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有bug的课设.c
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#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<malloc.h>
void prin1();
void choose();
typedef struct subjects //定义课程信息结构体
{
int num; //课程编号
char name[20]; //课程名称
char kind[10];//课程性质
int stime;//总学时
int ttime;//授课学时
int etime;//实验或上机学时
int score;//学分
int term;//开课学期
struct subjects *next;
} SUB;
SUB *head=NULL;
//下面定义链表模块
SUB *create_form()
{
SUB *head,*tail,*p;//定义头节点，尾节点，中间节点。
int num,stime,ttime;
int etime,score,term;
char name[20],kind[10];
int size=sizeof(SUB);
head=tail=NULL;
printf("输入选修课程信息:\n");
scanf("%d%s%s%d%d%d%d%d",&num,name,kind,&stime,&ttime,&etime,&score,&term);
while(num!=0)
{
p=(SUB *)malloc(size);
p->num=num;
strcpy(p->name,name);
strcpy(p->kind,kind);
p->stime=stime;
p->ttime=ttime;
p->etime=etime;
p->score=score;
p->term=term;
if(head==NULL)
head=p;
else
tail->next=p;
tail=p;
scanf("%d%s%s%d%d%d%d%d",&num,name,kind,&stime,&ttime,&etime,&score,&term);
}
tail->next=NULL;
return head;
}
//保存文件模块
void savefile() //保存文件
{
SUB *p;
FILE *fp;fp=fopen("2.txt","w");
if(fp==NULL)exit(0);
printf("课程编号 课程名称 课程性质 总学时 授课学时 实践或上级学时 学分 开课学期\n");
for(p=head;p;p=p->next)
fprintf(fp,"%5d%12s%9s%9d%9d%11d%11d%7d\n",p->num,p->name,p->kind,p->stime,p->ttime,p->etime,p->score,p->term);
fclose(fp);
printf("创建后信息已放入'2.txt'文件中\n");
system("pause");}
void savefile1()
{
SUB *p;
FILE *fp;fp=fopen("3.txt","w");
if(fp==NULL)exit(0);
for(p=head;p;p=p->next)
fprintf(fp,"%5d%12s%9s%9d%9d%11d%11d%7d\n",p->num,p->name,p->kind,p->stime,p->ttime,p->etime,p->score,p->term);
fclose(fp);
printf("创建后信息已放入'3.txt'文件中\n");
system("pause");
}
//读取文件模块
void readfile()//阅读文件
{
void *myInsert(SUB*);
SUB *newSub;//新课程
int num,stime,ttime,etime;
int score,term;
char c,name[20],kind[10],fname[20];
FILE *fp;
fp=fopen("2.txt","r");
while(!feof(fp))
{
newSub=(SUB*)malloc(sizeof(SUB));
fscanf(fp,"%d%s%s%d%d%d%d%d\n",&newSub->num,newSub->name,newSub->kind,&newSub->stime,&newSub->ttime,&newSub->etime,&newSub->score,&newSub->term);
myInsert(newSub);
}
fclose(fp);
}
//下面定义浏览模块
void prin()
{
SUB *ptr;
head=NULL;
readfile();
if(head==NULL)
{
printf("\n\n\t**********NO RECORDS!**********\n");
return;
}
printf("课程编号 课程名称 课程性质 总学时 授课学时 实践或上级学时 学分 开课学期\n");
for(ptr=head;ptr;ptr=ptr->next)
{
printf("%5d%12s%9s%9d%9d%11d%11d%7d\n",ptr->num,ptr->name,ptr->kind,ptr->stime,ptr->ttime,ptr->etime,ptr->score,ptr->term);
}
system("pause");
}
//下面定义浏览已选修课程模块
void prin1()
{
SUB *ptr;
FILE *fp;
if((fp=fopen("3.txt","r"))==NULL)
{
printf("Cannot open file.\n");
choose();
}
printf("课程编号 课程名称 课程性质 总学时 授课学时 实践或上机学时 学分 开课学时\n");
while(!feof(fp))
{
ptr=(SUB*)malloc(sizeof(SUB));
fscanf(fp,"%d%s%s%d%d%d%d%d",&ptr->num,ptr->name,ptr->kind,&ptr->stime,&ptr->ttime,&ptr->etime,&ptr->score,&ptr->term);
printf("%5d%12s%9s%9d%9d%11d%11d%7d\n",ptr->num,ptr->name,ptr->kind,ptr->stime,ptr->ttime,ptr->etime,ptr->score,ptr->term);
}
system("pause");
}
//插入链表模块
void *myInsert(SUB *subj)//链表插入操作
{
SUB *ptr,*ptr2;
ptr=subj;
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;
}
}
return head;
}
//添加模块
void *insert()
{
SUB *ptr,*subj;
int size=sizeof(SUB);
char ch,ch1;
while(ch!='0')
{
subj=(SUB *)malloc(size);
ptr=subj;
printf("请输入要插入的课程信息:\n");
printf("\n\t\t 请输入课程编号:");
scanf("%d",&subj->num);
printf("\n\t\t 请输入课程名称:");
scanf("%s",&subj->name);
printf("\n\t\t 请输入课程性质:");
scanf("%s",&subj->kind);
printf("\n\t\t 请输入总学时:");
scanf("%d",&subj->stime);
printf("\n\t\t 请输入授课学时:");
scanf("%d",&subj->ttime);
printf("\n\t\t 请输入实践或上机学时:");
scanf("%d",&subj->etime);
printf("\n\t\t 请输入学分:");
scanf("%d",&subj->score);
printf("\n\t\t 请输入开课学期:");
scanf("%d",&subj->term);
myInsert(subj);
printf("\n添加完毕，新信息存入文件夹\n");
printf("\n\n 继续插入请按回车\n");
printf("\n结束添加请按 0:[ ]\b\b");
ch1=getchar();
ch=getchar();
}
return head;
}
//删除模块
void *del()
{
SUB *p1,*p2;
char ch,ch1;
int num;
while(ch!='0')
{
printf("请输入想删除的课程编号:[ ]\b\b\b\b");
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)
{
if(p2->num==num)
{
p1->next=p2->next;
free(p2);
}
else
p1=p2;
p2=p1->next;
}
printf("\n继续删除按回车\n");
printf("\n结束删除按 0:[]\b\b");
ch1=getchar();
ch=getchar();
}
return head;
system("pause");
}
//选修课程模块
void choose()
{
SUB *p,*q;
int a[5];
int num,total=0,i=0,j;
printf("输入想要选修的课程编号,编号之间用空格分开\n");
scanf("%d",&num);
printf("如果确认输入完要选的编号，请输入 0:[]\n\n");
while(num!=0)
{
for(p=head;p;p=p->next)
if(p->num==num)
{
total=total+p->score;
a[i]=num;
i++;
}
scanf("%d",&num);
}
if(total<60)
{
printf("选修总学分为%d,未达到60，选修失败！",total);
system("pause");
}
else
{
FILE*fp;
fp=fopen("my_sub.txt","w");
for(j=0;j<i;j++)
for(q=head;q;q=q->next)
if(q->num==a[j])
fprintf(fp,"%5d%12s%9s%9d%9d%11d%11d%7d\n",q->num,q->name,q->kind,q->stime,q->ttime,q->etime,q->score,q->term);
fclose(fp);
printf("\t\t\n*****选修成功！*******\n");
printf("\n 您选修的课程总学分为%d,课程分别为:\n",total);
printf("课程编号 课程名称 课程性质 总学时 授课学时 实践或上级学时 学分 开课学期\n");
for(j=0;j<i;j++)
for(q=head;q;q=q->next)
if(q->num==a[j])
printf("%5d%12s%9s%9d%9d%11d%11d%7d\n",q->num,q->name,q->kind,q->stime,q->ttime,q->etime,q->score,q->term);
printf("\n以上信息全部保存在'my_sub.txt'中\n");
}
system("pause");
}
//下面定义查询板块
void search()
{
int a,num;
int t=1;
char type[10],min[10];
SUB *ptr;
L1:system("cls");
printf("\n\n\t\t***********请选择查询方式***********\n");
printf("\n\t\t\t1--按课程名称查找\n");
printf("\n\t\t\t2--按课程性质查找\n");
printf("\n\t\t\t3--按学分查找\n");
printf("\n\t\t\t4-退出查找\n");
printf("\n\n\t\t************************************\n");
printf("\n\nChoose your numeber(1-4):[]\b\b");
scanf("%d",&a);
switch(a)
{
case 1:printf("输入查找课程名:");
scanf("%s",min);
printf("课程编号 课程名称 课程性质 总学时 授课学时 实践或上机学时 学分 开课学时\n");
for(ptr=head;ptr;ptr=ptr->next)
if(strcmp(min,ptr->name)==0)
{
printf("%5d%12s%9s%9d%9d%11d%11d%7d\n",ptr->num,ptr->name,ptr->kind,ptr->stime,ptr->ttime,ptr->etime,ptr->score,ptr->term);
t=0;
}
if(t)
printf("\t\n 未找到！\n");
t=1;
system("pause");
goto L1;
case 2:printf("请输入查找课程性质:");
scanf("%s",type);
printf("课程编号 课程名称 课程性质 总学时 授课学时 实践或上机学时 学分 开课学时\n");
for(ptr=head;ptr;ptr=ptr->next)
if(strcmp(type,ptr->kind)==0)
{
printf("%5d%12s%9s%9d%9d%11d%11d%7d\n",ptr->num,ptr->name,ptr->kind,ptr->stime,ptr->ttime,ptr->etime,ptr->score,ptr->term);
t=0;
}
if(t)
printf("\t\n 未找到！\n");
t=1;
system("pause");
goto L1;
case 3:printf("输入要查找的课程的学分:");
scanf("%d",&num);
printf("课程编号 课程名称 课程性质 总学时 授课学时 实践或上机学时 学分 开课学时\n");
for(ptr=head;ptr;ptr=ptr->next)
if(ptr->score==num)
{
printf("%5d%12s%9s%9d%9d%11d%11d%7d\n",ptr->num,ptr->name,ptr->kind,ptr->stime,ptr->ttime,ptr->etime,ptr->score,ptr->term);
t=0;
}
if(t)
printf("\n\t未找到！\n");
t=1;
system("pause");
goto L1;
case 4:break;
}
}
//下面定义管理员板块
void Mangers()
{
int n,w=1,flag=0,i=3;
char s[8];
char password[7]="1";//密码为1
do
{
printf("\n\nEnter password:");//输入密码
scanf("%s",s);
if(!strcmp(s,password))//密码匹配验证
{
flag=1;
break;//输入正确
}
else
{
printf("\n\nError!You only have %d times!Pleasa enter again:\n",i-1);
i--;
}
}
while(i>0);
if(!flag)
{
printf("you have already entered 3 times!");//输入密码超过3次，退出
exit(0);
}
do
{
system("cls");//清屏
puts("\n\n\t\t*************管 理 员 菜 单**************\n\n");
puts("\t\t\t\t1--浏览课程\n");
puts("\t\t\t\t2--查询课程\n");
puts("\t\t\t\t3--添加课程\n");
puts("\t\t\t\t4--删除课程\n");
puts("\t\t\t\t5--返回主菜单");
puts("\n\n\t\t******************************************\n");
printf("choose your number(1-5):[]\b\b");
scanf("%d",&n);
switch(n)
{
case 1:prin();break;//浏览
case 2:search();break;//查询
case 3:insert();savefile();break;//添加
case 4:del();savefile();break;//删除
case 5:return;
defaule:;
}
}while(w==1);
}
//下面定义学生板块
void Students()
{
int n,w=1;
do
{
system("cls");
puts("\n\n\t\t**********************************\n\n");
puts("\t\t\t\t1--浏览所有课程\n");
puts("\t\t\t\t2--查询课程信息\n");
puts("\t\t\t\t3--选择选修课程\n");
puts("\t\t\t\t4--浏览我选修的课程\n");
puts("\t\t\t\t5--删除错选课程\n");
puts("\t\t\t\t6--返回");
puts("\n\n\t\t****************************************\n");
printf("choose your number(1-6):[]\b\b");
scanf("%d",&n);
switch(n)
{
case 1:prin();break;//浏览
case 2:search();break;//查询
case 3:choose();break;//选择
case 4:prin1();break;//浏览我选修的
case 5:del();savefile();break;//删除错选
case 6:return;//返回
default:;
}
}
while(w==1);
}
//下面编辑主页面
int main()
{
int n,w=1;
do
{
system("cls");//清除屏幕
puts("\n\n\t\t****************MENU****************\n\n");
puts("\t\t\t\t1.以管理员身份登录\n");
puts("\t\t\t\t2.以学生身份登录\n");
puts("\t\t\t\t3.退出");
puts("\n\n\t\t***********************************\n");
printf("Choose your number(1--3):[ ]\b\b");
scanf("%d",&n);
switch(n)
{
case 1:Mangers();break;//选1，进入管理员系统
case 2:Students();break;//选2，进入学生系统
case 3:w=0;break;//选3，退出
default:;
}
}
while(w==1);
return 0;
}//此部分将功能分为两个区块
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