C语言如何实现新生入学登记系统
今天小编给大家分享一下C语言如何实现新生入学登记系统的相关知识点,内容详细,逻辑清晰,相信大部分人都还太了解这方面的知识,所以分享这篇文章给大家参考一下,希望大家阅读完这篇文章后有所收获,下面我们一起来了解一下吧。
项目所用数据结构:链表
算法:对链表数据的增删改查操作,冒泡排序
系统架构图:
项目文件结构:
(1)system.h
#ifndef SYSTEM_H_INCLUDED#define SYSTEM_H_INCLUDED//宏定义学生信息的一种表示形式#define STUDENT_DATA pMove->studentData.studentId,pMove->studentData.name,pMove->studentData.sex,pMove->studentData.age,pMove->studentData.className,pMove->studentData.major,pMove->studentData.tel,pMove->studentData.score#define STUDENT_RANKING stuRanking[j].studentId, stuRanking[j].name, stuRanking[j].className, stuRanking[j].score,stuRanking[j].rankingstruct student{ char studentId[15]; //学号 char name[10]; char sex[4]; int age; char className[20]; //班级 char major[20]; //专业 char tel[15]; int score; //入学成绩};struct Node{ struct student studentData; struct Node* next;};struct studentRanking{ char studentId[15]; char name[10]; char className[20]; int score; int ranking;};extern struct Node* studentList; //链表的头指针#endif // SYSTEM_H_INCLUDED
(2)main.h
#ifndef MAIN_H_INCLUDED#define MAIN_H_INCLUDED#include "AddStudent.h"#include "BeginingAndEnding.h"#include "DeleteStudent.h"#include "ModifyStudent.h"#include "SearchStudent.h"#include "ShowStudent.h"#include "ShowStudentRanking.h"#include "MyList.h"#include "system.h"void showMenu();#endif // MAIN_H_INCLUDED
(3)main.c
#include <stdio.h>#include <stdlib.h>#include <conio.h> //getc函数使用的头文件#include "main.h"//主函数int main(){int selection;Int ret; Begining(); showMenu(); //展示界面 ret = scanf("%d", &selection); //读入用户输入数字getchar();While(ret != 1){ printf(“输入错误,请选择(0-6):”); ret = scanf("%d", &selection); //读入用户输入数字} while (selection) { switch (selection) { case 1: AddStudent(); //录入学生信息 break; case 2: ShowStudent(); //浏览学生信息 break; case 3: SearchStudent(); //查找学生信息 break; case 4: DeleteStudent(); //删除学生信息 break; case 5: ModifyStudent();//修改学生信息 break; case 6: ShowRanking(); //显示学生排名 break; default: printf("\t\t请输入正确的数字!\n"); } Ending(); //将链表数据写入文件 printf("|按任意键返回系统菜单|"); getch(); //接收用户输入的任意字符 system("cls"); showMenu(); ret = scanf("%d", &selection); //提示用户输入数字 getchar(); While(ret != 1){ printf(“输入错误,请选择(0-6):”); ret = scanf("%d", &selection); //读入用户输入数字} } return 0;}void showMenu(){ printf("\n\n\n\n\n"); printf("\t|--------------- 欢迎进入 ----------------|\n"); printf("\t| 新生入学登记系统 |\n"); printf("\t| 主菜单 |\n"); printf("\t| 1. 录入学生信息 |\n"); printf("\t| 2. 浏览学生信息 |\n"); printf("\t| 3. 查找学生信息 |\n"); printf("\t| 4. 删除学生信息 |\n"); printf("\t| 5. 修改学生信息 |\n"); printf("\t| 6. 新生入学排名 |\n"); printf("\t| 0. 退出系统 |\n"); printf("\t|-----------------------------------------|\n"); printf("\n"); printf("\t\t请选择(0-6):");}
(4)BeginingAndEnding.h
#ifndef BEGININGANDENDING_H_INCLUDED#define BEGININGANDENDING_H_INCLUDED//关于启动函数和结束函数void Begining();void Ending();#endif // BEGININGANDENDING_H_INCLUDED
(5)BeginingAndEnding.c
#include <stdio.h>#include <conio.h> //getc函数使用的头文件#include "system.h"#include "AboutFiles.h"#include "BeginingAndEnding.h"#include "MyList.h"void Begining(){ readInfoFromFile("studentList.txt");}void Ending(){ writeInfoToFile("studentList.txt");}
(6)MyList.h
#ifndef MYLIST_H_INCLUDED#define MYLIST_H_INCLUDED//关于链表的函数声明//创建节点struct Node* createNode(struct student data);//插入节点void insertNodeByHead(struct student data);//指定位置删除节点void deleteAppointNode(char* studentId);//查找功能struct Node* searchInfoByData(char* studentId);//打印链表void printList();#endif // MYLIST_H_INCLUDED
(7)MyList.c
#include <stdio.h>#include <conio.h> //getc函数使用的头文件#include <windows.h> //Sleep函数使用的头文件#include <string.h>//strcmp函数使用的头文#include "system.h"#include "MyList.h"struct Node* studentList = NULL; //链表的头指针//创建节点struct Node* createNode(struct student studentData){ struct Node* newNode = (struct Node*)malloc(sizeof(struct Node)); if(newNode != NULL) { newNode->studentData = studentData; newNode->next = NULL; } return newNode;}//插入节点void insertNodeByHead(struct student data){ struct Node* newNode = createNode(data); //表头法插入,每次插入都将数据插入到头节点的下一个,先判断头节点是否为空,为空则新节点就是头节点,不为空,则插入在头节点的下一个位置 if(studentList == NULL) { studentList = newNode; } else//不改变头节点 { newNode->next = studentList->next; studentList->next = newNode; }}//指定位置删除节点(知道这个节点的前驱和后续,然后进行删除)void deleteAppointNode( char* studentId){ //将链表头部设为指定位置,先判断头节点是否为空,为空则链表没有数据,无法删除 //如果头节点不为空,则设头结点为指定位置,如果头结点是所找的节点,则删除,如果不是,设头结点的下一个为指定节点,头结点为指定节点的前驱节点,一直向下查询 //指定位置 struct Node* posNode = studentList; //指定位置的前面 struct Node* posFrontNode = NULL; //查找指定节点 if(posNode == NULL) { printf("数据为空无法删除!\n"); return; } else { //姓名是字符串,不能直接比较, strcmp(), 相等返回值为0,相同返回值为负数或者正数 if(strcmp(posNode->studentData.studentId, studentId) ==0) { studentList = studentList->next; free(posNode); return; } else { posFrontNode = posNode; posNode = posNode->next; //posFrontNode = posNode; //!! while(strcmp(posNode->studentData.studentId, studentId)) { //继续向下一个节点移动 posFrontNode = posNode; posNode = posFrontNode->next; if(posNode == NULL) //找到了链表尾部,没有找到数据 { printf("未找到指定位置,无法删除!"); return; } } //查到到对应数据后,进行删除,将该节点架空,然后释放该节点的存储单元 posFrontNode->next = posNode->next; free(posNode); return; } }}//查找功能struct Node* searchInfoByData(char* studentId){ struct Node* pMove; pMove = studentList; if(pMove == NULL) //头节点为空,链表为空 { //printf("学生链表为空!\n"); return pMove; } else { // 查找到或者查找到链表最后,则结束循环,返回查询结果,结果为空,有两种可能,一种是链表中没有数据,另一种是没有查询到 while(pMove != NULL) { if(strcmp(pMove->studentData.studentId, studentId)==0)//找见 { //printf("已查找到!\n"); return pMove; } else { pMove = pMove->next; } } //printf("未找到!\n"); return pMove; }}//打印链表void printList(){ struct Node* pMove = studentList; //涉及到展示数据 //表头 if(pMove == NULL) { printf("No student record! Please add.\n"); return; } else { printf("\t-------------------------------------------------------------------------------------\n");printf("\t|%-10s |%-7s |%-4s |%-4s |%-12s |%-12s |%-12s |%-5s|\n","学号","姓名","性别","年龄","班级","专业","电话","入学成绩"); printf("\t-------------------------------------------------------------------------------------\n");while(pMove) { printf("\t|%-10s |%-7s |%-4s |%-4d |%-12s |%-12s |%-12s |%-8d|\n", STUDENT_DATA); printf("\t-------------------------------------------------------------------------------------\n"); pMove = pMove->next; } } printf("\n");}
(8)AddStudent.h
#ifndef ADDSTUDENT_H_INCLUDED#define ADDSTUDENT_H_INCLUDEDvoid AddStudent(); //录入学生信息#endif // ADDSTUDENT_H_INCLUDED
(9)AddStudent.c
#include <stdio.h>#include <conio.h> //getc函数使用的头文件#include <windows.h> //Sleep函数使用的头文件#include <string.h>//strcmp函数使用的头文#include "AddStudent.h"#include "system.h"#include "MyList.h"//录入学生信息void AddStudent(){ struct student studentData; struct Node* isNull = NULL; //接收查询的返回值 int iFlagExist; //保证不重复输入 char cFlag; int ret; //用来接收scanf的返回值,判断输入数据是否正确 system("cls"); printf("===================================【录入学生信息】===============================\n"); printf("\n请选择是否输入学生信息(y/n):"); cFlag = getchar(); getchar(); while(cFlag != 'n' && cFlag!='y') { printf("输入有误,请输入‘y'或者‘n'!"); printf("\n请选择是否输入学生信息(y/n):"); cFlag = getchar(); getchar(); } if (cFlag == 'n') return; //循环输入学生信息可输入一条也可多条输入 while (cFlag == 'y') { printf("请输入学生学号:"); do { iFlagExist = 0; gets(studentData.studentId); //对学生编号在链表中进行查询,对查询结果进行判断,如果存在则重新输入,不存在则继续 isNull = searchInfoByData(studentData.studentId); if(isNull!= NULL) //可以查询到 { printf("该学生已经存在请重新输入!\n"); printf("请输入学生学号:"); iFlagExist = 1; } } while (iFlagExist == 1); //添加学生信息 printf("请输入学生姓名:"); ret = scanf("%s",studentData.name); while(ret!=1) { printf("输入学生姓名有误,请重新输入!\n"); printf("请输入学生姓名:"); ret = scanf("%s",studentData.name); } getchar(); printf("请输入学生性别(男-M,女-F):"); //这里采用防御式编程,如果不是M,F或者没有输入该项则重新输入 while (gets(studentData.sex) != NULL) { if (strcmp(studentData.sex, "F")==0 || strcmp(studentData.sex, "M")==0) break; printf("错误,只能输入'F'或者'M',请重新输入\n"); printf("请输入学生性别(男-M,女-F):"); } printf("请输入学生年龄(15-25):"); ret = scanf("%d", &studentData.age); while((ret != 1) || studentData.age<15 || studentData.age>25) { printf("输入年龄错误,请重新输入学生年龄(15-25):"); ret = scanf("%d", &studentData.age); } getchar(); printf("请输入学生班级(eg: B电子191):"); gets(studentData.className); printf("请输入学生专业:"); gets(studentData.major); printf("请输入学生电话:"); gets(studentData.tel); printf("请输入学生入学成绩(200-750):"); ret = scanf("%d", &studentData.score); while((ret != 1) || studentData.score<200 || studentData.score>750) { printf("输入成绩信息错误,请重新输入学生入学成绩(200-750):"); ret = scanf("%d", &studentData.score); } getchar(); insertNodeByHead(studentData); fflush(stdin); printf("继续输入信息吗(y/n):"); cFlag = getchar(); getchar(); while(cFlag != 'n' && cFlag!='y') { printf("输入有误,请输入‘y'或者‘n'!"); printf("\n请选择是否输入学生信息(y/n):"); cFlag = getchar(); getchar(); } } printf("添加学生信息执行完毕!\n");}
(10)ShowStudent.h
#ifndef SHOWSTUDENT_H_INCLUDED#define SHOWSTUDENT_H_INCLUDEDvoid ShowStudent(); //查找学生信息#endif // SHOWSTUDENT_H_INCLUDED
(11)ShowStudent.c
#include <stdio.h>#include <conio.h> //getc函数使用的头文件#include <windows.h> //Sleep函数使用的头文件#include <string.h>//strcmp函数使用的头文#include "ShowStudent.h"#include "system.h"#include "MyList.h"//浏览学生信息void ShowStudent(){ system("cls"); printf("\n"); printf("\t====================================【浏览学生信息】================================\n"); printf("\n\n"); printList();}
(12)SearchStudent.h
#ifndef SEARCHSTUDENT_H_INCLUDED#define SEARCHSTUDENT_H_INCLUDEDvoid SearchStudent(); //查找学生信息#endif // SEARCHSTUDENT_H_INCLUDED
(13)SearchStudent.c
#include <stdio.h>#include <conio.h> //getc函数使用的头文件#include <windows.h> //Sleep函数使用的头文件#include <string.h>//strcmp函数使用的头文#include "SearchStudent.h"#include "system.h"#include "MyList.h"//查找学生信息void SearchStudent(){ //查询成功,则返回该学生信息,查询失败则输出提示信息,可重新输入,也可退出 struct student studentData; struct Node* pMove = NULL; //用来接收查询返回的结果 char cFlag; //接收用户的选择 system("cls"); printf("\n"); printf("\t==================================【查找学生信息】==============================\n"); printf("\t是否进行学生查询(y/n):"); cFlag = getchar(); getchar(); //接收回车键 while(cFlag != 'n' && cFlag!='y') { printf("输入有误,请输入‘y'或者‘n'!"); printf("\n请选择是否查询学生信息(y/n):"); cFlag = getchar(); getchar(); } if (cFlag == 'n') return; while(cFlag == 'y') { printf("\t请输入需要查找的学生的学号:"); //这里通过学号进行查询,学号是唯一的,姓名有重名现象 gets(studentData.studentId); pMove = searchInfoByData(studentData.studentId); if(pMove) //pMove 为真时,表示查询到 { printf("\t查询成功,以下为该学生信息:\n"); printf("\t-------------------------------------------------------------------------------------\n"); printf("\t|%-10s |%-7s |%-4s |%-4s |%-12s |%-12s |%-12s |%-5s|\n","学号","姓名","性别","年龄","班级","专业","电话","入学成绩"); printf("\t-------------------------------------------------------------------------------------\n"); printf("\t|%-10s |%-7s |%-4s |%-4d |%-12s |%-12s |%-12s |%-8d|\n", STUDENT_DATA); printf("\t-------------------------------------------------------------------------------------\n"); } else //pMove 为空时,未查询到,这里为空有两种情况,一种为学生名单为空,一种是没有查询到 { printf("\t查询失败,该学生不存在或学生列表为空!\n"); printf("\t是否重新查询(y/n):"); cFlag = getchar(); getchar(); while(cFlag != 'n' && cFlag!='y') { printf("输入有误,请输入‘y'或者‘n'!"); printf("\n是否重新查询学生信息(y/n):"); cFlag = getchar(); getchar(); } } } printf("\t学生信息查询结束!\n");}
(14)DeleteStudent.h
#ifndef DELETESTUDENT_H_INCLUDED#define DELETESTUDENT_H_INCLUDEDvoid DeleteStudent(); //删除学生信息#endif // DELETESTUDENT_H_INCLUDED
(15)DeleteStudent.c
#include <stdio.h>#include <conio.h> //getc函数使用的头文件#include <windows.h> //Sleep函数使用的头文件#include <string.h>//strcmp函数使用的头文#include "DeleteStudent.h"#include "system.h"#include "MyList.h"//删除学生信息void DeleteStudent(){ //先根据学号对该学生进行查找,查找到则删除,没有查找到则输出提示信息 struct student studentData; struct Node* pMove = NULL; //用来接收查询返回的结果 char cFlag; system("cls"); printf("\n"); printf("\t==================================【删除学生信息】==============================\n"); printf("\t请输入需要删除的学生的学号:"); gets(studentData.studentId); pMove = searchInfoByData(studentData.studentId); if(pMove) //该学生存在,进行删除 { //先对学生信息进行展示 printf("\t-------------------------------------------------------------------------------------\n"); printf("\t|%-10s |%-7s |%-4s |%-4s |%-12s |%-12s |%-12s |%-5s|\n","学号","姓名","性别","年龄","班级","专业","电话","入学成绩"); printf("\t-------------------------------------------------------------------------------------\n"); printf("\t|%-10s |%-7s |%-4s |%-4d |%-12s |%-12s |%-12s |%-8d|\n", STUDENT_DATA); printf("\t-------------------------------------------------------------------------------------\n"); printf("\t已查找到该学生信息,是否删除?(y/n)"); cFlag = getchar(); getchar(); //吃掉缓冲区的空格 while(cFlag != 'n' && cFlag!='y') { printf("输入有误,请输入‘y'或者‘n'!"); printf("\n请选择是否输入学生信息(y/n):"); cFlag = getchar(); getchar(); } if(cFlag == 'n') return; else if(cFlag == 'y') { deleteAppointNode(studentData.studentId); printf("\t已删除该学生信息!\n"); printf("\t删除操作执行结束!\n"); } } else //找到了链表的末尾,或者链表为空 { printf("\t该学生不存在!无法执行删除操作\n"); }}
(16)ModifyStudent.h
#ifndef MODIFYSTUDENT_H_INCLUDED#define MODIFYSTUDENT_H_INCLUDED#include "system.h"void ModifyStudent();//修改学生信息void ShowModifyMenu();//展示修改选项菜单void dealSelection(struct student studentData, int selection, struct Node *pMove); //处理用户选择的修改项#endif // MODIFYSTUDENT_H_INCLUDED
(17)ModifyStudent.c
#include <stdio.h>#include <conio.h> //getc函数使用的头文件#include <windows.h> //Sleep函数使用的头文件#include <string.h>//strcmp函数使用的头文#include "ModifyStudent.h"#include "system.h"#include "MyList.h"//修改学生信息void ModifyStudent(){ struct student studentData; struct Node* pMove = NULL; //对学生信息查询结果进行保存 int selection; //保存选择信息 char isContinue = 'n'; //是否继续进行修改 system("cls"); printf("\n"); printf("\t==================================【修改学生信息】==============================\n"); printf("\t请输入需要修改信息的学生的学号:"); gets(studentData.studentId); pMove = searchInfoByData(studentData.studentId); if(pMove == NULL) { printf("\t该学生信息不存在,无法进行信息修改\n"); return; } else //可修改多条学生信息,也可以只修改一条学生信息 { printf("\t-------------------------------------------------------------------------------------\n"); printf("\t|%-10s |%-7s |%-4s |%-4s |%-12s |%-12s |%-12s |%-5s|\n","学号","姓名","性别","年龄","班级","专业","电话","入学成绩"); printf("\t-------------------------------------------------------------------------------------\n"); printf("\t|%-10s |%-7s |%-4s |%-4d |%-12s |%-12s |%-12s |%-8d|\n", STUDENT_DATA); printf("\t-------------------------------------------------------------------------------------\n"); printf("\t是否进行学生信息的修改?(y/n)"); scanf("%c", &isContinue); getchar(); while(isContinue != 'n' && isContinue !='y') { printf("\t输入有误,请输入‘y'或者‘n'!"); printf("\t请选择是否修改学生信息(y/n):"); isContinue = getchar(); getchar(); } if(isContinue == 'n') return; else { while(isContinue == 'y') { //system('cls'); ShowModifyMenu(); //printf("\t请选择修改项: "); scanf("%d", &selection); getchar(); //对用户的操作选择进行处理 dealSelection(studentData,selection,pMove); fflush(stdin); printf("\t是否继续修改学生信息(y/n)?"); isContinue = getchar(); getchar(); while(isContinue != 'n' && isContinue!='y') { printf("\n输入有误,请输入‘y'或者‘n'!"); printf("\n请选择是否继续修改学生信息(y/n):"); isContinue = getchar(); getchar(); } } printf("\t学生信息修改完毕!\n"); } }}//学生信息修改菜单void ShowModifyMenu(){ printf("\n"); //printf("\t| 1.学号 |\n"); printf("\t| 1.姓名 |\n"); printf("\t| 2.性别 |\n"); printf("\t| 3.年龄 |\n"); printf("\t| 4.班级 |\n"); printf("\t| 5.专业 |\n"); printf("\t| 6.电话 |\n"); printf("\t| 7.入学成绩 |\n"); printf("\n"); printf("请输入所要修改的信息(键入相应的数字:1-7):");}//处理用户选择的修改项void dealSelection(struct student studentData, int selection, struct Node* pMove){ int ret; //用来接收scanf的返回值 switch (selection) { case 1: printf("\t请输入输入学生姓名:"); gets(studentData.name); strcpy(pMove->studentData.name, studentData.name); break; case 2: printf("\t请输入学生性别(男-M,女-F):"); while (gets(studentData.sex) != NULL) { if (strcmp(studentData.sex, "F") == 0 || strcmp(studentData.sex, "M") == 0) break; printf("\t错误,只能输入'F'或者'M',请重新输入\n"); printf("\t请输入学生性别(男-M,女-F):"); } strcpy(pMove->studentData.sex,studentData.sex); break; case 3: printf("\t请输入学生年龄(15-25):"); ret = scanf("%d", &studentData.age); while((ret != 1) || studentData.age<15 || studentData.age>25) { printf("\t输入年龄错误,请重新输入学生年龄(15-25):"); ret = scanf("%d", &studentData.age); } pMove->studentData.age = studentData.age; break; case 4: printf("\t请输入学生班级(eg:B电子191):"); gets(studentData.className); strcpy(pMove->studentData.className, studentData.className); break; case 5: printf("\t请输入学生专业:"); gets(studentData.major); strcpy(pMove->studentData.major, studentData.major); break; case 6: printf("\t请输入学生电话:"); gets(studentData.tel); strcpy(pMove->studentData.tel, studentData.tel); break; case 7: printf("\t请输入学生入学成绩(100-750):"); ret = scanf("%d", &studentData.score); while((ret != 1) || studentData.score<200 || studentData.score>750) { printf("\t输入成绩信息错误,请重新输入学生入学成绩(200-750):"); ret = scanf("%d", &studentData.score); } pMove->studentData.score = studentData.score; break; default: printf("\t\t请输入正确的数字!"); break; }}
(18)ShowStudentRanking.h
#ifndef SHOWSTUDENTRANKING_H_INCLUDED#define SHOWSTUDENTRANKING_H_INCLUDED#include "system.h"void ShowRanking(); //显示学生排名void sortByScore(struct studentRanking * stuRanking, int length);void Ranking(struct studentRanking * stuRanking, int length);#endif // SHOWSTUDENTRANKING_H_INCLUDED
(19)ShowStudentRanking.c
#include <stdio.h>#include <conio.h> //getc函数使用的头文件#include <windows.h> //Sleep函数使用的头文件#include <string.h>//strcmp函数使用的头文#include "ShowStudentRanking.h"#include "system.h"void ShowRanking(){ //*对链表中学生的成绩进行排名,并显示排名结果,排名结果括学号姓名班级专业入学成绩排名 //*排名是struct studentRanking 的一个结构体成员,在得出排名后,再进行展示 //*1.对链表中所有学生的成员进行排序,排序结果保存在student.ranking中 //重新定义一个结构体,保存排名信息并输出 //定义一个结构体数组 struct Node *pMove = NULL; struct studentRanking *stuRanking; int i, j; int length = 0; //用来保存链表的长度 system("cls"); printf("\n"); printf("\t==================================【学生排名信息】==============================\n"); if(studentList == NULL) { printf("学生登记为空,无法进行成绩排名\n"); return; } else //学生链表头指针不为空,代表学生链表中存有学生信息 { pMove = studentList; //pMove指向链表的头 //通过遍历得到链表有多少个存储单元 for(i=0; pMove != NULL; i++) { pMove = pMove->next; } length = i; printf("现有学生总人数为%d\n", length); //动态数组 stuRanking = (struct studentRanking *)malloc(length * sizeof(struct studentRanking)); if(stuRanking == NULL) return; //将需要输出的学生信息复制到结构体数组当中 pMove = studentList; for(j=0; j<length; j++) { strcpy(stuRanking[j].studentId, pMove->studentData.studentId); strcpy(stuRanking[j].name , pMove->studentData.name); strcpy(stuRanking[j].className , pMove->studentData.className); stuRanking[j].score = pMove->studentData.score; pMove = pMove->next; } //复制完成后,根据成绩对学生进行排序 sortByScore(stuRanking, length); //根据排序结果,为每名同学添加排名信息 Ranking(stuRanking, length); //展示排名 printf("排名结果如下:\n"); printf("\t-------------------------------------------------------\n"); printf("\t|%-10s |%-7s |%-12s |%-5s |%-5s|\n","学号","姓名","班级","入学成绩","全级排名"); printf("\t-------------------------------------------------------\n"); for(j=0; j<length; j++) { printf("\t|%-10s |%-7s |%-12s |%-8d |%-8d|\n", STUDENT_RANKING); printf("\t-------------------------------------------------------\n"); } } printf("输出排名信息完毕!\n"); system("pause");}//通过成绩对链表中的数据进行排序void sortByScore(struct studentRanking *stuRanking, int length){ //进行冒泡排序,从大到小排序 int i, j; struct studentRanking temp; for(i=0; i<length-1; i++) { for(j=0; j<(length-i-1); j++) { if(stuRanking[j].score < stuRanking[j+1].score)//后一项比前一项大,则交换两个存储单元中的数据,一轮排序下来,最小项就位,在列表的最末尾 { temp = *(stuRanking+j); *(stuRanking+j) = *(stuRanking+j+1); *(stuRanking+j+1) =temp; } } }}void Ranking(struct studentRanking * stuRanking, int length){ int i; for(i=1; i<=length; i++) { stuRanking[i-1].ranking = i; }}
(20)AboutFiles.h
#ifndef ABOUTFILES_H_INCLUDED#define ABOUTFILES_H_INCLUDED//链表的读取--文件读操作void readInfoFromFile(char* fileName);//链表的存储--文件写操作void writeInfoToFile(char* fileName);#endif // ABOUTFILES_H_INCLUDED
(21)ShowStudentRanking.c
#include <stdio.h>#include <conio.h> //getc函数使用的头文件#include <windows.h> //Sleep函数使用的头文件#include <string.h>//strcmp函数使用的头文#include "system.h"#include "AboutFiles.h"#include "MyList.h"//链表的读取--文件读操作void readInfoFromFile(char* fileName){ //步骤:先将信息读到data里面,再将信息读到文件里面 //1.打开文件 FILE *fp; struct student data; fp = fopen(fileName, "r"); if(fp == NULL) { fclose(fp); return NULL; } //2.读文件 //格式化读取文件,没有读到文件结束标志,则一直读下去,读到的数据插入到链表里面 else { while(fscanf(fp, "%s\t%s\t%s\t%d\t%s\t%s\t%s\t%d\n", data.studentId,data.name,data.sex,&data.age,data.className,data.major,data.tel,&data.score) != EOF) { //将文件中原来的数据插入到链表当中 insertNodeByHead(data); } //3.关闭文件, fclose(fp); }}//链表的存储--文件写操作void writeInfoToFile(char* fileName){ //1.打开文件D:\CodeBlocks\codeblocks C project\StudentSystemDemo02\studentList FILE *fp; struct Node* pMove = studentList; fp = fopen(fileName, "w"); if(fp == NULL) { //w+具有创建的功能,建立一个新文件可读可写 fp = fopen(fileName, "w+"); //可以给文件写入一个表头信息 } //2.写文件, 按格式写入操作 while(pMove != NULL) { fprintf(fp,"%s\t%s\t%s\t%d\t%s\t%s\t%s\t%d\n", STUDENT_DATA); pMove = pMove->next; } //3.关闭文件 fclose(fp);}
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