学生成绩管理系统链表版C代码包含所有功能适合初学者借鉴.docx

#include stdio.h#include time.h#include string.h#include stdlib.h#include conio.h#define NULL 0typedef struct Lstu int cla,ID; long num; char name20; char sex20; float chinese,math,english; float sum,ave; Lstu *next;Lstu;Lstu *head;void Create(int n) /创建链表Lstu *p,*s;int i;for(i=0;icla); printf(请输入学号: );scanf(%ld,&p-num); printf(请输入姓名: );scanf(%s,p-name);printf(请输入性别: );scanf(%s,p-sex);printf(请输入语文成绩: );scanf(%f,&p-chinese);printf(请输入数学成绩: );scanf(%f,&p-math);printf(请输入英语成绩: );scanf(%f,&p-english);p-sum=p-chinese+p-math+p-english;p-ave=p-sum/3;head=p;if(n=1) p-next=NULL; elses=(Lstu *)malloc(sizeof(Lstu);printf(请输入第%d个人的信息n,i+1);printf(请输入班级: );scanf(%d,&s-cla); printf(请输入学号: );scanf(%ld,&s-num); printf(请输入姓名: );scanf(%s,s-name);printf(请输入性别: );scanf(%s,s-sex);printf(请输入语文成绩: );scanf(%f,&s-chinese);printf(请输入数学成绩: );scanf(%f,&s-math);printf(请输入英语成绩: );scanf(%f,&s-english);s-sum=s-chinese+s-math+s-english;s-ave=s-sum/3; p-next=s;p=s;s-next=NULL;void List() /输出链表内容 Lstu *p;int i=0; p=head; if(p=NULL)printf(Sorry,Its a Empty Listn);elseprintf(nnt-n);printf(t%-5s%-5s %-10s%-8s%-7s%-10s%-10s%-10sn,序号,班级,学号,姓名,性别,语文成绩,数学成绩,英语成绩);printf(t-n);while (p)i+;p-ID=i; printf(t %-4d%-5d %-7d %-8s%-7s%-10.2f%-10.2f%-10.2fn,p-ID,p-cla,p-num,p-name,p-sex,p-chinese,p-math,p-english); printf(t-n); p=p-next; void list() /输出链表所有内容 Lstu *p;int i=0; p=head; if(p=NULL)printf(Sorry,Its a Empty Listn);elseprintf(n -n);printf( %-5s%-5s %-7s %-8s%-7s%-10s%-10s%-10s%-8s%-8sn,序号,班级,学号,姓名,性别,语文成绩,数学成绩,英语成绩,总分,平均分);printf( -n);while (p)i+;p-ID=i; printf( %-4d%-6d%-12d%-8s%-7s%-10.2f%-10.2f%-10.2f%-8.2f%-8.2fn,p-ID,p-cla,p-num,p-name,p-sex, p-chinese,p-math,p-english,p-sum,p-ave); printf( -n); p=p-next; void save() /文件保存 FILE *fp; Lstu *p; p=head; if(fp=fopen(初始值二进制.txt,wb)=NULL) printf(Cannot open the file ); exit(0); while(p) fwrite(p,sizeof(Lstu),1,fp); p=p-next; fclose(fp);void save1() /文件保存 FILE *fp; Lstu *p; p=head; if(fp=fopen(初始值二进制备用.txt,wb)=NULL) printf(Cannot open the file ); exit(0); while(p) fwrite(p,sizeof(Lstu),1,fp); p=p-next; fclose(fp);void read() /文件读取 FILE *fp; Lstu *p,*p1; if(fp=fopen(初始值二进制.txt,rb)=NULL) printf(Cannot open the filen); exit(0); head=(Lstu*)malloc(sizeof(Lstu); p1=head; while(!feof(fp) p=(Lstu *)malloc(sizeof(Lstu); if(fread(p,sizeof(Lstu),1,fp)=1) p1-next=p; p1=p1-next; head=head-next;fclose(fp);void read1() /文件读取 FILE *fp; Lstu *p,*p1; if(fp=fopen(初始值二进制备用.txt,rb)=NULL) printf(Cannot open the filen); exit(0); head=(Lstu*)malloc(sizeof(Lstu); p1=head; while(!feof(fp) p=(Lstu *)malloc(sizeof(Lstu); if(fread(p,sizeof(Lstu),1,fp)=1) p1-next=p; p1=p1-next; head=head-next;fclose(fp);void SAVE() /保存到可浏览文件 FILE *fp; Lstu *p;int i=0; p=head; if(fp=fopen(初始值可浏览文件.txt,w+)=NULL) printf(Cannot open the file ); exit(0); fprintf(fp,nnt-n); fprintf(fp,t%-5s%-5s %-10s%-8s%-7s%-10s%-10s%-10sn,序号,班级,学号,姓名,性别,语文成绩,数学成绩,英语成绩); fprintf(fp,t-nn);while(p) i+;p-ID=i; fprintf(fp,t %-4d%-5d %-7d %-8s%-7s%-10.2f%-10.2f%-10.2fn,p-ID,p-cla,p-num,p-name, p-sex,p-chinese,p-math,p-english); fprintf(fp,t-n); p=p-next; fclose(fp);void SAVE1() /保存到可浏览文件 FILE *fp;char filename20; Lstu *p;int i=0; p=head; printf(请输入保存到可浏览文件的文件名: ); scanf(%s,filename); if(fp=fopen(filename,w+)=NULL) printf(Cannot open the file ); exit(0); fprintf(fp,n -n); fprintf(fp, %-5s%-5s %-7s %-8s%-7s%-10s%-10s%-10s%-8s%-8sn,序号,班级,学号,姓名,性别,语文成绩,数学成绩,英语成绩,总分,平均分); fprintf(fp, -n);while(p) i+;p-ID=i; fprintf(fp, %-4d%-5d %-7d %-8s%-7s%-10.2f%-10.2f%-10.2f%-8.2f%-8.2fn,p-ID,p-cla,p-num,p-name,p-sex, p-chinese,p-math,p-english,p-sum,p-ave); fprintf(fp,-n); p=p-next; fclose(fp);void sort_data_copy(Lstu *p,Lstu *s) /交换排序时的值int cla1;cla1=p-cla;p-cla=s-cla;s-cla=cla1;long num1;num1=p-num;p-num=s-num;s-num=num1;char name120;strcpy(name1,p-name);strcpy(p-name,s-name);strcpy(s-name,name1);char sex120;strcpy(sex1,p-sex);strcpy(p-sex,s-sex);strcpy(s-sex,sex1);float chinese1;chinese1=p-chinese;p-chinese=s-chinese;s-chinese=chinese1;float math1;math1=p-math;p-math=s-math;s-math=math1;float english1;english1=p-english;p-english=s-english;s-english=english1;float sum1;sum1=p-sum;p-sum=s-sum;s-sum=sum1;float ave1;ave1=p-ave;p-ave=s-ave;s-ave=ave1;void sort() /对初始成绩进行排序Lstu *p,*s;int n;char a;read();p=head;if(p=NULL)printf(Sorry,Its a Empty Listn);printf(n按Enter键继续n);a=getch();elsewhile(1)system(cls);printf(n排序前结果为:n);read();list(); printf(t *=*=*=*=*=*=*=*=*=*=*=按学号排序(1)n); printf(t *=*=*=*=*=*=*=*=*=*=*=按语文成绩排序(2)n);printf(t *=*=*=*=*=*=*=*=*=*=*=按数学成绩排序(3)n);printf(t *=*=*=*=*=*=*=*=*=*=*=按英语成绩排序(4)n); printf(t *=*=*=*=*=*=*=*=*=*=*=按平均分排序(5)n);printf(t *=*=*=*=*=*=*=*=*=*=*=回主菜单(0)nn);printf(t请输入选择: ); scanf(%d,&n); for(p=head;p-next!=NULL;p=p-next)for(s=p-next;s!=NULL;s=s-next) switch(n) case 1: if(p-nums-num)sort_data_copy(p,s);break;case 2: if(p-chinesechinese)sort_data_copy(p,s);break;case 3: if(p-mathmath)sort_data_copy(p,s);break;case 4: if(p-englishenglish)sort_data_copy(p,s);break;case 5: if(p-aves-ave)sort_data_copy(p,s);break;case 0: break;default : printf(chooe error!);break;if(n=0)printf(n按Enter键回主菜单n);a=getch();break;elseprintf(排序后结果为:n);list();SAVE1();printf(n按Enter键继续n);a=getch();void sort1() /对所有数据进行排序Lstu *p,*s;int n;char a;read1();p=head;if(p=NULL)printf(Sorry,Its a Empty Listn);printf(n按Enter键继续n);a=getch();elsewhile(1)system(cls);printf(n排序前结果为:n);read1();list(); printf(t *=*=*=*=*=*=*=*=*=*=*=按学号排序(1)n); printf(t *=*=*=*=*=*=*=*=*=*=*=按语文成绩排序(2)n);printf(t *=*=*=*=*=*=*=*=*=*=*=按数学成绩排序(3)n);printf(t *=*=*=*=*=*=*=*=*=*=*=按英语成绩排序(4)n); printf(t *=*=*=*=*=*=*=*=*=*=*=按平均分排序(5)n);printf(t *=*=*=*=*=*=*=*=*=*=*=回主菜单(0)nn);printf(t请输入选择: ); scanf(%d,&n); for(p=head;p-next!=NULL;p=p-next)for(s=p-next;s!=NULL;s=s-next) switch(n) case 1: if(p-nums-num)sort_data_copy(p,s);break;case 2: if(p-chinesechinese)sort_data_copy(p,s);break;case 3: if(p-mathmath)sort_data_copy(p,s);break;case 4: if(p-englishenglish)sort_data_copy(p,s);break;case 5: if(p-aves-ave)sort_data_copy(p,s);break;case 0: break;default : printf(chooe error!);break;if(n=0)printf(n按Enter键回主菜单n);a=getch();break;elseprintf(排序后结果为:n);list();SAVE1();printf(n按Enter键继续n);a=getch();void search_print(Lstu *p) /输出查找信息printf(t-n);printf(t%-5s %-7s %-8s%-7s%-10s%-10s%-10sn,班级,学号,姓名,性别,语文成绩,数学成绩,英语成绩);printf(t-n);printf(t%-5d %-7d %-8s%-7s%-10.2f%-10.2f%-10.2fn,p-cla,p-num,p-name,p-sex,p-chinese,p-math,p-english);printf(t-n);void search_choose() /选择按分数段查找方式Lstu *p;int n,i=1,flag=0;float a,b;p=head;printf(t*=*=*=*=*=*=*=*=*=*=*=按语文分数段查找(1)n);printf(t*=*=*=*=*=*=*=*=*=*=*=按数学分数段查找(2)n);printf(t*=*=*=*=*=*=*=*=*=*=*=按英语分数段查找(3)nn);printf(t请输入选择: );scanf(%d,&n);printf(请输入分数下限(包括输入的分数): ); scanf(%f,&a);printf(请输入分数上限(包括输入的分数): );scanf(%f,&b); switch(n) case 1: while(p) if(p-chinese)=a&(p-chinese)next; if(flag=0) printf(没有此分数段的同学!n); elseprintf(您所查找的同学信息如下:n); printf(t-n); printf(t%-5s %-7s %-8s%-7s%-10s%-10s%-10sn,班级,学号,姓名,性别,语文成绩,数学成绩,英语成绩);p=head;printf(t-n); while(p) if(p-chinese)=a&(p-chinese)cla,p-num,p-name,p-sex,p-chinese,p-math,p-english); printf(t-n); p=p-next; break;case 2: while(p) if(p-chinese)=a&(p-math)next; if(flag=0) printf(没有此分数段的同学!n); elseprintf(您所查找的同学信息如下:n); printf(t-n); printf(t%-5s %-7s %-8s%-7s%-10s%-10s%-10sn,班级,学号,姓名,性别,语文成绩,数学成绩,英语成绩);printf(t-n);p=head; while(p) if(p-chinese)=a&(p-math)cla,p-num,p-name,p-sex,p-chinese,p-math,p-english); printf(t-n); p=p-next;break; case 3: while(p) if(p-chinese)=a&(p-english)next; if(flag=0) printf(没有此分数段的同学!n); elseprintf(您所查找的同学信息如下:n); printf(t-n); printf(t%-5s %-7s %-8s%-7s%-10s%-10s%-10sn,班级,学号,姓名,性别,语文成绩,数学成绩,英语成绩);printf(t-n);p=head; while(p) if(p-chinese)=a&(p-english)cla,p-num,p-name,p-sex,p-chinese,p-math,p-english); printf(t-n); p=p-next;break; default : printf(chooe error!);break; void search() /查找Lstu *p;int n;long m;char str20;p=head;if(p=NULL)printf(Sorry,Its a Empty Listn);elseprintf(nnt*=*=*=*=*=*=*=*=*=*=*=按学号查找(1)n);printf(t*=*=*=*=*=*=*=*=*=*=*=按姓名(2)n);printf(t*=*=*=*=*=*=*=*=*=*=*=分数段查找(3)nn);printf(t请输入选择: );scanf(%d,&n);switch(n) case 1: printf(请输入学号: ); scanf(%ld,&m); if(p-num=m) printf(您所查找的同学信息如下:n); search_print(p); else while(p-next!=NULL&p-next-num!=m)p=p-next; if(p-next=NULL)printf(It havent this numbern); else printf(您所查找的同学信息如下:n); search_print(p-next);break;case 2: printf(请输入姓名: ); scanf(%s,str); if(strcmp(p-name,str)=0) printf(您所查找的同学信息如下:n); search_print(p); else while(p-next!=NULL&strcmp(p-next-name,str)!=0)p=p-next; if(p-next=NULL)printf(It havent this namen); else printf(您所查找的同学信息如下:n); search_print(p-next);break; case 3: search_choose();break; default : printf(chooe error!);break; void modify_choose(Lstu *p,int n) /选择修改方式Lstu *s;printf(t*=*=*=*=*=*=*=*=*=*=*=修改语文成绩(1)n);printf(t*=*=*=*=*=*=*=*=*=*=*=修改数学成绩(2)n);printf(t*=*=*=*=*=*=*=*=*=*=*=修改英语成绩(3)n);printf(t*=*=*=*=*=*=*=*=*=*=*=修改所有成绩(4)n);printf(t*=*=*=*=*=*=*=*=*=*=*=回主菜单(0)nn);printf(t请输入选择: );scanf(%d,&n);s=(Lstu *)malloc(sizeof(Lstu);switch(n) case 1: printf(请输入新的语文成绩: ); scanf(%f,&s-chinese); p-chinese=s-chinese;break; case 2: printf(请输入新的数学成绩: ); scanf(%f,&s-math); p-math=s-math;break; case 3: printf(请输入新的英语成绩: ); scanf(%f,&s-english); p-english=s-english;break; case 4: printf(请输入新的语文成绩: ); scanf(%f,&s-chinese); printf(请输入新的数学成绩: ); scanf(%f,&s-math); printf(请输入新的英语成绩: ); scanf(%f,&s-english); p-chinese=s-chinese; p-math=s-math; p-english=s-english;break; default : printf(chooe error!);break;void modify() /按姓名修改Lstu *p;int n;char str20;p=head;if(p=NULL)printf(Sorry,Its a Empty Listn);elseprintf(修改前信息如下:n);List();printf(请输入你将修改成绩人的姓名: );scanf(%s,str);if(strcmp(p-name,str)=0)modify_choose(p,n);printf(修改后信息如下:n);List();elsewhile(p-next!=NULL&strcmp(p-next-name,str)!=0)p=p-next; if(p-next=NULL)printf(Its a error namen);elsemodify_choose(p-next,n);printf(修改后信息如下:n);List();void Insert() /按序号插入int n,i=0; Lstu *p,*s;p=head;if(p=NULL)printf(Sorry,Its a Empty Listn);elseprintf(插入前信息如下:n);List();printf(请输入你将插入信息放置位置的序号: ); scanf(%d,&n);while(p)p=p-next;i+;if(ni+1)printf(输入位置序号错误!n);elseprintf(请输入你要插入的信息n); s=(Lstu *)malloc(sizeof(Lstu); printf(请输入班级: );scanf(%d,&s-cla); printf(请输入学号: );scanf(%ld,&s-num); printf(请输入姓名: );scanf(%s,s-name); printf(请输入性别: );scanf(%s,s-sex); printf(请输入语文成绩: );scanf(%f,&s-chinese); printf(请输入数学成绩: );scanf(%f,&s-math); printf(请输入英语成绩: );scanf(%f,&s-english); s-sum=s-chinese+s-math+s-english;s-ave=s-sum/3; if(n=1) p=head;head=s;s-next=p; printf(插入后信息如下:n);List(); elsep=head; while(p-next!=NULL&p-next-ID!=n)p=p-next; s-next=p-next;p-next=s; printf(插入后信息如下:n);List();void del() /按姓名删除char str20; Lstu *p,*q;p=head;printf(nn请输入你要删除人的姓名n);scanf(%s,str); if(p=NULL) printf(Sorry,Its a Empty Listn);if(strcmp(p-name,str)=0) printf(您要删除人信息如下:n);search_print(p); head=p-next; printf(删除后信息如下:n);List();elsep=head;while(p-next!=NULL&strcmp(p-next-name,str)!=0)p=p-next; if(p-next=NULL)printf(Its a error namen);elseprintf(您要删除人信息如下:n);search_print(p-next); q=p-next;p-next=q-next; free(q); printf(删除后信息如下:n);List();void statistics()system(cls);printf(nn全部成绩统计如下:nn);Lstu *p=head;int n=0,i;float sum,average,a;while(p)n+;p=p-next;printf(t全部共有%d个人nnn,n);p=head;sum=0;i=0;while(p)sum=sum+p-chinese;if(p-chinesenext;average=sum/n;a=(float(n)-float(i)/float(n);printf(t语文平均分为: %-7.2fnn,average);printf(t共有%d个人语文不及格nn,i);printf(t及格率为%.2f%snnn,a*100,%);p=head;sum=0;i=0;while(p)sum=sum+p-math;if(p-mathnext;average=sum/n;a=(float(n)-float(i)/float(n);printf(t数学平均分为: %-7.2fnn,average);printf(t共有%d个人数学不及格nn,i);printf(t及格率为%.2f%snnn,a*100,%);p=head;sum=0;i=0;while(p)sum=sum+p-english;if(p-englishnext;average=sum/n;a=(float(n)-float(i)/float(n);printf(t英语平均分为: %-7.2fnn,average);printf(t共有%d个人英语不及格nn,i);printf(t及格率为%.2f%snnn,a*100,%);int menu() /菜单 int a; time_t rawtime; struct tm * timeinfo; time ( &rawtime