/* Note:Your choice is C IDE */#include "stdio.h"#include "stdlib.h"#include "string.h" typedef struct student // 定义学生{char name[10];int number;char sex[2];int math;int eglish;int clanguge;int average;} student;typedef struct unit // 定义接点{student date; struct unit * next;} unit;unit * build() // 建立链表并返回指针{unit *p;if ((p =(unit * )malloc( sizeof (unit))) ==NULL) { printf( "=>初始化失败！");return 0;}else{ p-> next =NULL;p-> date . number=0; // 头结点存放学生人数printf( " 初始化成功！\n" );return p;}}void add(unit * head) // 增加学生{unit *p,*q;int m,n =0; q=head-> next;p=(unit * )malloc( sizeof (unit)); printf( "=>请输入新生姓名！\n" );gets(p ->date . name);fflush(stdin); printf( "=>请输入学号！\n" ); while (n ==0)scanf( "%d", &m);fflush(stdin);if (q ==NULL) n=1;while (q){if (q -> date . number==m){printf( "=> 你输入的学号与已有同学的学号相同，请重新输入！q\n" );=head-> next;break ;}else{q =q-> next;if (q ==NULL) n=1;}}}p-> date . number=m;printf( "=>请输入性别！\n" );gets(p -> date . sex);fflush(stdin);printf( "=>请输入数学成绩\n" ); scanf( "%d", &m);fflush(stdin);p-> date . math=m;printf( "=>请输入英语成绩\n" );scanf( "%d", &m);fflush(stdin);p-> date . eglish =m;printf( "=>请输入c语言成绩\n");scanf( "%d",&m);fflush(stdin);p-> date . clanguge =m;p-> date . average =(p -> date . math+p-> date . eglish +p->date.clanguge); q=head->next;head-> next =p;p->next =q;head->date.number++;}void deletion(unit * head) // 删除一名学生{unit * p=head-> next, * q=head ;char N[10];printf( "=>请输入你想删除的学生姓名！\n" );gets(N);fflush(stdin);if (p ==NULL)printf( "=>系统无学生可删除！\n" );while (p)if (strcmp(p -> date . name,N)==0){q-> next =p-> next; head-> date . number-- ;printf("=>删除 ％成功！ \n" ,p-> date .name); free(p);break;}else{p=p->next;q=q->next;if (p ==NULL) printf( "=>你要删除的学生不存在 , 删除失败！ \n" );}}}int display(unit *head)// 显示学生信息{unit *p=head->next;int m,n=0;char N[10];if (p ==NULL){printf( "= >系统无学生！ \n" );return 0;}while (n==0){H********************************************************************);"= >请选择你的操作！ \n" );"=>\t\t\t1. 显示所有\t2.按姓名查找\n\t\t\t3. 按学号查找\t4.返回主菜 %d",&m);fflush(stdin);switch (m){ case 1:printf( "\n=> 该系统拥有 ％名学生！ \n\n" ,head->date . number);p =head->next;printf( "\t 姓名\t 学号\t 性别\t 数学\t 英语\tc 语言\t 综合\n\n"); while (p)printf( "\t%s\t%d\t%s\t%d\t%d\t%d\t%d\n" ,p->,p->date.number,p->date.printf( **********\n" printf( printf( 单\n");scanf(IIsex,p -> date . math,p-> date . eglish,p -> date . clanguge,p ->date . average); p=p-> next;}break ;case 2:printf( "=> 请输入查找姓名！\n" );gets(N);fflush(stdin);p =head-> next;while (p){if (strcmp(p -> date . name,N)==0){printf( "\t姓名\t学号\t性别\t数学\t英语\tc语言\t综合\n");printf( "\t%s\t%d\t%s\t%d\t%d\t%d\t%d\n" ,p ->,p->date. number,p->date. sex,p -> date . math,p->date. eglish,p ->date. clanguge,p ->date . average) ; break ;}else{p=p-> next;if (p ==NULL)printf( "=>你要查的学生不存在！");}} break ;case 3: printf( "=>请输入查找学号！\n" );scanf( "%d",&m);fflush(stdin);p =head-> next;while (p){if (p->date. number==m){printf( "\t姓名\t学号\t性别\t数学\t英语\tc语言\t综合\n");printf( "\t%s\t%d\t%s\t%d\t%d\t%d\t%d\n" ,p ->,p->date. number,p->date. sex,p -> date . math,p->date. eglish,p ->date. clanguge,p ->date . average) ;break ;}else{p=p-> next;if (p ==NULL)printf( "=> 你要查的学生不存在！ \n" );}}break ;case 4:n =1; break ;}}return 1;}int range(unit * head) // 排序{unit * p=head, * q=head-> next; int n,i,m =head-> date . number;H********************************************************************printf( "\t\t\t1. 按学号 \t2.按成绩 \n\n"); printf( "=>请选择操作！ \n 》");scanf( "%d",&n);fflush(stdin);if (q ==NULL){ printf( "=>无学生可排序！ \n" ); return 0;switch (n){case 2: for (i =0;i <m;i ++)// 按总分排序 {p=head;q=head->next;while (q -> next){if ((q ->date . average) <(q -> next -> date . average)) {p->next=q->next; p=p-> next;q->next=p->next;p-> next =q;else{p=p-> next;q =q-> next; }}}break ;case 1: for (i =0;i <=m;i ++)// 按学号排序printf(********* **\n" );p=head;q =head-> next;while (q -> next){if ((q -> date . number)>(q -> next -> date .number)) {p-> next =q-> next; p=p-> next;q-> next =p-> next;p-> next =q;}else{p=p-> next;q =q-> next;}}}break ;}printf( return "=＞排序成功！ \n" ); 1;} void menu()printf( "\t\t\t1. 新建系统 \t2. 添加学生 \n\t\t\t3. 删除学生 \t4. 查看信息 \n\t\t\t5. 排列顺序 \t6.读取信息 \n\t\t\t7. 保存信息 \t8. 退出系统 \n" );printf( "=>请选择你的操作！ \n" );} int save(unit * head) // 保存{FILE *fp;unit *p;p =head;if ((fp =fopen(学生" , "wb+")) ==NULL){ printf( "=>保存失败！ ");return 0;}while (p){ fwrite( &(p -> date), sizeof (student),1,fp); p =p-> next;}printf( "=>保存成功！ "); fclose(fp);printf(主菜单 ************************************** *\n");return 1;}unit * read() // 读入系统学生信息{int i;unit *p,*q,*head;FILE *fp;if ((head =(unit * )malloc( sizeof (unit))) ==NULL) { printf( "=>开辟空间失败！");exit(1);} else{head-> next =NULL;head-> date . number=0; // 头结点存放学生人数}q=head;if ((fp =fopen( 学生" , "rb" )) ==NULL){ printf( "=> 系统无学生！\n" ); return 0;}fread( &(q -> date), sizeof (student),1,fp); for (i =0;i <head-> date . number;i ++) { if ((p =(unit * )malloc( sizeof (unit))) ==NULL) { printf( "=>读值失败！");exit(1);}fread( &(p -> date), sizeof (student),1,fp); p -> next =q-> next;q -> next =p; } fclose(fp); return head;}void main(){int m=0,n, i; unit * head;H************************************************************************printf( "=> 正在读取系统信息....... \n" );if ((head =read()) ==0)printf(******** \n\nprintf();"\t\t\t* 欢迎使用学生成绩管理系统* \n" );printf( "\n\t\t\t\t\t\t\t\t 编译员：岳英明\n\n" );printf( "=＞是否新建？\n" );printf( "\t\t\t 是( 1)\t\t 否( 2)\n" ); scanf( "%d", &i);fflush(stdin);if (i ==1)head =build();else if (i ==2) exit(1);}elseprintf( "=＞信息导入成功！");while (m==0){menu();scanf( "%d", &n);fflush(stdin);switch (n){case 1: head =build(); break ;case 2:add(head); break ;case 3:deletion(head); break ;case 4:display(head); break ;case 5: range(head); break ;case 6:head =read(); if (head!= 0) printf( "=＞读取存盘成功！\n" ); break ; case 7:save(head); break ;case 8:m =1; break ;。