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#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(jié)構(gòu)體
{
int num1;
char name1[20];
int score;
int nelepeo;//課程已選人數(shù)
int Melepeo;//課程人數(shù)上限
struct couse * next;
};
struct student//學生信息結(jié)構(gòu)體
{
int num2;
char name2[20];
int nelenum[50];//已選課程編號
int nelen;//已選課程數(shù)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(shù)(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(shù)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(shù)(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(shù)
{
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(shù)(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(shù)(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(shù)
{
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(shù)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(shù)（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(shù)（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(shù)
{
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(shù)(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(shù)（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(shù)
{
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(shù)(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(xù)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(shù)（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(xù)退課(y/n)?");
getchar();
c=getchar();
(p->nelen)--;
}
end:;
}
void elective()//學生選課主函數(shù)
{
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(shù) 課程人數(shù)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(shù)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(shù)
{
int i;
printf("\t\t系統(tǒng)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(shù)
{
int i;
start:
printf("\n\t\t\t歡迎使用學生選課系統(tǒng)!\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(tǒng)信息查看及存儲\n");
printf("7.退出系統(tǒng)\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(tǒng)!\n\n再見!\n");
}
}
return(0);
}

復制代碼

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