学生选课系统代码.docx
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学生选课系统代码
#include<>
#include<>
intN1,N2,kk1,kk2,kk3;
structcouse*head1;
structstudent*head2;
structcouse
{
intnum1;
charname1[20];
intscore;
intnelepeo;
intMelepeo;
structcouse*next;
};
structstudent
{
intnum2;
charname2[20];
intnelenum[50];
intnelen;
structstudent*next;
};
voidMs()
{
for(kk1=0;kk1<1100;kk1++)
for(kk2=0;kk2<1200;kk2++)
for(kk3=0;kk3<1200;kk3++);
}
voidkeyboardc()
{
structcouse*p1,*p2;
N1=0;
p1=p2=(structcouse*)malloc(sizeof(structcouse));
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;
elsep2->next=p1;
p2=p1;
p1=(structcouse*)malloc(sizeof(structcouse));
scanf("%d%s%d%d",&p1->num1,p1->name1,&p1->score,&p1->Melepeo);
p1->nelepeo=0;
}
p2->next=NULL;
}
voidfilec()
{
FILE*fp;
charfilepath[20];
structcouse*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=(structcouse*)malloc(sizeof(structcouse));
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;
elsep2->next=p1;
p2=p1;
p1=(structcouse*)malloc(sizeof(structcouse));
fscanf(fp,"%d%s%d%d%d",&p1->num1,p1->name1,&p1->score,&p1->nelepeo,&p1->Melepeo);
}
p2->next=NULL;
}
voidinputc()
{
inti;
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;
}
}
voidinsertc(structcouse*incouse)
{
structcouse*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;
elsep2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=NULL;
}
}
N1=N1+1;
}
voiddelc(intnum1)
{
structcouse*p1,*p2;
if(head1==NULL)
{
printf("\n没有课程,无法删除!
\n");
gotoend;
}
p1=head1;
while(num1!
=p1->num1&&p1->next!
=NULL)
{
p2=p1;
p1=p1->next;
}
if(num1==p1->num1)
{
if(p1==head1)head1=p1->next;
elsep2->next=p1->next;
printf("已删除该编号课程!
\n");
N1=N1-1;
}
elseprintf("无该编号的课程!
\n");
end:
;
}
voidmanagementc()
{
structcouse*incouse;
inti,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=(structcouse*)malloc(sizeof(structcouse));
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;
}
}
voidkeyboards()
{
inti;
structstudent*p1,*p2;
N2=0;
p1=p2=(structstudent*)malloc(sizeof(structstudent));
printf("学生学号\t学生姓名\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;
elsep2->next=p1;
p2=p1;
p1=(structstudent*)malloc(sizeof(structstudent));
scanf("%d%s",&p1->num2,p1->name2);
p1->nelen=0;
for(i=0;i<20;i++)p1->nelenum[i]=0;
}
p2->next=NULL;
}
voidfiles()
{
inti=0;
FILE*fp;
charfilepath[20];
structstudent*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=(structstudent*)malloc(sizeof(structstudent));
fread(p1,sizeof(structstudent),1,fp);
head2=NULL;
while(!
feof(fp))
{
i=0;
N2=N2+1;
if(N2==1)head2=p1;
elsep2->next=p1;
p2=p1;
p1=(structstudent*)malloc(sizeof(structstudent));
fread(p1,sizeof(structstudent),1,fp);
}
p2->next=NULL;
}
voidinputs()
{
inti;
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;
}
}
voidinserts(structstudent*incouse)
{
structstudent*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;
elsep2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=NULL;
}
}
N2=N2+1;
}
voiddels(intnum2)
{
structstudent*p1,*p2;
if(head2==NULL)
{
printf("\n没有该学生信息,无法删除!
\n");
gotoend;
}
p1=head2;
while(num2!
=p1->num2&&p1->next!
=NULL)
{
p2=p1;
p1=p1->next;
}
if(num2==p1->num2)
{
if(p1==head2)head2=p1->next;
elsep2->next=p1->next;
printf("已删除该学生信息!
\n");
N2=N2-1;
}
elseprintf("无该学号的学生!
\n");
end:
;
}
voidmanagements()
{
structstudent*incouse;
inti,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=(structstudent*)malloc(sizeof(structstudent));
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;
}
}
voidelect(structstudent*s)
{
structcouse*p;
intnum1,i;
printf("请输入要选课的编号:
\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)++;
}
voidcheak()
{
chare;
structcouse*c;
structstudent*s;
intnum2,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");
gotoend;
}
c=head1;
printf("你的可选课程编号:
\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("你已选完所有课程,无法再多选!
\n");
gotoend;
}
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:
;
}
voidback(structstudent*p)
{
structcouse*p1;
intnum1,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=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("退课成功!
\n");
}
voidhcheak()
{
charc;
structcouse*p0;
structstudent*p;
intnum2,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");
gotoend;
}
printf("已选课程编号:
\n");
if(p->nelenum[0]==0)
{
printf("你还没选课!
\n");
gotoend;
}
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("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();
(p->nelen)--;
}
end:
;
}
voidelective()
{
inti;
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;
}
}
voidlistc()
{
structcouse*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;
}
}
voidlists()
{
structstudent*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;
}
}
voidintoc()
{
FILE*fp;
structcouse*p;
charfilepath[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);
}
voidintos()
{
FILE*fp;
structstudent*p;
charfilepath[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(structstudent),1,fp);
p=p->next;
}
fclose(fp);
printf("学生信息已保存在%s中!
\n",filepath);
}
voidinto()
{
inti;
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;
}
}
voidstore()
{
inti;
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;
}
}
intmain()
{
inti;
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");
gotostart;
}
switch(i)
{
case
(1):
{
system("cls");
inputc();
gotostart;
break;
}
case
(2):
{
system("cls");
managementc();
gotostart;
break;
}
case(3):
{
system("cls");
inputs();
gotostart;
break;
}
case(4):
{
system("cls");
managements();
gotostart;
break;
}
case(5):
{
system("cls");
elective();
gotostart;
b