#include<stdio.h>
#include<stdlib.h>
int N1,N2,kk1,kk2,kk3
struct couse * head1
struct student * head2
struct couse//课程信息结构体
{
int num1
char name1[20]
int score
int nelepeo//课程已选人数
int Melepeo//课程人数上限
struct couse * next
}
struct student//学生信息结构体
{
int num2
char name2[20]
int nelenum[50]//已选课程编号
int nelen//已选课程数量
struct student * next
}
void Ms()
{
for(kk1=0kk1<1100kk1++)
for(kk2=0kk2<1200kk2++)
for(kk3=0kk3<1200kk3++)
}
void keyboardc()//录入课程子函数(从键盘录入)
{
struct couse *p1,*p2
N1=0
p1=p2=(struct couse*)malloc(sizeof(struct couse))
printf("课程编号\t课程名称\t学分\t课程人数上限\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()//录入键盘子函数(从文件录入)
#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(" 输入选课程信息，以6个0结束：\n")
printf(" 课程代码课名 任教老师 上课星期上课时间学分\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,"欢迎进入东华理工大学2008-2009学年选修课系统（4-13）\n")
fprintf(fp,"课程代码 课名 任教老师上课星期 上课时间 学分\n")
for(p=headpp->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("没有选修课程记录！\n")
return
}
printf("欢迎进入东华理工大学2008-2009学年选修课系统（4-13）\n")
printf("课程代码 课名 任教老师上课星期 上课时间 学分\n")
for(p=headpp->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("是否进行插入课程，如果需要插入请按回车建，不进行按空格结束！\n")
ch=getchar()
while(ch!=' '){
subj=(SUB*)malloc(sizeof(SUB))
ptr=subj
printf(" 输入要插入的课程信息：\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=headptr2ptr2=ptr2->next)
if(ptr2->next==NULL){
ptr2->next=subj
subj->next=NULL
break
}
ch='a'
}
printf("继续请按回车建，结束请按空格：\n")
ch1=getchar()
ch=getchar()
}
return head
}
SUB *del(SUB *head)
{
SUB*p1,*p2
char ch,ch1
int num
printf("是否进行课程删除，要删除请按回车键，不进行请按空格：\n")
ch=getchar()
while(ch!=' ')
{
printf("输入要删除的课程代码：\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("继续删除请按回车键，结束请按空格：\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=0i<5i++)
{
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=0i<5i++)
{
if(strcmp(title[i][12],head->na)!=0 &&title[i][12]!='0')
{ printf("你输入的课程名不正确，请从新输入：\n")
scanf_form()
}
}
}
}
STU *study_form(SUB*head)
{
STU *hand,*tall,*q
int i
char ch,ch1
hand=tall=NULL
printf("输入你个人信息，及选修的课名，以4个0结束：\n")
printf("注：每个学生至少选修3门课，大于3门时按回车键继续，空格结束：\n")
scanf_form()
while(number!=0)
{
q=(STU*)malloc(sizeof(STU))
q->number=number
q->classes=classes
strcpy(p->chinesename,chinesename)
for(i=0i<5i++)
strcpy(p->title[i],title[i][12])
if(hand=NULL)
hand=q
else
tall->other=q
tall=q
scanf_form()
for(i=0i<5i++)
{
if(strcmp(title[i][12],head->na)!=0&&titli[i][12]!='0')
{ printf("你输入的课程名不正确，请从新输入：\n")
scanf_form()
}
}
tall->other=NULL
return hand
}
}
void savefiles(STU*hand)
{
STU *q
FILE *fq
fq=fopen("studennt.txt","w")
fprintf(fq, "学生选课信息表：\n")
for(q=handqq=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("没有学生选课信息记录！\n")
return
}
printf("学生选课信息一览表：\n")
printf("学号 班级姓名课名：\n")
for(q=handqq->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("是否要进行插入学生选课信息，如果需要请按回车建，结束请按0：\n")
ch=getchar()
while(ch!=' ')
{
stuj=(STU*)malloc(sizeof(STU))
prt=stuj
printf("输入要插入的学生选课信息：\n")
scanf_form()
if(hand==NULL)
{hand=prt
hand->other=NULL
}
else
{for(prt2=handprt2prt2=prt2->other)
if(prt2->other==NULL)
{prt2->other=stuj
stuj->other=NULL
break
}
ch='a'
}
printf("继续插入请按回车建，结束请按空格：\n")
ch1=getchar()
ch=getchar()
}
return hand
}
STU *dells(STU *hand)
{
STU *q1,*q2
char ch,ch1
int number
printf("是否进行学生选课信息删除，要删除请按回车建，不进行请按空格：\n")
ch=getchar()
while(ch!=' ')
{
printf("输入要删除的学号：\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("继续删除请按回车建，结束请按空格：\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("是否进入查询，按回车键进入，空格结束:\n")
ch=getchar()
while(ch!=' ')
{
printf("请输入要查询的学号：\n")
for(prt=handprtprt=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("继续查找请按回车键，结束请按空格键：\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)
}
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