C语言学生选课系统(代码)

1、.#include#include#includeint N1,N2;struct studentint num2;char name220;int nelenum50;/所选课程编号int nelen;/所选课程学分和struct student * next;struct courseint num1;/课程编号char name120;char major20;char type20;int credit;int period;char teacher20;int people;/选此门课程的人数struct course *next;/结构体指针;struct course * hea

2、d1;struct student * head2;void zhang()/从键盘录入课程信息struct course *p1,*p2;N1=0;p1=p2=(struct course *)malloc(sizeof(struct course);.下载可编辑 .printf(课程编号 t课程名称 t主修 t课程性质 t学分 t课时 t教师n);scanf(%d%s%s%s%d%d%s,&p1-num1,p1-name1,p1-major,p1-type,&p1-cr edit,&p1-period,p1-teacher);p1-people=0;head1=NULL;while(p1-

3、num1!=0)N1=N1+1;if(N1=1)head1=p1;else p2-next=p1;p2=p1;p1=(struct course * )malloc(sizeof(struct course);scanf(%d%s%s%s%d%d%s,&p1-num1,p1-name1,p1-major,p1-type,&p1-cr edit,&p1-period,p1-teacher);p1-people=0;p2-next=NULL;void zhang1()/从文件录入课程信息FILE * fp;char filepath20;struct course *p1,*p2;N1=0;pri

4、ntf(请输入您要读取的路径 :);getchar();gets(filepath);if(fp=fopen(filepath,r)=NULL).下载可编辑 .printf(找不到 %s 文件 !n,filepath);exit(0);p1=p2=(struct course*)malloc(sizeof(struct course);fscanf(fp,%d%s%s%s%d%d%s%d,&p1-num1,p1-name1,p1-major,p1-type,& p1-credit,&p1-period,p1-teacher,&p1-people);while(!feof(fp)N1=N1+1;

5、if(N1=1)head1=p1;elsep2-next=p1;p2=p1;p1=(struct course * )malloc(sizeof(struct course);fscanf(fp,%d%s%s%s%d%d%s%d,&p1-num1,p1-name1,p1-major,p1-type,& p1-credit,&p1-period,p1-teacher,&p1-people);p2-next=NULL;void load()/录入课程信息函数int i;printf(ttt录入课程信息 n);printf(n1.从键盘录入 );printf(n2.从文件录入 );printf(n3

6、.返回主菜单 n);printf(请选择 1-3:);.下载可编辑 .scanf(%d,&i);switch(i)case 1: zhang(); break;case 2:zhang1();break;case 3:break;void insert(struct course *incourse)/增加课程信息struct course *p0,*p1,*p2;p1=head1;p0=incourse;if(head1=NULL)head1=p0;p0-next=NULL;elsewhile(p0-num1p1-num1) & (p1-next!=NULL)p2=p1;p1=p1-next

7、;if(p0-num1num1)if(head1=p1)head1=p0;elsep2-next=p0;.下载可编辑 .p0-next=p1;elsep1-next=p0;p0-next=NULL;N1=N1+1;void delc(int num1)/删除课程信息struct course *p1,*p2;if(head1=NULL)printf(n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;e

8、lsep2-next=p1-next;printf(已删除 n);.下载可编辑 .N1=N1-1;elseprintf(没有此课程 n);end:;void managementc()/课程信息管理函数struct course * p1;int i,num1;printf(ttt课程信息管理 n);printf(1.添加课程 n);printf(2.删除课程 n);printf(3.返回 n);printf(请输入 1-3:n);scanf(%d,&i);switch(i)case 1:p1=(struct course *)malloc(sizeof(struct course);prin

9、tf(课程编号 t 课程名称 t 主修 t课程性质 t 学分 t 课时 t教师n);scanf(%d%s%s%s%d%d%s,&p1-num1,p1-name1,p1-major,p1-type,&p1-credit,&p1-period,p1-teacher);p1-people=0;insert(p1); break;case 2:printf(请输入您要删除的课程编号:n);scanf(%d,&num1);delc(num1);break;case 3:break;.下载可编辑 .void putin(void)/从键盘录入学生信息int i;struct student *p1,*p2

10、;N2=0;p1=p2=(struct student *)malloc(sizeof(struct student);printf(学号 t姓名 n);scanf(%d%s,&p1-num2,p1-name2);p1-nelen=0;for(i=0;inelenumi=0;head2=NULL;while(p1-num2!=0)N2=N2+1;if(N2=1)head2=p1;elsep2-next=p1;p2=p1;p1=(struct student * )malloc(sizeof(struct student);scanf(%d%s,&p1-num2,p1-name2);p1-nel

11、en=0;for(i=0;inelenumi=0;p2-next=NULL;void putin2()/从文件录入学生信息int i=0;FILE * fp;.下载可编辑 .char filepath20;struct student *p1,*p2;N2=0;printf(请输入您要读取的路径 :);getchar();gets(filepath);if(fp=fopen(filepath,rt)=NULL)printf(找不到 %s 文件 !n,filepath);exit(0);p1=p2=(struct student*)malloc(sizeof(struct student);fr

12、ead(p1,sizeof(struct student),1,fp);head2=NULL;while(!feof(fp)i=0;N2=N2+1;if(N2=1)head2=p1;elsep2-next=p1;p2=p1;p1=(struct student * )malloc(sizeof(struct student);fread(p1,sizeof(struct student),1,fp);p2-next=NULL;void input()/录入学生信息函数int i;.下载可编辑 .printf(ttt录入学生信息 n);printf(n1.从键盘录入 n);printf(2.从文

13、件录入 n);printf(3.返回主菜单 n);printf(请输入 1-3:n);scanf(%d,&i);switch(i)case 1:putin();break;case 2:putin2();break;case 3:break;void inserts(struct student * incouse)/增加学生信息struct student *p0,*p1,*p2;p1=head2;p0=incouse;if(head2=NULL)head2=p0;p0-next=NULL;elsewhile(p0-num2p1-num2) & (p1-next!=NULL)p2=p1;p1

14、=p1-next;if(p0-num2 num2).下载可编辑 .if(head2=p1) head2=p0;else p2-next=p0;p0-next=p1;elsep1-next=p0;p0-next=NULL;N2=N2+1;void dels(int num2)/删除学生信息struct student *p1,*p2;if(head2=NULL)printf(n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)head

15、2=p1-next;else.下载可编辑 .p2-next=p1-next;printf(已删除 n);N2=N2-1;elseprintf(没有此学生编号 n);end:;void managements()/学生信息管理函数struct student * p1;int i,num2;printf(ttt学生信息管理 n);printf(1.添加学生信息 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:p1=(struct student *)malloc(size

16、of(struct student); p1-nelen=0;p1-nelenum0=0;printf(numtnamen);scanf(%d%s,&p1-num2,p1-name2);inserts(p1);break;case 2:printf(请输入您要删除的学生编号:n);scanf(%d,&num2);dels(num2); break;case 3:break;.下载可编辑 .void elect()/学生选课struct student * s;struct course * p;int a,i,b;printf(请输入您的学号 :n);scanf(%d,&a);s=head2;

17、while(s-num2)!=a&s-next!=NULL) s=s-next;if(s-num2!=a)printf(您的信息不存在，请重新输入:n);goto end;if(s-nelen)10)printf(您的学分已满 );goto end;printf(请输入您要选修的课程编号n);scanf(%d,&b);for(i=0;(s-nelenumi)=0;i+);s-nelenumi=b;p=head1;while(p-num1)!=b)p=p-next;for(i=0;(s-nelenumi)!=0;i+);s-nelenumi=b;(p-people)+;.下载可编辑 .(s-ne

18、len)=(s-nelen)+(p-credit);(p-people)+;end:;void back()/学生退课struct student * p;struct course * p1;int b,i,j,a;printf(请输入您的学号 :n);scanf(%d,&a);p=head2;while(p-num2!=a&p!=NULL) p=p-next;if(p=NULL)printf(您的信息不存在 :n);elseprintf(请输入您要退选的课程 :n);scanf(%d,&b);p1=head1;while(p1-num1!=b) p1=p1-next;for(i=0;p-n

19、elenumi!=b;i+);for(j=i;p-nelenumj!=0;j+)p-nelenumj=p-nelenumj+1;p-nelenum-j=0;(p-nelen)=(p-nelen)-(p1-credit);(p1-people)-;printf(succeed!n);void elective()/学生选课信息管理.下载可编辑 .int i;printf(ttt学生选课信息管理 n);printf(1.选课 n);printf(2.退课 n);printf(3.返回主菜单 n);printf(请输入 1-3:n);scanf(%d,&i);switch(i)case 1:elec

20、t();break;case 2:back();break;case 3:break;void listc()/浏览课程信息struct course * p;p=head1;printf(课程编号课程名称主修课程性质学分课时教师选课人数 n);while(p!=NULL)printf(%6d%13s%13s%10s%7d%7d%12s%5dn,p-num1,p-name1,p-major ,p-type,p-credit,p-period,p-teacher,p-people);p=p-next;void lists()/浏览学生信息.下载可编辑 .struct student * p;in

21、t a;p=head2;printf(学生编号学生姓名所选课程编号所选课程学分n);while(p!=NULL)printf(%6d%13s,p-num2,p-name2);printf(%6d,p-nelen);for(a=0;p-nelenuma!=0&anelenuma);printf(n);p=p-next;void intoc()/存储课程信息FILE * fp;struct course * p;char filepath30;printf(输入路径 :);getchar();gets(filepath);if(fp=fopen(filepath,w)=NULL)无法储存 !);e

22、xit(0);p=head1;while(p!=NULL).下载可编辑 .fprintf(fp,%d%s%s%s%d%d%s%dn,p-num1,p-name1,p-major,p-type ,p-credit,p-period,p-teacher,p-people);p=p-next;fclose(fp);printf(已储存入 %s文件 !n,filepath);void intos()/存储学生信息FILE * fp;struct student * p;char filepath30;printf(请输入路径 :);getchar();gets(filepath);if(fp=fope

23、n(filepath,wt)=NULL)printf(n无法储存 !);exit(0);p=head2;while(p!=NULL)fwrite(p,sizeof(struct student),1,fp);p=p-next;fclose(fp);printf(已储存入 %s 文件 !n,filepath);.下载可编辑 .void into()/信息存储函数int i;printf(ttt信息存储 n);printf(1.课程信息存储 n);printf(2.学生信息存储 tn);printf(3.返回主菜单 n);printf(请输入 1-3n);scanf(%d,&i);switch(i

24、)case(1):intoc();break;case(2):intos();break;case(3):break;void store()/信息存储浏览函数int i;printf(tt信息存储和浏览 n);printf(1.课程信息浏览 n);printf(2.学生信息浏览 n);printf(3.信息存储 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;.下载可编辑 .case(4):

25、break;void search1()/按学生编号查找学生信息int a,b;struct student * p;printf(请输入学生编号 );scanf(%d,&a);p=head2;printf(学号学生姓名所选课程编号所选课程学分 n);while(p!=NULL)if(p-num2=a)printf(%6d%13s ,p-num2,p-name2);for(b=0;p-nelenumb!=0&bnelenumb);printf(%10dn,p-nelen);p=p-next;void search2()/按学生姓名查找学生信息int b;char name20;struct s

26、tudent * p;printf(请输入要查找的学生姓名:);scanf(%s,name);p=head2;.下载可编辑 .printf(学号学生姓名所选课程编号所选课程学分 n);while(p!=NULL)if(strcmp(name,p-name2)=0)printf(%6d%13s ,p-num2,p-name2);for(b=0;p-nelenumb!=0&bnelenumb);printf(%10dn,p-nelen);p=p-next;void search()/学生信息查找主函数int i;printf(ttt学生信息查找 );printf(n1.按学号查找 );printf(n2.按姓名查找 );printf(n3.返回主菜单 );printf(n请输入 1-3:);scanf(%d,&i);switch(i)case 1:sear