
}
}
for(i=0;i<5;i++)
{
if(strcmp(title[i][12],head->na)!=0 && title[i][12]!='0')
{ printf("你輸入的課程名不正確，請從新輸入：\n");
scanf_form();
}
}
}
}
STU *study_form(SUB*head)
{
STU *hand,*tall,*q;
int i;
char ch,ch1;
hand=tall=NULL;
printf("輸入你個人信息，及選修的課名，以4個0結束：\n");
printf("註：每個學生至少選修3門課，大於3門時按回車鍵繼續，空格結束：\n");
scanf_form();
while(number!=0)
{
q=(STU*)malloc(sizeof(STU));
q->number=number;
q->classes=classes;
strcpy(p->chinesename,chinesename);
for(i=0;i<5;i++)
strcpy(p->title[i],title[i][12]);
if(hand=NULL)
hand=q;
else
tall->other=q;
tall=q;
scanf_form();
for(i=0;i<5;i++)
{
if(strcmp(title[i][12],head->na)!=0&&titli[i][12]!='0')
{ printf("你輸入的課程名不正確，請從新輸入：\n");
scanf_form();
}
}
tall->other=NULL;
return hand;
}
}
void savefiles(STU*hand)
{
STU *q;
FILE *fq;
fq=fopen("studennt.txt","w");
fprintf(fq, "學生選課信息表：\n");
for(q=hand;q;q=q->other)
fprintf(fq,"%16d%10d%16s%16s%16s%16s%16s%16s",q->number,q->classes,q->chinesename,q->title[0],q->title[1],q->title[2],q->title[3],q->title[4]);
fclose(fq);
}
void prins(STU*hand)
{
STU *q;
if(head==NULL)
{
printf("沒有學生選課信息記錄！\n");
return;
}
printf("學生選課信息一覽表：\n");
printf("學號班級姓名課名：\n");
for(q=hand;q;q->number)
printf("%16d%10d%16s%16s%16s%16s%16s%16s",q->number,q->classes,q->chinesename,q->title[0],q->title[1],q->title[2],q->title[3],q->title[4]);
}
STU *intserts(SUB*head,STU *hand)
{
STU *prt,*prt2,*stuj;
int i;
char ch,ch1;
printf("是否要進行插入學生選課信息，如果需要請按回車建，結束請按0：\n");
ch=getchar();
while(ch!=' ')
{
stuj=(STU*)malloc(sizeof(STU));
prt=stuj;
printf("輸入要插入的學生選課信息：\n");
scanf_form();
if(hand==NULL)
{hand=prt;
hand->other=NULL;
}
else
{for(prt2=hand;prt2;prt2=prt2->other)
if(prt2->other==NULL)
{prt2->other=stuj;
stuj->other=NULL;
break;
}
ch='a';
}
printf("繼續插入請按回車建，結束請按空格：\n");
ch1=getchar();
ch=getchar();
}
return hand;
}
STU *dells(STU *hand)
{
STU *q1,*q2;
char ch,ch1;
int number;
printf("是否進行學生選課信息刪除，要刪除請按回車建，不進行請按空格：\n");
ch=getchar();
while(ch!=' ')
{
printf("輸入要刪除的學號：\n");
scanf("%d",&number);
if(hand->number==number)
{
q2=hand;
hand=hand->other;
free(q2);
}
if(hand=NULL)
return NULL;
q1=hand;
q2=hand->other;
while(q2)
{if(q2->number==number)
{q1->other=q2->other;
free(q2);
}
else
q1=q2;
q2=q1->other;
}
printf("繼續刪除請按回車建，結束請按空格：\n");
ch1=getchar();
ch1=getchar();
}
return hand;
}
void search(STU*hand)
{
int a,number;
int t=1;
char type[10],ch,ch1;
STU *prt;
printf("是否進入查詢，按回車鍵進入，空格結束:\n");
ch=getchar();
while(ch!=' ')
{
printf("請輸入要查詢的學號：\n");
for(prt=hand;prt;prt=prt->other)
{
if(number=prt->number)
{printf("%16d%10d%16s%16s%16s%16s%16s%16s",prt->number,prt->classes,prt->chinesename,prt->title[0],prt->title[1],prt->title[2],prt->title[3],prt->title[4]);
t=0;
}
if(t!=0)
printf("未找到！\n");
t=1;
}
printf("繼續查找請按回車鍵，結束請按空格鍵：\n");
ch1=getchar();
ch=getchar();
}
}
void main()
{
SUB *head=create_form() ;
savefile(head);
prin(head);
head= inset(head);
head= del(head);
STU *hand=study_form(head);
savefiles(hand);
prins(hand);
hand=intserts(head,hand);
hand=dells(hand);
search(hand);
}

7. 用C語言寫一個學生選課系統

#include<stdio.h>
#include<stdlib.h>
int N1,N2,kk1,kk2,kk3;
struct couse * head1;
struct student * head2;
struct couse//課程信息結構體
{
int num1;
char name1[20];
int score;
int nelepeo;//課程已選人數
int Melepeo;//課程人數上限
struct couse * next;
};
struct student//學生信息結構體
{
int num2;
char name2[20];
int nelenum[50];//已選課程編號
int nelen;//已選課程數量
struct student * next;
};
void Ms()
{
for(kk1=0;kk1<1100;kk1++)
for(kk2=0;kk2<1200;kk2++)
for(kk3=0;kk3<1200;kk3++);
}
void keyboardc()//錄入課程子函數(從鍵盤錄入)
{
struct couse *p1,*p2;
N1=0;
p1=p2=(struct couse*)malloc(sizeof(struct couse));
printf("課程編號\t課程名稱\t學分\t課程人數上限\n");
scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);
p1->nelepeo=0;
head1=NULL;
while(p1->num1!=0)
{
N1=N1+1;
if(N1==1)head1=p1;
else p2->next=p1;
p2=p1;
p1=(struct couse * )malloc(sizeof(struct couse));
scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);
p1->nelepeo=0;
}
p2->next=NULL;
}
void filec()//錄入鍵盤子函數(從文件錄入)
{
FILE * fp;
char filepath[20];
struct couse *p1,*p2;
N1=0;
printf("輸入要讀入的文件路徑:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"r"))==NULL)
{
printf("找不到%s文件!\n",filepath);
exit(0);
}
p1=p2=(struct couse*)malloc(sizeof(struct couse));
fscanf(fp,"%d%s%d%d%d",&p1->num1,p1->name1,&p1->score,&p1->nelepeo,&p1->Melepeo);
head1=NULL;
while(!feof(fp))
{
N1=N1+1;
if(N1==1)head1=p1;
else p2->next=p1;
p2=p1;
p1=(struct couse * )malloc(sizeof(struct couse));
fscanf(fp,"%d%s%d%d%d",&p1->num1,p1->name1,&p1->score,&p1->nelepeo,&p1->Melepeo);
}
p2->next=NULL;
}
void inputc()//錄入課程主函數
{
int i;
printf("\t\t\t錄入課程信息\n");
printf("\n1.從鍵盤錄入\n");
printf("2.從文件錄入\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):keyboardc();break;
case(2):filec();break;
case(3):break;
}
}
void insertc(struct couse *incouse)//課程管理子函數(增加課程)
{
struct couse *p0,*p1,*p2;
p1=head1;
p0=incouse;
if(head1==NULL)
{
head1=p0;
p0->next=NULL;
}
else
{
while((p0->num1 > p1->num1) && (p1->next!=NULL))
{
p2=p1;
p1=p1->next;
}
if(p0->num1 <= p1->num1)
{
if(head1==p1) head1=p0;
else p2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=NULL;
}
}
N1=N1+1;
}
void delc(int num1)//課程管理子函數(刪除課程)
{
struct couse *p1,*p2;
if(head1==NULL)
{
printf("\n沒有課程,無法刪除!\n");
goto end;
}
p1=head1;
while(num1!=p1->num1 && p1->next!=NULL)
{
p2=p1;
p1=p1->next;
}
if(num1==p1->num1)
{
if(p1==head1) head1=p1->next;
else p2->next=p1->next;
printf("已刪除該編號課程!\n");
N1=N1-1;
}
else printf("無該編號的課程!\n");
end:;
}
void managementc()//課程管理主函數
{
struct couse * incouse;
int i,num1;
printf("\t\t\t課程管理\n");
printf("1.新增課程\n");
printf("2.刪除課程\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):
{
incouse=(struct couse *)malloc(sizeof(struct couse));
printf("課程編號\t課程名稱\t學分\t課程人數上限\n");
scanf("%d%s%d%d",&incouse->num1,incouse->name1,&incouse->score,&incouse->Melepeo);
incouse->nelepeo=0;
insertc(incouse);
break;
}
case(2):
{
printf("請輸入要刪除課程的編號:\n");
scanf("%d",&num1);
delc(num1);
break;
}
case(3):break;
}
}
void keyboards()//錄入學生信息子函數（從鍵盤錄入）
{
int i;
struct student *p1,*p2;
N2=0;
p1=p2=(struct student *)malloc(sizeof(struct student));
printf("學生學號\t學生姓名\n");
scanf("%d%s",&p1->num2,p1->name2);
p1->nelen=0;
for(i=0;i<20;i++) p1->nelenum[i]=0;
head2=NULL;
while(p1->num2!=0)
{
N2=N2+1;
if(N2==1)head2=p1;
else p2->next=p1;
p2=p1;
p1=(struct student * )malloc(sizeof(struct student));
scanf("%d%s",&p1->num2,p1->name2);
p1->nelen=0;
for(i=0;i<20;i++) p1->nelenum[i]=0;
}
p2->next=NULL;
}
void files()//錄入學生信息子函數（從文件錄入）
{
int i=0;
FILE * fp;
char filepath[20];
struct student *p1,*p2;
N2=0;
printf("輸入要讀入的文件路徑:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"r"))==NULL)
{
printf("找不到%s文件!\n",filepath);
exit(0);
}
p1=p2=(struct student*)malloc(sizeof(struct student));
fread(p1,sizeof(struct student),1,fp);
head2=NULL;
while(!feof(fp))
{
i=0;
N2=N2+1;
if(N2==1)head2=p1;
else p2->next=p1;
p2=p1;
p1=(struct student * )malloc(sizeof(struct student));
fread(p1,sizeof(struct student),1,fp);
}
p2->next=NULL;
}
void inputs()//錄入學生信息主函數
{
int i;
printf("\t\t\t錄入學生信息\n");
printf("\n1.從鍵盤錄入\n");
printf("2.從文件錄入\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):keyboards();break;
case(2):files();break;
case(3):break;
}
}
void inserts(struct student * incouse)//學生信息管理子函數(填加學生信息)
{
struct student *p0,*p1,*p2;
p1=head2;
p0=incouse;
if(head2==NULL)
{
head2=p0;
p0->next=NULL;
}
else
{
while((p0->num2 > p1->num2) && (p1->next!=NULL))
{
p2=p1;
p1=p1->next;
}
if(p0->num2 <= p1->num2)
{
if(head2==p1) head2=p0;
else p2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=NULL;
}
}
N2=N2+1;
}
void dels(int num2)//學生信息管理子函數（刪除學生信息)
{
struct student *p1,*p2;
if(head2==NULL)
{
printf("\n沒有該學生信息,無法刪除!\n");
goto end;
}
p1=head2;
while(num2!=p1->num2 && p1->next!=NULL)
{
p2=p1;
p1=p1->next;
}
if(num2==p1->num2)
{
if(p1==head2) head2=p1->next;
else p2->next=p1->next;
printf("已刪除該學生信息!\n");
N2=N2-1;
}
else printf("無該學號的學生!\n");
end:;
}
void managements()//學生信息管理主函數
{
struct student * incouse;
int i,num2;
printf("\t\t\t學生信息管理\n");
printf("1.新增學生信息\n");
printf("2.刪除學生信息\n");
printf("3.返回主菜單\n");
printf("請選擇(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):
{
incouse=(struct student *)malloc(sizeof(struct student));
incouse->nelen=0;
incouse->nelenum[0]=0;
printf("學生學號\t學生姓名\n");
scanf("%d%s",&incouse->num2,incouse->name2);
inserts(incouse);
break;
}
case(2):
{
printf("請輸入要刪除學生的學號:\n");
scanf("%d",&num2);
dels(num2);
break;
}
case(3):break;
}
}
void elect(struct student * s)//選課
{
struct couse * p;
int num1,i;
printf("請輸入要選課的編號:\n");
scanf("%d",&num1);
for(i=0;s->nelenum[i]!=0;i++);
s->nelenum[i]=num1;
(s->nelen)++;
p=head1;
while(p->num1!=num1) p=p->next;
(p->nelepeo)++;
}
void cheak()//學生選課子函數(查詢可選課程)
{
char e;
struct couse * c;
struct student * s;
int num2,i,j=0,t=0;
printf("請輸入你的學號:");
scanf("%d",&num2);
s=head2;
while(s->num2!=num2 && s->next!=NULL) s=s->next;
if(s->num2!=num2)
{
printf("不存在你的信息,請進入主菜單錄入你的信息!\n");
goto end;
}
c=head1;
printf("你的可選課程編號:\n");
while(c!=NULL)
{
for(t=0,i=0;s->nelenum[i]!=0;i++)
{
if(c->num1==s->nelenum[i]) t=1;
}
if(t==0 && (c->nelepeo!=c->Melepeo))
{
printf("%d\n",c->num1);
j++;
}
c=c->next;
}
if(j==0)
{
printf("你已選完所有課程，無法再多選!\n");
goto end;
}
printf("選課(y/n)?:\n");
getchar();
e=getchar();
i=0;
while(e=='y')
{
elect(s);
printf("繼續選課(y/n)?:\n");
getchar();
e=getchar();
}
end:;
}
void back(struct student * p)//退課
{
struct couse * p1;
int num1,i,j;
printf("請輸入你要退掉的課程編號:\n");
scanf("%d",&num1);
p1=head1;
while(p1->num1!=num1) p1=p1->next;
for(i=0;p->nelenum[i]!=num1;i++);
for(j=i;p->nelenum[j]!=0;j++) p->nelenum[j]=p->nelenum[j+1];
p->nelenum[--j]=0;
(p1->nelepeo)--;
printf("退課成功!\n");
}
void hcheak()//學生選課子函數（查詢已選課程)
{
char c;
struct couse * p0;
struct student * p;
int num2,i,f=0;
printf("請輸入學號:\n");
scanf("%d",&num2);
p=head2;
while(p->num2!=num2 && p!=NULL) p=p->next;
if(p==NULL)
{
printf("不存在你的信息,請回主菜單錄入信息:\n");
goto end;
}
printf("已選課程編號:\n");
if(p->nelenum[0]==0)
{
printf("你還沒選課!\n");
goto end;
}
for(i=0;p->nelenum[i]!=0;i++)
{
printf("%d\n",p->nelenum[i]);
p0=head1;
while(p0->num1!=p->nelenum[i]) p0=p0->next;
f=f+p0->score;
}
printf("總學分:%d\n",f);
printf("是否進行退課(y/n)?");
getchar();
c=getchar();
while(c=='y')
{
back(p);
printf("繼續退課(y/n)?");
getchar();
c=getchar();
(p->nelen)--;
}
end:;
}
void elective()//學生選課主函數
{
int i;
printf("\t\t\t學生選課\n");
printf("1.查詢可選課程\n");
printf("2.查詢已選課程\n");
printf("3.返回主菜單\n");
printf("請輸入(1~3):\n");
scanf("%d",&i);
switch(i)
{
case(1):cheak();break;
case(2):hcheak();break;
case(3):break;
}
}
void listc()//輸出課程信息
{
struct couse * p;
p=head1;
printf("課程編號課程名稱學分課程已選人數課程人數上限\n");
while(p!=NULL)
{
printf("%-8d%10s%6d%8d%12d\n",p->num1,p->name1,p->score,p->nelepeo,p->Melepeo);
p=p->next;
}
}
void lists()//輸出學生信息
{
struct student * p;
p=head2;
printf("學生學號學生姓名已選課程數量\n");
while(p!=NULL)
{
printf("%-4d %10s %6d\n",p->num2,p->name2,p->nelen);
p=p->next;
}
}
void intoc()//存儲課程信息
{
FILE * fp;
struct couse * p;
char filepath[30];
printf("輸入課程信息要保存的文件路徑:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失敗!");
exit(0);
}
p=head1;
while(p!=NULL)
{
fprintf(fp,"%d %s %d %d %d\n",p->num1,p->name1,p->score,p->nelepeo,p->Melepeo);
p=p->next;
}
fclose(fp);
printf("課程信息已保存在%s中!\n",filepath);
}
void intos()//存儲學生信息
{
FILE * fp;
struct student * p;
char filepath[30];
printf("輸入學生信息要保存的文件路徑:");
getchar();
gets(filepath);
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失敗!");
exit(0);
}
p=head2;
while(p!=NULL)
{
fwrite(p,sizeof(struct student),1,fp);
p=p->next;
}
fclose(fp);
printf("學生信息已保存在%s中!\n",filepath);
}
void into()//存儲信息
{
int i;
printf("1.存儲課程信息\n");
printf("2.存儲學生信息\n");
printf("3.返回主菜單\n");
printf("請輸入(1~3)\n");
scanf("%d",&i);
switch(i)
{
case(1):intoc();break;
case(2):intos();break;
case(3):break;
}
}
void store()//信息主函數
{
int i;
printf("\t\t系統信息查看及存儲\n");
printf("1.查看課程信息\n");
printf("2.查看學生信息\n");
printf("3.存儲信息\n");
printf("4.返回主菜單\n");
printf("請輸入(1~4):\n");
scanf("%d",&i);
switch(i)
{
case(1):listc();break;
case(2):lists();break;
case(3):into();break;
case(4):break;
}
}
int main()//主函數
{
int i;
start:
printf("\n\t\t\t歡迎使用學生選課系統!\n");
printf("菜單:\n");
printf("1.錄入課程信息\n");
printf("2.課程管理\n");
printf("3.錄入學生信息\n");
printf("4.學生信息管理\n");
printf("5.學生選課\n");
printf("6.系統信息查看及存儲\n");
printf("7.退出系統\n");
printf("\n請輸入菜單選項(1~7):\n");
scanf("%d",&i);
if(i<1 || i>7)
{
printf("輸入錯誤,請重輸:\n");
goto start;
}
switch(i)
{
case(1):
{
system("cls");
inputc();
goto start;
break;
}
case(2):
{
system("cls");
managementc();
goto start;
break;
}
case(3):
{
system("cls");
inputs();
goto start;
break;
}
case(4):
{
system("cls");
managements();
goto start;
break;
}
case(5):
{
system("cls");
elective();
goto start;
break;
}
case(6):
{
system("cls");
store();
goto start;
break;
}
case(7):
{
system("cls");
printf("感謝使用本系統!\n\n再見!\n");
}
}
return(0);
}

8. 用數據結構（c語言版）編寫的學生選課系統

9. 怎樣用c語言做一個學生選課系統

：= =其實比較簡單,用c++,java,c#都可以做,就是用面向對象方法的編程語言就可以了.資料庫可以選用SQL.看一下書很快就可以做出來了,這個是很簡單的程序的

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