学生选课系统代码

1、共享知识分享快乐#in clude#in cludeint N1,N2,kk1,kk2,kk3;struct couse * headl;struct stude nt * head2;struct couseint nu ml;char name120;int score;int n elepeo;int Melepeo;struct couse * n ext;struct stude ntint nu m2;char name220;int n ele nu m50;int n ele n;struct stude nt * n ext;void Ms()for(kk 1=O;kk111

2、OO;kk1+)for(kk2=0;kk21200;kk2+)for(kk3=0;kk3 num1,p1- namel,&p1-score, &p1-Melepeo);p1- n elepeo=0;head 仁NULL;while(p1- nu m1!=0)N1=N1 + 1;if(N1=1)head 1= p1;else p2-n ext=p1;p2=p1;p1=(struct couse * )malloc(sizeof(struct couse);sca nf(%d%s%d%d, &p1- nu m1,p1- name1,&p1-score, &p1-Melepeo);p1- n ele

3、peo=0;p2- next=NULL;void filec()FILE * fp;char filepath20;struct couse *p1,*p2;N1=0;printf(”输入要读入的文件路径:);getchar();gets(filepath);if(fp=fope n(filepath,r)=NULL)printf(” 找不到 %s 文件!n,filepath);exit(0);p1=p2=(struct couse*)malloc(sizeof(struct couse);fscan f(fp,%d%s%d%d%d,&p1- num1,p1- namel,&p1-score,

4、&p1- nelepeo,&p1-Melepeo); head 仁NULL;while(!feof(fp)2= N1+1;if(N1=1)head 1= p1;else p2-n ext=p1;p2=p1;p1=(struct couse * )malloc(sizeof(struct couse);fscan f(fp,%d%s%d%d%d,&p1- num1,p1- namel,&p1-score,&p1- nelepeo,&p1-Melepeo);p2- next=NULL;void in putc()int i;printf(ttt 录入课程信息 n);printf(n1.从键盘录入

5、n”);printf(2.从文件录入n);printf(3.返回主菜单n);printf(” 请选择(13):n);scan f(%d, &i);switch(i)case(1):keyboardc();break;case(2):filec();break;case(3):break;void in sertc(struct couse *in couse)struct couse *p0,*p1,*p2;p1=head1;pO=in couse;if(head 1=NULL)head1=p0;p0- next=NULL;elsewhile(pO-num1 p1-numl) & (p1-ne

6、xt!=NULL)p2=p1;p1=p1- n ext;if(p0-num1 nu ml)if(head1=p1) head1=p0;else p2-n ext=p0;pO_n ext=p1;elsep1- n ext=p0;p0- next=NULL;N1=N1 + 1;void delc(i nt nu ml)struct couse *p1,*p2;if(head 1=NULL)printf(n没有课程，无法删除!n);goto end;p1=headl;while(num1!=p1-numl & p1-next!=NULL)p2=p1;p1=p1- n ext;if(nu m1=p1-

7、 nu m1)if(p1=head1) head仁p1- n ext;else p2-n ext=p1- n ext;printf(”已删除该编号课程!n);N1=N1-1;else printf(无该编号的课程!n);en d:;void man ageme ntc()struct couse * in couse;in t i, nu m1;printf(ttt 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(13):n);sca nf(%d,&i);switch(i)case(1):in c

8、ouse=(struct couse *)malloc(sizeof(struct couse);printf(”课程编号t课程名称t学分t课程人数上限n);sca nf(%d%s%d%d,&in couse-nu m1,i ncouse-n ame1,&in couse-score，&in couse-Melepeo); in couse-n elepeo=0;in sertc(i ncouse);break;case(2):printf(”请输入要删除课程的编号:n);sea nf(%d,&nu ml);delc( nu ml);break;case(3):break;void keybo

9、ards()int i;struct stude nt *p1,*p2;N2=0;p1=p2=(struct stude nt *)malloc(sizeof(struct stude nt); printf(”学生学号t学生姓名n);sca nf(%d%s,&p1- nu m2,p1- name2);p1- n ele n=0;for(i=0;inelenumi=0;head2=NULL;while(p1- nu m2!=0)N2=N2+1;if(N2=1)head2=p1;else p2-n ext=p1;p2=p1;p1=(struct stude nt * )malloc(sizeof

10、(struct stude nt);sca nf(%d%s,&p1- nu m2,p1- name2);p1- n ele n=0;for(i=0;i nele numi=0;p2- next=NULL;void files()int i=0;FILE * fp;char filepath20;struct stude nt *p1,*p2;N2=0;printf(”输入要读入的文件路径:);getchar();gets(filepath);if(fp=fope n(filepath,r)=NULL)printf(” 找不到 %s 文件!n,filepath);exit(O);p1=p2=(s

11、truct stude nt*)malloc(sizeof(struct stude nt); fread(p1,sizeof(struct stude nt),1,fp);head2=NULL;while(!feof(fp)i=0;N2=N2+1;if(N2=1)head2=p1;else p2-n ext=p1;p2=p1;p1=(struct stude nt * )malloc(sizeof(struct stude nt); fread(p1,sizeof(struct stude nt),1,fp);p2- next=NULL;void in puts()int i;printf(

12、ttt 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(13):n);sca nf(%d,&i);switch(i)case(1):keyboards();break;case(2):files();break;case(3):break;void in serts(struct stude nt * in couse)struct stude nt *p0,*p1,*p2;p1=head2;pO=in couse;if(head2=NULL)head2=p0;p0- next=NULL;e

13、lsewhile(pO-num2 p1-num2) & (p1-next!=NULL)p2=p1；p1=p1- n ext;if(p0-num2 num2)if(head2=p1) head2=p0;else p2-n ext=p0;pO_n ext=p1;elsep1- n ext=pO;p0- next=NULL;N2=N2+1;void dels(i nt nu m2)struct stude nt *p1,*p2;if(head2=NULL)printf(n没有该学生信息，无法删除!n);goto end;p1=head2;while (n um2!=p1- num2 & p1- ne

14、xt!=NULL)p2=p1;p1=p1- n ext;if(nu m2=p1- nu m2)if(p1=head2) head2=p1- n ext;else p2-n ext=p1- n ext;printf(”已删除该学生信息!n);N2=N2-1;else printf(无该学号的学生!n);en d:;void man ageme nts()struct stude nt * in couse;in t i, nu m2;printf(ttt 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

15、(” 请选择(13):n);sca nf(%d,&i);switch(i)case(1):in couse=(struct stude nt *)malloc(sizeof(struct stude nt);in couse-n ele n=0;in couse-n ele num0=0;printf(”学生学号t学生姓名n);sca nf(%d%s,&in couse-nu m2,i ncouse-n ame2);in serts(i ncouse);break;case(2):printf(”请输入要删除学生的学号:n);sca nf(%d,&nu m2);dels( nu m2);bre

16、ak;case(3):break;void elect(struct stude nt * s)struct couse * p;int nu m1,i;printf(”请输入要选课的编号:n);sca nf(%d,&nu ml);for(i=0;s-n ele nu mi!=0;i+);s-n ele nu mi=nu ml;(s_n ele n)+;p=head1;while(p-nu ml!=nu ml) p=p-n ext;(p-n elepeo)+;void cheak()char e;struct couse * c;struct stude nt * s;int nu m2,i,

17、j=0,t=0;printf(”请输入你的学号:);sca nf(%d,&nu m2);s=head2;while(s- nu m2!=num2 & s- next!=NULL) s=s- next; if(s-nu m2!=nu m2)!n);printf(”不存在你的信息，请进入主菜单录入你的信息 goto end;c=head1;printf(你的可选课程编号:n);while(c!=NULL)for(t=0,i=0;s-n ele nu mi!=0;i+)if(c-nu m1=s-n ele nu mi) t=1;if(t=0 & (c-n elepeo!=c-Melepeo)prin

18、 tf(%dn,c- nu m1);j+;c=c- n ext;if(j=0)printf(你已选完所有课程，无法再多选!n);goto end;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();en d:;void back(struct stude nt * p)struct couse * p1;int nu m1,i,j;printf(”请输入你要退掉的课程编号:n);sca nf(%d,&nu ml);p1=hea

19、d1;while(p1- nu ml!=nu ml) p1=p1- n ext;for(i=0;p- nele nu mi!=nu m1;i+);for(j=i;p-n ele nu mj!=O;j+) p_n ele nu mj=p_ n ele nu mj+1; p_n ele num _-j=0;(p1- n elepeo)-;printf(” 退课成功!n);void hcheak()char c;struct couse * p0;struct stude nt * p;int nu m2,i,f=0;printf(”请输入学号:n);sca nf(%d,&nu m2);p=head

20、2;while(p- nu m2!=num2 & p!=NULL) p=p-n ext;if(p=NULL)printf(”不存在你的信息，请回主菜单录入信息:n);goto end;printf(”已选课程编号:n);if(p-n ele num0=0)printf(你还没选课!n);goto end;for(i=0;p-n ele nu mi!=0;i+)prin tf(%dn,p- nele nu mi);p0=head1;while(pO-nu m1!=p-n ele nu mi) pO=pO-n ext;f=f+pO_score;printf(” 总学分：dn”,f);printf(

21、”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-n ele n)en d:;void elective()int i;printf(ttt 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(13):n);sca nf(%d,&i);switch(i)case(1):cheak();break;case(2):hcheak();break;case(3):break;

22、void listc()struct couse * 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)prin tf(%-8d%10s%6d%8d%12dn,p- num1,p- name1,p-score,p- nelepeo,p-Melepeo);p=p-n ext;void lists()struct stude nt * p;p=head2;printf(”学生学号学生姓名已选课程数量n);while(p!=NULL)prin tf(%-4d %10s %6dn,p- num2,p- name2,p- nele n);p

23、=p-n ext;void in toc()FILE * fp;struct couse * p;char filepath30;printf(”输入课程信息要保存的文件路径：”)；getchar();gets(filepath);if(fp=fope n(filepath,w)=NULL)printf(n 保存失败!);exit(0);p=head1;while(p!=NULL)fprin tf(fp,%d %s %d %d %dn ”,p-nu m1,p-n ame1,p-score,p-n elepeo,p-Melepeo); p=p-n ext;fclose(fp);printf(”课

24、程信息已保存在 %s中!n,filepath);void in tos()FILE * fp;struct stude nt * p;char filepath30;printf(”输入学生信息要保存的文件路径：”)；getchar();gets(filepath);if(fp=fope n(filepath,w)=NULL)printf(n 保存失败!);exit(0);p=head2;while(p!=NULL)fWrite(p,sizeof(struct stude nt),1,fp); p=p-n ext;fclose(fp);printf(学生信息已保存在 %s中!n”,filepath);void in to()int i;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(13)n);sca nf(%d,&i);switch(i)case(1):i ntoc();break;case(2):i ntos();break;case(3):break;void store()int i;printf(tt系统信息查看及存储n);pri