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 cou

2、rse * head1;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); 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-credit,&p1-period,p1-teacher); p1-people=0; head1=NULL; while(p

3、1-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-credit,&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,*

4、p2; N1=0; printf(请输入您要读取的路径:); getchar(); gets(filepath); if(fp=fopen(filepath,r)=NULL)printf(找不到 %s 文件!n,filepath); exit(0); p1=p2=(struct 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

5、)N1=N1+1; if(N1=1)head1=p1; else p2-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

6、录入);printf(n3.返回主菜单n);printf(请选择1-3:);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=p

7、1; p1=p1-next; if(p0-num1num1)if(head1=p1)head1=p0; elsep2-next=p0; 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=hea

8、d1) head1=p1-next; else p2-next=p1-next; printf(已删除n); N1=N1-1; else printf(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(sizeo

9、f(struct course);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-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;void putin(void) /从键盘录入学生信息 int i;struct student

10、*p1,*p2;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;else p2-next=p1;p2=p1;p1=(struct student * )malloc(sizeof(struct student);scanf(%d%s,&p1-num2,p1-name2);

11、p1-nelen=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;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);fread

12、(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 input() /录入学生信息函数 int i;printf(ttt录入学生信息n);printf(n1.从键盘录入n);printf(2.从文件录入n);prin

13、tf(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=p1-next;i

14、f(p0-num2 num2)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) head2=p1-next;else p2

15、-next=p1-next;printf(已删除n);N2=N2-1;else printf(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(sizeof(struct student);p1-nelen=0

16、;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;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;while(s-num2)!=a&s-next!=NULL) s=s-nex

17、t;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)+;(s-nelen)=(s-nelen)+(p-credit);(p-people)+;end:;voi

18、d 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-nelenumi!=b;i+);for(j=i;p-nelenumj!=0;j+)p-nelenu

19、mj=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:elect();break;case 2:back();break;case 3:break;void listc() /浏览课

20、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struct student * p;int 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)pr

21、intf(%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)printf(无法储存!);exit(0);p=head1;while(p!=NULL)fprintf(fp,%d%s%s%s%d%d

22、%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=fopen(filepath,wt)=NULL)printf(n 无法储存!);exit(0);p=head2;while(p!=NU

23、LL)fwrite(p,sizeof(struct student),1,fp);p=p-next;fclose(fp);printf(已储存入 %s文件!n,filepath);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)case(1):intoc();break;case(2):intos();break;case(3):break;void store() /信息存储

24、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;case(4):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

25、=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 student * p;printf(请输入要查找的学生姓名:);scanf(%s,name);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(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:sea