#include<stdio.h>
#include<stdlib.h>
int N1,N2,kk1,kk2,kk3
struct couse * head1
struct student * head2
{
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)
根据自己的需要，自己看着修改一下 ^^#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)
{
FILE * fp
char filepath[20]
struct couse *p1,*p2
N1=0
printf("输入要读入的文件路径:")
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()//录入课程主函数
{
int i
printf("\t\t\t录入课程信息\n")
printf("\n1.从键盘录入\n")
printf("2.从文件录入\n")
printf("3.返回主菜单\n")
printf("请选择(1~3):\n")
scanf("%d",&i)
switch(i)
{
case(1):keyboardc()break
case(2):filec()break
case(3):break
}
}
void insertc(struct couse *incouse)//课程管理子函数(增加课程)
{
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)//课程管理子函数(删除课程)
{
struct couse *p1,*p2
if(head1==NULL)
{
printf("\n没有课程,无法删除!\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("已删除该编号课程!\n")
N1=N1-1
}
else printf("无该编号的课程!\n")
end:
}
void managementc()//课程管理主函数
{
struct couse * incouse
int i,num1
printf("\t\t\t课程管理\n")
printf("1.新增课程\n")
printf("2.删除课程\n")
printf("3.返回主菜单\n")
printf("请选择(1~3):\n")
scanf("%d",&i)
switch(i)
{
case(1):
{
incouse=(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",&incouse->num1,incouse->name1,&incouse->score,&incouse->Melepeo)
incouse->nelepeo=0
insertc(incouse)
break
}
case(2):
{
printf("请输入要删除课程的编号:\n")
scanf("%d",&num1)
delc(num1)
break
}
case(3):break
}
}
void keyboards()//录入学生信息子函数（从键盘录入）
{
int i
struct student *p1,*p2
N2=0
p1=p2=(struct student *)malloc(sizeof(struct student))
printf("学生学号\t学生姓名\n")
scanf("%d%s",&p1->num2,p1->name2)
p1->nelen=0
for(i=0i<20i++) 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=0i<20i++) p1->nelenum[i]=0
}
p2->next=NULL
}
void files()//录入学生信息子函数（从文件录入）
{
int i=0
FILE * fp
char filepath[20]
struct student *p1,*p2
N2=0
printf("输入要读入的文件路径:")
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()//录入学生信息主函数
{
int i
printf("\t\t\t录入学生信息\n")
printf("\n1.从键盘录入\n")
printf("2.从文件录入\n")
printf("3.返回主菜单\n")
printf("请选择(1~3):\n")
scanf("%d",&i)
switch(i)
{
case(1):keyboards()break
case(2):files()break
case(3):break
}
}
void inserts(struct student * incouse)//学生信息管理子函数(填加学生信息)
{
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)//学生信息管理子函数（删除学生信息)
{
struct student *p1,*p2
if(head2==NULL)
{
printf("\n没有该学生信息,无法删除!\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("已删除该学生信息!\n")
N2=N2-1
}
else printf("无该学号的学生!\n")
end:
}
void managements()//学生信息管理主函数
{
struct student * incouse
int i,num2
printf("\t\t\t学生信息管理\n")
printf("1.新增学生信息\n")
printf("2.删除学生信息\n")
printf("3.返回主菜单\n")
printf("请选择(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("学生学号\t学生姓名\n")
scanf("%d%s",&incouse->num2,incouse->name2)
inserts(incouse)
break
}
case(2):
{
printf("请输入要删除学生的学号:\n")
scanf("%d",&num2)
dels(num2)
break
}
case(3):break
}
}
void elect(struct student * s)//选课
{
struct couse * p
int num1,i
printf("请输入要选课的编号:\n")
scanf("%d",&num1)
for(i=0s->nelenum[i]!=0i++)
s->nelenum[i]=num1
(s->nelen)++
p=head1
while(p->num1!=num1) p=p->next
(p->nelepeo)++
}
void cheak()//学生选课子函数(查询可选课程)
{
char e
struct couse * c
struct student * s
int num2,i,j=0,t=0
printf("请输入你的学号:")
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,请进入主菜单录入你的信息!\n")
goto end
}
c=head1
printf("你的可选课程编号:\n")
while(c!=NULL)
{
for(t=0,i=0s->nelenum[i]!=0i++)
{
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("你已选完所有课程，无法再多选!\n")
goto end
}
printf("选课(y/n)?:\n")
getchar()
e=getchar()
i=0
while(e=='y')
{
elect(s)
printf("继续选课(y/n)?:\n")
getchar()
e=getchar()
}
end:
}
void back(struct student * p)//退课
{
struct couse * p1
int num1,i,j
printf("请输入你要退掉的课程编号:\n")
scanf("%d",&num1)
p1=head1
while(p1->num1!=num1) p1=p1->next
for(i=0p->nelenum[i]!=num1i++)
for(j=ip->nelenum[j]!=0j++) p->nelenum[j]=p->nelenum[j+1]
p->nelenum[--j]=0
(p1->nelepeo)--
printf("退课成功!\n")
}
void hcheak()//学生选课子函数（查询已选课程)
{
char c
struct couse * p0
struct student * p
int num2,i,f=0
printf("请输入学号:\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,请回主菜单录入信息:\n")
goto end
}
printf("已选课程编号:\n")
if(p->nelenum[0]==0)
{
printf("你还没选课!\n")
goto end
}
for(i=0p->nelenum[i]!=0i++)
{
printf("%d\n",p->nelenum[i])
p0=head1
while(p0->num1!=p->nelenum[i]) p0=p0->next
f=f+p0->score
}
printf("总学分:%d\n",f)
printf("是否进行退课(y/n)?")
getchar()
c=getchar()
while(c=='y')
{
back(p)
printf("继续退课(y/n)?")
getchar()
c=getchar()
(p->nelen)--
}
end:
}
void elective()//学生选课主函数
{
int i
printf("\t\t\t学生选课\n")
printf("1.查询可选课程\n")
printf("2.查询已选课程\n")
printf("3.返回主菜单\n")
printf("请输入(1~3):\n")
scanf("%d",&i)
switch(i)
{
case(1):cheak()break
case(2):hcheak()break
case(3):break
}
}
void listc()//输出课程信息
{
struct couse * p
p=head1
printf("课程编号 课程名称 学分 课程已选人数 课程人数上限\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()//输出学生信息
{
struct student * p
p=head2
printf("学生学号 学生姓名 已选课程数量\n")
while(p!=NULL)
{
printf("%-4d %10s %6d\n",p->num2,p->name2,p->nelen)
p=p->next
}
}
void intoc()//存储课程信息
{
FILE * fp
struct couse * p
char filepath[30]
printf("输入课程信息要保存的文件路径:")
getchar()
gets(filepath)
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失败!")
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("课程信息已保存在%s中!\n",filepath)
}
void intos()//存储学生信息
{
FILE * fp
struct student * p
char filepath[30]
printf("输入学生信息要保存的文件路径:")
getchar()
gets(filepath)
if((fp=fopen(filepath,"w"))==NULL)
{
printf("\n保存失败!")
exit(0)
}
p=head2
while(p!=NULL)
{
fwrite(p,sizeof(struct student),1,fp)
p=p->next
}
fclose(fp)
printf("学生信息已保存在%s中!\n",filepath)
}
void into()//存储信息
{
int i
printf("1.存储课程信息\n")
printf("2.存储学生信息\n")
printf("3.返回主菜单\n")
printf("请输入(1~3)\n")
scanf("%d",&i)
switch(i)
{
case(1):intoc()break
case(2):intos()break
case(3):break
}
}
void store()//信息主函数
{
int i
printf("\t\t系统信息查看及存储\n")
printf("1.查看课程信息\n")
printf("2.查看学生信息\n")
printf("3.存储信息\n")
printf("4.返回主菜单\n")
printf("请输入(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()//主函数
{
int i
start:
printf("\n\t\t\t欢迎使用学生选课系统!\n")
printf("菜单:\n")
printf("1.录入课程信息\n")
printf("2.课程管理\n")
printf("3.录入学生信息\n")
printf("4.学生信息管理\n")
printf("5.学生选课\n")
printf("6.系统信息查看及存储\n")
printf("7.退出系统\n")
printf("\n请输入菜单选项(1~7):\n")
scanf("%d",&i)
if(i<1 || i>7)
{
printf("输入错误,请重输:\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("感谢使用本系统!\n\n再见!\n")
}
}
return(0)
}
//7《学生选修课程系统》设计任务//（1）输入功能：输入30名学生学号、班级、姓名、选修课名称。
//（2）设置要求：每个学生至少选修3科，总选修科目至少设置15科。
//（3）查询功能：按学号、姓名、选修课显示各选修课上课时间和地点。
#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)
}
