c語言學生選課系統教學視頻_學生選課系統C語言程序

1. 用數據結構（c語言版）編寫的學生選課系統

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);
}

2. 學生選課系統C語言程序

3. C語言程序設計，學生選課系統

這是這幾天我用C做的一個簡易的學生選課系統.其實是我們的1道程序實踐考試題,我想請大家看看,幫我提些建議.
#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)

4. 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);
}

5. 急求c語言：學生選課系統程序設計（最好含流程圖的）

#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;
}

7. c語言學生選課管理系統

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#define LEN sizeof(struct course)
#define FORM "%d %s %s %d %d %d %d %d"
#define FORM1 "%5d%20s%20s%5d%5d%5d%5d%5d\n"
#define INPUT &p1->num,p1->name,p1->kind,&p1->all_time,&p1->class_time,&p1->experiment_time,&p1->grade,&p1->term
#define OUTPUT p1->num,p1->name,p1->kind,p1->all_time,p1->class_time,p1->experiment_time,p1->grade,p1->term
struct course
{int num;
char name[20];
char kind[10];
int all_time;
int class_time;
int experiment_time;
int grade;
int term;
//int flag;
struct course *next;};

void mune() //菜單函數
{
printf("************************************\n");
printf("如果錄入信息，請選擇1\n");
printf("如果瀏覽信息，請選擇2\n");
printf("如果按學分查詢課程，請選擇3\n");
printf("如果按課程性質查詢課程，請選擇4\n");
printf("如果按選修課程查詢，請選擇5\n");
printf("如果想進行選課，請選擇6\n");
printf("如果想退出，請選擇0\n");
printf("*************************************\n");
}

struct course* scan(FILE*fp) //輸入課程信息
{
struct course*head; //鏈表頭指針
struct course*p1,*p2; //指示指針
int n=0;
p1=p2=(struct course*)malloc(LEN); //開辟內存空間
printf("課程編號課程名稱課程性質課程總學時教學用時實驗用時學分開課學期\n");
printf("請輸入數據：");
scanf(FORM,INPUT); //輸入數據
fprintf(fp,FORM1,OUTPUT);
head=NULL;
while(p1->num!=0) //鏈表結束的判斷條件
{n=n+1;
if(n==1)
head=p1; //當在第一個結點時，頭指針等於第一個結點的首地址
else
p2->next=p1;
p2=p1;
p1=(struct course*)malloc(LEN); //繼續開辟內存空間
printf("請輸入數據：");
scanf("%ld",&p1->num); //輸入課程號
if(p1->num!=0) //判斷課程號是否為0，如果為0，程序結束
{scanf("%s %s %d %d %d %d %d",p1->name,p1->kind,&p1->all_time,&p1->class_time,&p1->experiment_time,&p1->grade,&p1->term);
//p1->flag=0;
fprintf(fp,FORM1,OUTPUT);}
}
p2->next=NULL; //最後一個結點的值為空
fclose(fp); //關閉文件
return(head); //返回頭指針
}

void print(struct course*head) //將輸入的內容顯示在屏幕上
{
struct course*p1;
if(head!=NULL) //如果頭指針為空，則程序結束
p1=head;
else
goto end;
printf("課程編號課程名稱課程性質課程總學時教學用時實驗用時學分開課學期\n");
do
{printf(FORM1,OUTPUT); //輸出內容
p1=p1->next; //指針指向下一個結點
}while(p1!=NULL);
end:;
}

void search_grade(struct course*head) //按學分查詢課程
{
struct course*p1;
int k,n;
n=0;
p1=head;
printf("請輸入查詢課程的學分：\n");
scanf("%d",&k);
while(p1!=NULL) //根據鏈表裡面的內容輸出
{if(k==p1->grade)
{printf("課程編號課程名稱課程性質課程總學時教學用時實驗用時學分開課學期\n");
printf(FORM1,OUTPUT);
n++;}
p1=p1->next;}
if(n==0)
printf("無結果\n"); //如果沒有課程，則輸出無結果
}

void search_kind(struct course*head)//按課程性質查詢
{
char a[10];
int n=0;
struct course*p1;
p1=head;
gets(a);
while(p1!=NULL)
{if(strcmp(a,p1->kind)==0) //用strcmp函數進行字元串的比較
{printf("課程編號課程名稱課程性質課程總學時教學用時實驗用時學分開課學期\n");
printf(FORM1,OUTPUT); //如果相同，輸出課程信息
n++;}
p1=p1->next;}
if(n==0)
printf("無結果\n");
}

void search_else(struct course*head) //查詢所有選修課程
{
struct course*p1;
int n=0;
p1=head;
while(p1!=NULL)
{if(strcmp(p1->kind,"xuanxiu")==0)
{printf("課程編號課程名稱課程性質課程總學時教學用時實驗用時學分開課學期\n");
printf(FORM1,OUTPUT);
n++;}
p1=p1->next;
}
if(n==0)
printf("沒有選修課程\n");
}

void choose(struct course*head) //選課函數
{
struct course*p1;
int k,s=0; //s為所選課程的學分總數，K為所選課程的課程編號
if(head!=NULL)
{p1=head;
while(s<60) //判斷選課是否結束
{
p1=head;
printf("請輸入選擇課程的課程編號：");
scanf("%d",&k);
while(p1!=NULL) //當遍歷一遍鏈表之後，循環結束
{
if(k==p1->num) //當找到對應的課程編號後，輸出課程信息
{s=s+p1->grade;
printf("課程編號課程名稱課程性質課程總學時教學用時實驗用時學分開課學期\n");
printf(FORM1,OUTPUT);
printf("選課成功！\n");
break;}
else
p1=p1->next;
if(p1==NULL) //鏈表走到最後，則沒有找到相應課程
printf("沒有這門課程\n");
}
}
printf("學分達到要求\n");
}
}

void main()
{ struct course*head;
FILE*fp;
int k;
fp=fopen("課程list.txt","a+");
loop:mune(); //goto循環的開始位置
printf("請輸入你的操作:\n");
scanf("%d",&k);
if(k!=0)
{switch(k) //利用switch語句實現菜單式工作
{case 1:head=scan(fp);break;
case 2:print(head);break;
case 3:search_grade(head);break;
case 4:search_kind(head);break;
case 5:search_else(head);break;
case 6:choose(head);break;
default:printf("操作不存在");}
goto loop;} //利用goto語句實現循環
}

自己做的，比較粗糙...用的頭指針作為參數，所以只能一次性執行完~~~

8. 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

9. 用C語言寫一個學生選課系統

c語言學生選課系統教學視頻

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