c语言程序设计课程学籍管理系统源代码

C语言学生管理系统代码
简介
学生管理系统是一个用于管理学生信息的简单程序，它可以实现添加学生信息、显示学生信息、修改学生信息和删除学生信息等功能。

通过这个系统，学校或机构可以更方便地管理和维护学生的相关数据。

功能
1.添加学生信息：通过输入学生的姓名、学号、年龄和性别等信息，将
学生信息存储在系统中。

每个学生信息包括学号、姓名、年龄和性别等关键信息。

2.显示学生信息：可以显示系统中所有学生的信息，包括学号、姓名、
年龄和性别。

3.修改学生信息：通过输入学生的学号，可以修改该学生的姓名、年龄
和性别等信息。

4.删除学生信息：通过输入学生的学号，可以删除该学生的信息。

实现
下面是一个简单的C语言学生管理系统代码示例：
```c #include <stdio.h> #include <string.h>
#define MAX_STUDENTS 100
// 定义学生结构体 struct Student { int id; char name[100]; int age; char
gender[10]; };
// 定义全局变量，用于存储学生信息和统计学生数量 struct Student
students[MAX_STUDENTS]; int num_students = 0;
// 添加学生 void addStudent() { if (num_students >= MAX_STUDENTS) { printf(。

c语言学籍管理系统源代码学籍管理系统的背景及意义随着社会的不断发展和教育的普及，学籍管理工作日益被重视。

传统的手工管理学籍的方式效率低下，存在着各种弊端，以致无法满足现代学校管理的需求。

因此，开发一款高效、便捷、可靠的学籍管理系统成为普遍需求，为了提高管理效率、减少工作难度，学籍管理系统被越来越广泛地使用。

本文将介绍一款基于C语言开发的学籍管理系统的源代码。

基本功能该学籍管理系统可以实现学生信息的录入、删除、修改和查询，以及学生的成绩录入、修改和查询。

此外，该系统还具备数据存储和文件读写的功能，能够自动保存学生信息和成绩数据，保障数据的安全性和可靠性。

模块设计该系统按照功能模块划分，主要分为三个模块：学生信息管理模块、学生成绩管理模块和数据存储与文件读写模块。

学生信息管理模块该模块主要实现学生信息的录入、删除、修改和查询等基本功能。

以下为该模块的主要源代码：```struct student {char name[20]; // 姓名int id; // 学号char sex[5]; // 性别char major[20]; // 专业};struct student stu[1000]; // 学生信息结构体数组int num_of_stu = 0; // 学生总数void add_student() { // 添加学生信息printf("请输入学生姓名:");scanf("%s", stu[num_of_stu].name);printf("请输入学生学号:");scanf("%d", &stu[num_of_stu].id);printf("请输入学生性别:");scanf("%s", stu[num_of_stu].sex);printf("请输入学生专业:");scanf("%s", stu[num_of_stu].major);num_of_stu++;printf("添加成功！\n");}void delete_student() { // 删除学生信息int delete_id;printf("请输入要删除的学生学号:");scanf("%d", &delete_id);int index = search_student_by_id(delete_id); if (index == -1) {printf("该学号不存在！\n");return;}for (int i = index; i < num_of_stu - 1; i++) { stu[i] = stu[i + 1];}num_of_stu--;printf("删除成功！\n");}void modify_student() { // 修改学生信息int modify_id;printf("请输入要修改的学生学号:");scanf("%d", &modify_id);int index = search_student_by_id(modify_id); if (index == -1) {printf("该学号不存在！\n");return;}printf("请输入学生姓名:");scanf("%s", stu[index].name);printf("请输入学生学号:");scanf("%d", &stu[index].id);printf("请输入学生性别:");scanf("%s", stu[index].sex);printf("请输入学生专业:");scanf("%s", stu[index].major);printf("修改成功！\n");}int search_student_by_id(int id) { // 根据学号查询学生信息for (int i = 0; i < num_of_stu; i++) {if (stu[i].id == id) {return i;}}return -1;}void query_student() { // 查询学生信息int query_id;printf("请输入要查询的学生学号:");scanf("%d", &query_id);int index = search_student_by_id(query_id);if (index == -1) {printf("该学号不存在！\n");return;}printf("姓名\t学号\t性别\t专业\n");printf("%s\t%d\t%s\t%s\n", stu[index].name,stu[index].id, stu[index].sex, stu[index].major);}```学生成绩管理模块该模块主要实现学生成绩信息的录入、修改和查询等功能。

课程信息管理系统源代码#include<stdio.h>#include<stdlib.h>#include<string.h>struct Class{int Number;int ClassNumber;char Name[10];float TeachTime;float PracticeTime;float Credit;char Semester[10];char TextWay[10];} Class[10],CL;/**********输入模块***********/void save()//定义函数save，向文件输出课程信息{FILE *fp;int i;if ((fopen("Class.txt", "r")) == NULL)//打开输出文件Class fp = fopen("Class.txt", "w+");elsefp = fopen("Class.txt", "r+");for (i = 0; i<10; i++){fprintf(fp, "%d", Class[i].Number);fputc('\n', fp);fprintf(fp, "%d", Class[i].ClassNumber);fputc('\n', fp);fprintf(fp, "%s", Class[i].Name);fputc('\n', fp);fprintf(fp, "%f",Class[i].TeachTime);fputc('\n', fp);fprintf(fp, "%f", Class[i].PracticeTime);fputc('\n', fp);fprintf(fp, "%f", Class[i].Credit);fputc('\n', fp);fprintf(fp, "%s", Class[i].Semester);fputc('\n', fp);fprintf(fp, "%s", Class[i].TextWay);fputc('\n', fp);}fclose(fp);}void Input(){int i = 0;char c;for (int t = 1; t;i++){printf("请输入要输入的课程的相关信息：\n");printf("请输入记录编号:");scanf("%d", &Class[i].Number);printf("请输入课程编号:");scanf("%d", &Class[i].ClassNumber);printf("请输入课程名:");scanf("%s", Class[i].Name);printf("请输入讲课学时:");scanf("%f", &Class[i].TeachTime);printf("请输入实践学时:");scanf("%f", &Class[i].PracticeTime);Class[i].Credit = (Class[i].TeachTime + Class[i].PracticeTime) / 16;printf("请输入开课学期:");scanf("%s", Class[i].Semester);printf("请输入考核方式:");scanf("%s", Class[i].TextWay);printf("是否继续输入Y/N\n");fflush(stdin);scanf("%c",&c);switch (c){case 'Y':break;case 'N':t = 0;break;default:printf("输入错误\n");}}save();}/*******修改模块*******/void Modification()int n,i;printf("请输入您要修改的课程的记录编号：");scanf("%d", &n);for ( i = 0; i < 10; i++){if (Class[i].Number == n)break;}FILE*fp;if ((fp = fopen("Class.txt", "r")) == NULL){printf("cannot open file\n");exit(0);}fscanf(fp, "%d%d%s%f%f%f%s%s\n",&Class[i].Number,&Class[i].ClassNumber, Class[i].Name, &Class[i].TeachTime, &Class[i].PracticeTime, &Class[i].Credit, Class[i].Semester, Class[i].TextWay);printf("请输入要修改的课程的相关信息：\n");printf("请输入课程编号:");scanf("%d", &CL.ClassNumber);Class[i].Number=CL.ClassNumber;printf("请输入课程名:");scanf("%s", );strcpy(Class[i].Name,);printf("请输入讲课学时:");scanf("%f", &CL.TeachTime);Class[i].TeachTime=CL.TeachTime;printf("请输入实践学时:");scanf("%f", &CL.PracticeTime);Class[i].PracticeTime=CL.PracticeTime;CL.Credit = (CL.TeachTime+ CL.PracticeTime) / 16;Class[i].Credit=CL.Credit ;printf("请输入开课学期:");scanf("%s", CL.Semester);strcpy(Class[i].Semester,CL.Semester);printf("请输入考核方式:");scanf("%s", CL.TextWay);strcpy(Class[i].TextWay,CL.TextWay);save();fclose(fp);}/***********统计模块***********/void Statistics()int i,n1=0,n2=0;float m1=0,m2=0;FILE*fp;if ((fp = fopen("Class.txt", "r")) == NULL){printf("cannot open file\n");exit(0);}for ( i = 0; i < 10; i++){fscanf(fp, "%d%d%s%f%f%f%s%s\n",&Class[i].Number,&Class[i].ClassNumber, Class[i].Name, &Class[i].TeachTime, &Class[i].PracticeTime, &Class[i].Credit, Class[i].Semester, Class[i].TextWay);if (strcmp(Class[i].Semester,"春季")==0){n1++;m1= m1 + Class[i].Credit;}else if (strcmp(Class[i].Semester,"秋季")==0){n2++;m2 = m2 + Class[i].Credit;}}printf("春季学期总课程数为%d\n", n1);printf("春季学期总学分数为%f\n", m1);printf("秋季学期总课程数为%d\n", n2);printf("秋季学期总学分数为%f\n", m2);}/**********查询模块**************/void Query(){int i, k,a;float b;char m[10];FILE*fp;if ((fp = fopen("Class.txt", "r")) == NULL){printf("cannot open file\n");exit(0);}for (i= 0; i<10; i++)fscanf(fp, "%d%d%s%f%f%f%s%s\n",&Class[i].Number,&Class[i].ClassNumber, Class[i].Name, &Class[i].TeachTime, &Class[i].PracticeTime, &Class[i].Credit, Class[i].Semester, Class[i].TextWay);printf("查询模块：");printf("\n");printf("***********************************************\n");printf("* *\n");printf("* 1:课程编号2：课程学分*\n");printf("* *\n");printf("* 3:开课学期*\n");printf("* *\n");printf("***********************************************\n");printf("\n\n请输入查询选项：");scanf("%d", &k);for (; k<1 || k>4;){printf("请输入1到4之间的整数：");scanf("%d", &k);}if (k==1){printf("请输入要查询的课程编号：");scanf("%d", &a);for ( i = 0; i < 10; i++){if (Class[i].ClassNumber == a)break;}printf("记录编号：%d\n",Class[i].Number);printf("课程编号：%d\n",Class[i].ClassNumber);printf("课程名：%s\n",Class[i].Name);printf("讲课学时：%f\n",Class[i].TeachTime);printf("实践学时：%f\n",Class[i].PracticeTime);printf("学分：%f\n",Class[i].Credit);printf("开课学期：%s\n",Class[i].Semester);printf("考核方式：%s\n\n",Class[i].TextWay);}else if (k==2){printf("请输入要查询的课程的学分：");scanf("%f", &b);for ( i = 0; i < 10; i++){if (Class[i].Credit == b){printf("记录编号：%d\n",Class[i].Number);printf("课程编号：%d\n",Class[i].ClassNumber);printf("课程名：%s\n",Class[i].Name);printf("讲课学时：%f\n",Class[i].TeachTime);printf("实践学时：%f\n",Class[i].PracticeTime);printf("学分：%f\n",Class[i].Credit);printf("开课学期：%s\n",Class[i].Semester);printf("考核方式：%s\n\n",Class[i].TextWay);}}}else{printf("请输入要查询的开课学期：");scanf("%s", m);for ( i = 0; i < 10; i++){if (strcmp(Class[i].Semester,m)==0){printf("记录编号：%d\n",Class[i].Number);printf("课程编号：%d\n",Class[i].ClassNumber);printf("课程名：%s\n",Class[i].Name);printf("讲课学时：%f\n",Class[i].TeachTime);printf("实践学时：%f\n",Class[i].PracticeTime);printf("学分：%f\n",Class[i].Credit);printf("开课学期：%s\n",Class[i].Semester);printf("考核方式：%s\n\n",Class[i].TextWay);}}}}/**********添加模块*************/void Add(){int i;FILE*fp;if ((fp = fopen("Class.txt", "r")) == NULL){printf("cannot open file\n");exit(0);}for (i=0; i<10; i++){fscanf(fp, "%d%d%s%f%f%f%s%s\n",&Class[i].Number,&Class[i].ClassNumber, Class[i].Name, &Class[i].TeachTime, &Class[i].PracticeTime, &Class[i].Credit, Class[i].Semester, Class[i].TextWay);if (Class[i].Number == 0)break;}printf("请输入要添加的课程的相关信息：\n");printf("请输入记录编号:");scanf("%d", &Class[i].Number);printf("请输入课程编号:");scanf("%d", &Class[i].ClassNumber);printf("请输入课程名:");scanf("%s", Class[i].Name);printf("请输入讲课学时:");scanf("%f", &Class[i].TeachTime);printf("请输入实践学时:");scanf("%f", &Class[i].PracticeTime);Class[i].Credit = (Class[i].TeachTime + Class[i].PracticeTime) / 16;printf("请输入开课学期:");scanf("%s", Class[i].Semester);printf("请输入考核方式:");scanf("%s", Class[i].TextWay);save();}/********删除模块**********/void Delete(){int n,i;printf("请输入要删除的课程的课程编号：");scanf("%d", &n);FILE*fp;if ((fp = fopen("Class.txt", "r")) == NULL){printf("cannot open file\n");exit(0);}for ( i = 0; i < 10; i++){fscanf(fp, "%d%d%s%f%f%f%s%s\n",&Class[i].Number,&Class[i].ClassNumber, Class[i].Name, &Class[i].TeachTime, &Class[i].PracticeTime, &Class[i].Credit, Class[i].Semester, Class[i].TextWay);if (Class[i].ClassNumber == n)Class[i].Number = 0;Class[i].ClassNumber=0;Class[i].Credit = 0;strcpy(Class[i].Name, "0");Class[i].PracticeTime = 0;strcpy(Class[i].Semester, "0");Class[i].TeachTime=0;strcpy(Class[i].TextWay, "0");break;}}save();fclose(fp);}/*******显示模块**********/void Display(){FILE*fp;if ((fp = fopen("Class.txt", "r")) == NULL){printf("cannot open file\n");exit(0);}for (int i = 0; i<10; i++)fscanf(fp, "%d%d%s%f%f%f%s%s\n",&Class[i].Number,&Class[i].ClassNumber, Class[i].Name, &Class[i].TeachTime, &Class[i].PracticeTime, &Class[i].Credit, Class[i].Semester, Class[i].TextWay);for (i = 0; i < 10&&Class[i].Number!='\0'; i++){printf("记录编号：%d\n",Class[i].Number);printf("课程编号：%d\n",Class[i].ClassNumber);printf("课程名：%s\n",Class[i].Name);printf("讲课学时：%f\n",Class[i].TeachTime);printf("实践学时：%f\n",Class[i].PracticeTime);printf("学分：%f\n",Class[i].Credit);printf("开课学期：%s\n",Class[i].Semester);printf("考核方式：%s\n\n",Class[i].TextWay);}fclose(fp);}/**********退出模块*************/{exit(0);}/**********主函数*************/int main(){char c;while(1){int n;printf("*********************MENU********************\n");printf("* *\n");printf("* 1:课程信息输入2：课程信息修改*\n");printf("* *\n");printf("* 3:课程信息统计4：课程信息查询*\n");printf("* *\n");printf("* 5:课程添加6：课程信息删除*\n");printf("* *\n");printf("* 7:浏览8：退出*\n");printf("* *\n");printf("*********************************************\n");printf("\n\n请选择功能序号:");scanf("%d", &n);/*对选择的数字进行判断*/for (; n<1 || n>8;){printf("请输入1到8之间的整数：");scanf("%d", &n);}/*选择功能*/switch (n){case 1:Input(); Display(); break;case 2:Modification(); Display(); break;case 3:Statistics(); break;case 4:Query(); break;case 5:Add(); Display(); break;case 6:Delete(); Display(); break;case 7:Display();break;case 8:Quit();}printf("是否继续Y/N\n");fflush(stdin);scanf("%c",&c);if(c=='N')Quit();system("cls");}return 0;}。

c语言管理系统设计源代码以下是一个简单的C语言管理系统示例，用于管理学生信息。

该系统可以添加、删除、修改和查找学生信息。

c复制代码#include<stdio.h>#include<stdlib.h>#include<string.h>struct student {char name[50];int roll;float marks;};struct student students[100];int count = 0;void add_student() {struct student new_student;printf("Enter name: ");scanf("%s", new_);printf("Enter roll number: ");scanf("%d", &new_student.roll);printf("Enter marks: ");scanf("%f", &new_student.marks);students[count] = new_student;count++;}void delete_student() {int index;printf("Enter index of student to delete: ");scanf("%d", &index);for (int i = index; i < count - 1; i++) {students[i] = students[i + 1];}count--;}void modify_student() {int index;struct student new_student;printf("Enter index of student to modify: "); scanf("%d", &index);printf("Enter new name: ");scanf("%s", new_);printf("Enter new roll number: ");scanf("%d", &new_student.roll);printf("Enter new marks: ");scanf("%f", &new_student.marks);students[index] = new_student;}void find_student() {char name[50];printf("Enter name of student to find: "); scanf("%s", name);for (int i = 0; i < count; i++) {if (strcmp(students[i].name, name) == 0) { printf("Roll number: %d\n", students[i].roll); printf("Marks: %.2f\n", students[i].marks); return;}}printf("Student not found.\n");}int main() {int choice;do {printf("\nMenu:\n");printf("1. Add student\n");printf("2. Delete student\n");printf("3. Modify student\n");printf("4. Find student\n");printf("5. Exit\n");printf("Enter choice: ");scanf("%d", &choice);switch (choice) {case1: add_student(); break;case2: delete_student(); break;case3: modify_student(); break;case4: find_student(); break;case5: exit(0); break; // exit the program here, otherwise the loop will keep running indefinitely, as it is in the do-while loop above. We are not returning, but rather exiting the program completely, so we do not need to return anything. The return value of main is always 0, and this is how the program exits. If you want to return a value other than 0, you can do so like this: return 1; or return -1; or return any other integer value you want to represent an error condition. The operating system will interpret this as the program's exit status. In this case, it will be seen as successful, as it is returning 0. The return value of main is not used for anything in this program, but it can be used in other programs to determine whether the program exited successfully or with an error. For example, if you were writing a shell script that executed this program and needed to know if it was successful or not, you could check the return value of the program and act accordingly. This is a common practice in programming, and it is important to understand how it works so that you can use it effectively in your own programs.。

学籍管理系统一、系统简介设计一个基于结构体数组的学生学籍管理系统，能实现对学生学籍信息进行录入，修改，删除，查询和输出等基本操作二、需求分析学籍管理系统应该实现以下功能：1、能录入学生的基本信息，包括学号，姓名，专业，年级，性别和出生日期信息，保存到结构体数组中。

2、能根据输入的学号查询学生，进行信息的修改。

3、能根据输入的学号从结构体数组中删除学生的记录。

4、实现查询功能，能根据输入的学号或年级在屏幕上显示相应的学生信息。

5、能在屏幕上以列表的方式输出所有学生的信息。

三、概要设计1、系统功能根据项目的开发要求，本系统划分成六个主要功能模块：录入学生信息模块、修改学生信息模块、删除学生信息模块、查询学生信息模块、输出模块和推出模块。

系统功能机构图如下：2、重要数据的数据结构设计学生学籍的记录项用结构体Stu message表示，包括6个属性，stuno,name、spec、grade、sex、birthday 分另U代表学生的学号、专业、年级、性另U和出生日期，其中birthday 类型为自定义的结构体类型Date.Struct stumessage {Char stuno[11]: // 学号Char name[9]: // 姓名Char spec[2]: // 专业Char grade: // 年级Char sex : // 性别Stuct date birthday: // 出生日期}；日期类型date包括三个属性，分别代表年、月、日Struct date{int year : // 年Int month: //Int day: // H｝；3、函数设计学籍管理系统程序采用了结构化程序设计的思想，由1个.h 头文件和3个C源文件组成。

程序中除了主函数外，共设计了以下14个函数，分别包含在3个.c源文件中。

以下是这些函数原型及功能设计。

(1) void sysinfo(void)函数功能：在屏幕上输入系统及信息并等待用户响应。

学生管理系统c语言简单版学生管理系统c语言简单版介绍：学生管理系统是一种用于管理学生信息的软件，它可以方便地对学生的基本信息、课程成绩等进行录入、查询、修改和删除等操作。

本文将介绍如何使用C语言编写一个简单的学生管理系统。

功能：1. 添加学生信息2. 查询学生信息3. 修改学生信息4. 删除学生信息5. 显示所有学生信息实现方法：1. 添加学生信息添加学生信息需要输入以下内容：姓名、性别、年龄、班级和电话号码。

我们可以定义一个结构体来存储这些信息，代码如下：```struct Student {char name[20];char sex[10];int age;char class[20];char phone[20];};```然后定义一个数组来存储多个学生的信息：```struct Student students[100];int count = 0; // 学生数量```接下来，我们可以编写一个函数来添加新的学生信息：```void addStudent() {struct Student student;printf("请输入姓名：");scanf("%s", );printf("请输入性别：");scanf("%s", student.sex);printf("请输入年龄：");scanf("%d", &student.age);printf("请输入班级：");scanf("%s", student.class);printf("请输入电话号码：");scanf("%s", student.phone);students[count++] = student; // 将新的学生信息存储到数组中 printf("添加成功！\n");}```2. 查询学生信息查询学生信息可以按照姓名或电话号码进行查询。

C语言教务管理系统一、程序结构图二、程序运行截图1. 个人信息简介2.修改颜色3.注册界面4. 信息保存至文件5.登录界面6.管理员录入信息7. 学生信息录入8.学生成绩录入9.学生课程表录入10.学生信息查询界面11学生信息查询12.学生成绩查询13.学生课表查询三、代码（一个cpp）#include<stdio.h> #include<stdlib.h> #include<string.h> #include<ctype.h> #include <conio.h>#include"windows.h"#define student_num 1000 /*定义1000个学生*/#define teacher_num 5 /*定义5个老师（管理员）*/int is_my_student(struct student *p,int *size); /*声明返回第i+1个学生的函数*/ int is_my_teacher(struct teacher *p,int *size); /*声明返回第i+1个老师的函数*/ int length_student_name(char *p); /*声明验证用户名函数*/int length_student_password(char *p); /*声明验证密码长度函数*/int length_teacher_name(char *p); /*声明验证用户名函数*/int length_teacher_password(char *p); /*声明验证密码长度函数*/int show_menu_login(); /*声明登录菜单函数*/int show_menu_register(); /*声明注册菜单函数*/int show_teacher_select(); /*声明教师录入菜单函数*/int show_student_select(); /*声明学生查询菜单函数*/int student_register(struct student *ptr_student,int *size); /*声明学生注册函数*/ int teacher_register(struct teacher *ptr_teacher,int *size); /*声明老师注册函数*/ int vaild_student_name(char *p); /*声明验证用户名函数*/int vaild_student_password(char *p); /*声明验证密码函数*/int vaild_teacher_name(char *p); /*声明验证用户名函数*/int vaild_teacher_password(char *p); /*声明验证密码函数*/int vaild_two_password(char *p1,char *p2); /*声明验证两次密码是否相同函数*/ int yes_no_return(); /*声明选择是否返回上一层函数*/void load(); /*声明加载函数*/void register_(int *count1,int *count2); /*声明注册函数*/void display_student(struct student stu); /*声明显示学生信息函数*/void display_teacher(struct teacher tea); /*声明显示老师信息函数*/void student_file1(); /*将保存的学生的账号密码存入文件中*/ void student_file2(); /*将保存的学生的个人信息存入文件中*/ void student_file3(); /*将保存的学生的成绩存入文件中*/void teacher_file(); /*将保存的老师的账号密码存入文件中*/ void input_information(int count); /*声明输入学生信息函数*/void input_score_menu(int count); /*声明输入学生成绩函数*/void color(); /*声明选择窗体颜色函数*/void print_stu_information(int count_stu); /*声明输出账号为num的学生的信息函数*/void print_stu_score(int count_stu); /*声明输出账号为num的学生的成绩函数*/void show_menu(); /*声明初始化界面函数*/void input(); /*声明输入函数*/void menu1(); /*声明教师录入课程表主菜单函数*/void menu2(); /*声明学生查询课程表主菜单函数*/void rank(); /*声明显示时间顺序函数*/void querymenu3(); /*声明查询函数*/void looktime(); /*声明按照时间查询函数*/void looklessonname(); /*声明按照课程名查询函数*/void add(); /*声明保存函数*/void amend(); /*声明修改课程函数*/void amend1(); /*声明修改课程子函数*/void amendnews(int i); /*声明修改整个课程信息函数*/void amendtime(int i); /*声明修改课程时间函数*/void amendlessonname(int i); /*声明修改课程课程名函数*/void amendclassroom(int i); /*声明修改课程教室函数*/void deleted(); /*声明删除函数*/void add_score(int count); /*声明添加学生成绩函数*/void xiugai_score(int count); /*声明修改学生成绩函数*/void shanchu_score(int count); /*声明删除学生成绩函数*/void chaxun_score(int count); /*声明按要求查询学生成绩函数*/void paixu_score(int count); /*声明学生成绩排序函数*/void tongji_score(int count); /*声明学生成绩统计函数*/float chinese(int count); /*声明计算语文成绩最大值函数*/int chr(int count); /*声明计算语文成绩及格人数的函数*/ float english(int count); /*声明计算英语成绩最大值函数*/int ehr(int count); /*声明计算英语成绩及格人数的函数*/ float math(int count); /*声明计算数学成绩最大值函数*/int mhr(int count); /*声明计算数学成绩及格人数的函数*/ float computer(int count); /*声明计算计算机成绩最大值函数*/int thr(int count); /*声明计算计算机成绩及格人数的函数*/float PE(int count); /*声明计算体育成绩最大值函数*/int phr(int count); /*声明计算体育成绩及格人数的函数*/ float sum_score(int count); /*声明计算总分成绩最大值函数*/ void load_student(int a); /*声明启动学生函数*/void load_teacher(int a); /*声明启动老师函数*/struct student /*学生结构体*/{/*个人信息*/int student_id; /*账号*/char student_name[20]; /*姓名*/char password[16]; /*密码*/int age; /*年龄*/char qq[12]; /*QQ号*/char tel[12]; /*电话*/int grade; /*年级*//*各科成绩*/float chinese; /*语文分数*/float english; /*英语分数*/float math; /*数学分数*/float computer; /*计算机分数*/float PE; /*体育分数*/float sum; /*总分*//*课程表*/char time[10]; /*时间*/char lessonname[20]; /*课程名*/char teacher[20]; /*授课老师*/char classroom[10]; /*教室*/char hours[10]; /*第几节课*/int weeks; /*周时*/};struct teacher /*老师结构体*/ {int teacher_id; /*账号*/char teacher_name[20]; /*姓名*/char password[16]; /*密码*/};struct student our_student[student_num]; struct teacher our_teacher[teacher_num];void main() /*主函数*/{system("color f0"); /*初始化背景颜色*/show_menu(); /*制作人信息简介*/load();}void load() /*启动函数*/{int flag=1; /*控制循环结束的变量*/int a=0,b=0; /*记录已注册的学生的人数a为学生个数b为老师个数*/int *count1=&a,*count2=&b; /*指向学生人数和老师人数的指针*/int correct_student,correct_teacher;color();register_(count1,count2); /*注册学生和老师的帐号*/student_file1();teacher_file();while(flag){switch(show_menu_login()) /*显示登录菜单*/{case 1: /*选择1，进入学生登录*/if(correct_student=is_my_student(our_student,count1)){printf("\n ◆学生登录成功！\n");display_student(our_student[correct_student-1]);printf("\n");printf(" ");system("pause");load_student(a);}elseprintf("\n登录失败！\n");printf("\n");printf(" 提示：按Y退出登录界面，按N返回登录界面!!!\n");flag=yes_no_return();system("cls");break;case 2: /*选择2，进入老师登录，即管理员登录*/ if(correct_teacher=is_my_teacher(our_teacher,count2)){printf("\n ◆管理员登录成功！\n");display_teacher(our_teacher[correct_teacher-1]);printf("\n");printf(" ");system("pause");load_teacher(a);}elseprintf("\n登录失败！\n");printf("\n");printf(" 提示：按Y退出登录界面，按N返回登录界面!!!\n");flag=yes_no_return();system("cls");break;case 3: /*选择3，退出登录*/system("cls");flag=0;break;default:printf("请正确输入1-3：");system("cls");}}}void load_student(int a) /*启动学生函数*/{int flag=1;system("cls");while(flag){switch(show_student_select()){case 1: /*选择1，学生信息查询*/system("cls");print_stu_information(a);printf("\n");printf(" 提示：按Y退出学生查询界面，按N返回学生查询界面!!!\n");flag=yes_no_return();system("cls");break;case 2: /*选择2，学生成绩查询*/system("cls");print_stu_score(a);printf("\n");printf(" 提示：按Y退出学生查询界面，按N返回学生查询界面!!!\n");flag=yes_no_return();system("cls");break;case 3: /*选择3，学生课表查询*/menu2();printf(" 提示：按Y退出学生查询界面，按N返回学生查询界面!!!\n");flag=yes_no_return();system("cls");break;case 4: /*选择4，退出查询界面*/system("cls");flag=0;break;default:printf("请正确输入1-4：");system("cls");}}}void load_teacher(int a) /*启动老师函数*/{int flag=1;system("cls");while(flag){switch(show_teacher_select()){case 1: /*选择1，学生信息录入*/input_information(a);system("cls");student_file2();printf("\n 提示：按Y退出教师录入界面，按N返回教师录入界面!!!\n");flag=yes_no_return();system("cls");break;case 2: /*选择2，学生成绩录入*/input_score_menu(a);system("cls");student_file3();printf("\n 提示：按Y退出教师录入界面，按N返回教师录入界面!!!\n");flag=yes_no_return();system("cls");break;case 3: /*选择3，学生课表录入*/menu1();printf(" 提示：按Y退出教师录入界面，按N返回教师录入界面!!!\n");flag=yes_no_return();system("cls");break;case 4: /*选择4，退出管理界面*/system("cls");flag=0;break;default:printf("请正确输入1-4：");system("cls");}}}int length_student_name(char *p) /*验证用户名是否合法*/ {int l;l=strlen(p);if(l>20||l<1)return 0;elsereturn 1;}int vaild_student_name(char *p) /*判断用户名是否有效*/{int i=0;int len=strlen(p);if((*p>='a'&&*p<='z')||(*p>='A'&&*p<='Z')) /*判断首字母是不是字母*/ {for(i=0;i<len;i++){if(!(p[i]='_'||(p[i]>='a'&&p[i]<='z')||(p[i]>='A'&&p[i]<='Z')||(p[i]>='0'&&p[i]<=' 9'))) /*判断后面的字符是否有效*/return 0;}return 1;}elsereturn 0;}int length_student_password(char *p) /*密码长度有效性验证*/{int len;len=strlen(p);if(len<6||len>16)return 0;elsereturn 1;}int vaild_student_password(char *p) /*密码的有效性验证*/{int i=0;for(;*p!='\0';p++){if(!((*p>='a'&&*p<='z')||(*p>'A'&&*p<'Z')||(*p>='0'&&*p<='9'))) return 0;}return 1;}int vaild_two_password(char *p1,char *p2) /*验证两次密码是否相同*/{if(strcmp(p1,p2)==0)return 1;elsereturn 0;}int student_register(struct student *ptr_student,int *size) /*完成注册功能*/{char password[16];char repassword[16];if(*size==student_num){puts(" ◆注册人数已满！");printf("\n");return 0;}system("cls");printf("\n\n");printf(" ★请输入注册学生姓名：");fflush(stdin);gets(ptr_student[*size].student_name);if(!(length_student_name(ptr_student[*size].student_name)&&vaild_student_name(ptr_student[*size].student_name))){printf(" ◆您输入的姓名无效，学生姓名在1-20之间，首字符为字母，后面必须为字母、数字或下划线！！！");return 0;}printf("\n");printf(" ★请输入注册密码：");fflush(stdin);gets(password);printf("\n");printf(" ★请再次输入注册密码：");fflush(stdin);gets(repassword);printf("\n");if(!vaild_two_password(password,repassword)){printf("\n №:两次输入的密码不一致!!!");printf("\n");return 0;}elsestrcpy(ptr_student[*size].password,password);if(!(length_student_password(ptr_student[*size].password)&&vaild_student_pa ssword(ptr_student[*size].password))){printf(" ◆您输入的密码无效，密码应在6-16位之间，密码只能包含字母和数字!!!");printf("\n");return 0;}printf(" ★您的编号为：%d，这将是您的登录账号!!!",ptr_student[*size].student_id=20150000+*size);return 1;}int is_my_student(struct student *p,int *size) /*如果登录成功则返回第i+1个学生的信息，否则返回0*/{int i;int zhanghao;char mima[18];system("cls");printf("\n\n");printf(" ★请输入您的账号：");scanf("%d",&zhanghao);fflush(stdin);printf("\n");printf(" ★请输入您的密码：");gets(mima);for(i=0;i<*size;i++){if((zhanghao==p[i].student_id)&&(strcmp(mima,p[i].password)==0)) return i+1;}return 0;}void display_student(struct student stu) /*显示学生信息*/{printf("\n ★您的账号是：%d\n",stu.student_id);}int length_teacher_name(char *p) /*验证用户名是否合法*/{int l;l=strlen(p);if(l>20||l<1)return 0;elsereturn 1;}int vaild_teacher_name(char *p) /*判断用户名是否有效*/{int i=0;int len=strlen(p);if((*p>='a'&&*p<='z')||(*p>='A'&&*p<='Z')) /*判断首字母是不是字母*/ {for(i=0;i<len;i++){if(!(p[i]='_'||(p[i]>='a'&&p[i]<='z')||(p[i]>='A'&&p[i]<='Z')||(p[i]>='0'&&p[i]<=' 9'))) /*判断后面的字符是否有效*/return 0;}return 1;}elsereturn 0;}int length_teacher_password(char *p) /*密码长度有效性验证*/{int len;len=strlen(p);if(len<6||len>16)return 0;elsereturn 1;}int vaild_teacher_password(char *p) /*密码的有效性验证*/{int i=0;for(;*p!='\0';p++){if(!((*p>='a'&&*p<='z')||(*p>'A'&&*p<'Z')||(*p>='0'&&*p<='9'))) return 0;}return 1;}int teacher_register(struct teacher *ptr_teacher,int *size) /*完成注册功能*/{char password[16];char repassword[16];if(*size==teacher_num){puts(" ◆注册人数已满！");printf("\n");return 0;}system("cls");printf("\n\n");printf(" ★请输入注册教师姓名：");fflush(stdin);gets(ptr_teacher[*size].teacher_name);if(!(length_teacher_name(ptr_teacher[*size].teacher_name)&&vaild_teacher_na me(ptr_teacher[*size].teacher_name))){printf(" ◆您输入的姓名无效，教师姓名在1-20之间，首字符为字母，后面必须为字母、数字或下划线！！！");printf("\n");return 0;}printf("\n");printf(" ★请输入注册密码：");fflush(stdin);gets(password);printf("\n");printf(" ★请再次输入注册密码：");fflush(stdin);gets(repassword);printf("\n");if(!vaild_two_password(password,repassword)){printf("\n №:两次输入的密码不一致!!!");printf("\n");return 0;}elsestrcpy(ptr_teacher[*size].password,password);if(!(length_teacher_password(ptr_teacher[*size].password)&&vaild_teacher_password(ptr_teacher[*size].password))){printf(" ◆您输入的密码无效，密码应在6-16位之间，密码只能包含字母和数字！！！");printf("\n");return 0;}printf(" ★您的编号为：%d，这将是您的登录账号。

#i n c l u d e<s t d i o.h>#include<stdlib.h>#include<string.h>typedef struct{char num[15];char name[20];char credit[10];char clas[20];char teacher[20];}student;student pe[80];int menu_select(){char c;do{system("cls");printf("+---------------------------+\n");printf("| |\n");printf("| 欢迎使用课程信息管理系统|\n");printf("| |\n");printf("+---------------------------+\n");printf("\t\t *****课程信息管理系统***** \n");printf("\t\t ┌───────┐\n");printf("\t\t │1. 增加记录│\n");printf("\t\t │2. 显示记录│\n");printf("\t\t │3. 查询记录│\n");printf("\t\t │4. 修改记录│\n");printf("\t\t │5. 删除记录│\n");printf("\t\t │6. 存储记录│\n");printf("\t\t │0. 退出程序│\n");printf("\t\t └───────┘\n");printf("\t\t请您选择(0-6):");c=getchar();}while(c<'0'||c>'6');return(c-'0');}int Input(student per[],int n){int i=0;char sign,x[10];while(sign!='n'&&sign!='N'){printf("\t课程编号:");scanf("\t%s",per[n+i].num);printf("\t课程名称:");scanf("\t%s",per[n+i].name);printf("\t学分:");scanf("\t%s",per[n+i].credit);printf("\t选修课号:");scanf("\t%s",per[n+i].clas);printf("\t任课教师:");scanf("\t%s",per[n+i].teacher);gets(x);printf("\n\t是否继续添加?(Y/N)");scanf("\t%c",&sign);i++;}return(n+i);}void Display(student per[],int n){int i;printf("-------------------------------------------------------------------------------\n"); /*格式*/printf("课程编号课程名称学分选修课号任课教师\n");printf("-------------------------------------------------------------------------------\n");for(i=1;i<n+1;i++){printf("%-12s%-12s%-15s%-18s%s\n",per[i-1].num,per[i-1].name,per[i-1].credit,per[i-1].clas,per[i-1].teacher);if(i>1&&i%10==0){printf("\t-----------------------------------------\n");printf("\t");system("pause");printf("\t-----------------------------------------\n");}}printf("------------------------------------------------------------------------------\n");system("pause");}int Delete_a_record(student per[],int n) //删除学生记录函数{char s[20];int i=0,j;printf("\t请输入想删除记录中的课程编号:");scanf("%s",s);while(strcmp(per[i].num,s)!=0&&i<n) i++;if(i==n){printf("\t系统中没有此科目!\n");return(n);}for(j=i;j<n-1;j++){strcpy(per[j].num,per[j+1].num);strcpy(per[j].name,per[j+1].name);strcpy(per[j].credit,per[j+1].credit);strcpy(per[j]. clas,per[j+1]. clas);strcpy(per[j]. teacher,per[j+1]. teacher);}printf("\t\t\t已经成功删除!\n");return(n-1);}void Query_a_record(student per[],int n) //查询学生记录{int m;printf("\t\n请选择查询方式:\n");printf("\t┌─────----─┐\n");printf("\t│1------课程编号│\n");printf("\t│2------课程名称│\n");printf("\t│3------返回│\n");printf("\t└───--─--──┘\n");printf("请选择:");scanf("%d",&m);while(m!=1&&m!=2&&m!=3){printf("输入错误，请重新选择:");scanf("%d",&m);}if(m==1) // 按课程编号查询{char s[20];int i=0;printf("\t请输入想查询的课程编号:");scanf("\t%s",s);while(strcmp(per[i].num,s)!=0&&i<n) i++;if(i==n){printf("\t系统中没有这个科目!\n");return;}printf("\t课程名称: %s\n",per[i].name);printf("\t学分: %s\n",per[i]. credit);printf("\t选修课号: %s\n",per[i].clas);printf("\t任课教师: %s\n",per[i].teacher);} ;if(m==2) //按课程名称查询{char s[20];int i=0;printf("\t请输入想查询的课程名称:");scanf("\t%s",s);while(strcmp(per[i].name,s)!=0&&i<n) i++;if(i==n){printf("\t系统中没有该科目!\n");return;}printf("\t课程编号%s\n",per[i].num);printf("\t学分: %s\n",per[i].credit);printf("\t选修课号: %s\n",per[i].clas);printf("\t任课教师: %s\n",per[i].teacher);} ;}void Change(student per[],int n) //修改课程记录{char s[20];int i=0;printf("\t请输入想修改的课程信息管理系统中的课程编号:");scanf("%s",s);while(strcmp(per[i].num,s)!=0&&i<n) i++;if(i==n){printf("\t系统中没有该科目!\n");return;}printf("\t课程编号:");scanf("\t%s",per[i].num);printf("\t课程名称:");scanf("\t%s",per[i].name);printf("\t学分:");scanf("\t%s",per[i].credit);printf("\t选修课号:");scanf("\t%s",per[i].clas);printf("\t任课教师:");scanf("\t%s",per[i].teacher);printf("\t修改成功！");}void WritetoText(student per[],int n){int i=0;FILE *fp; //定义文件指针char filenum[20]; //定义文件名printf("\t保存到文件\n"); //输入文件名printf("\t请输入所保存的文件名:");scanf("\t%s",filenum);if((fp=fopen(filenum,"w"))==NULL){printf("\t无法打开文件\n");system("pause");return;}fprintf(fp,"****************************************** 课程信息管理系统**********************************\n");fprintf(fp," 课程编号课程名称学分选修课号任课教师\n");fprintf(fp,"------------------------------------------------------------------------------------------\n");while(i<=n){fprintf(fp,"%-10s%-10s%-15s%-18s%%s\n",per[i-1].num,per[i-1].name,per[i-1].credit,per[i-1].clas,per[i-1].teache r);i++;}fprintf(fp,"------------------------------------------------------------------------------------------\n");fprintf(fp,"***************************************共有%d条记录****************************************\n",n);fclose(fp); /*关闭文件*/printf("成功保存!!!\n");}int main(){int n=0;for(;;){switch(menu_select()){case 1:printf("\n\t请增加记录到系统\n");n=Input(pe,n);break;case 2:printf("\n\t\t\t 课程信息管理系统记录表\n");Display(pe,n);break;case 5:printf("\n\t从系统中删除记录\n");n=Delete_a_record(pe,n);printf("\t");system("pause");break;case 3:printf("\n\t在系统中查找记录\n");Query_a_record(pe,n);printf("\t");system("pause");break;case 4:printf("\n\t修改系统中的记录\n");Change(pe,n);printf("\t");system("pause");break;case 6:printf("\n\t保存功能\n");WritetoText(pe,n);printf("\t");system("pause");break;case 0:printf("\n\t\t谢谢您的使用，欢迎下次再来!!再见!!\n");printf("\n\t\t");system("pause");exit(0);}}return 0;}#include<stdio.h>#include<string.h>struct link{char cno[10],cname[10],cforecourse[10],cunitno[10],cunitname[10];int ia;struct link *next;};struct link *head;int menu(){int ii;printf("please choose a number:\n");printf("******************************************:\n");printf("1: create :\n");printf("2: search :\n");printf("3: delete :\n");printf("4: view :\n");printf("5: quit :\n");printf("******************************************:\n");printf("\n");printf("\n");printf("\n");printf("\n");scanf("%d",&ii);return ii;}struct link create(){int icount,ij=1;struct link *p,*new;while(1){if(icount){printf("输入头结点");}new=(struct link *)malloc(sizeof(struct link));printf("input the course no:\n");scanf("%s",new->cno);printf("input the course :\n");scanf("%s",new->cname);printf("input the forecourse :\n");scanf("%s",new->cforecourse);printf("input the course grade:\n");scanf("%d",&new->ia);printf("input the unit no. grade:\n");scanf("%s",new->cunitno);printf("input the unit name:\n");scanf("%s",new->cunitname);new->next=NULL;if(icount){head=new;p=new;printf("the fist add success:\n");getchar();getchar();icount=0;}e lse{p->next=new;printf("\n");p=p->next;printf("add success:\n");printf("\n");getchar();}p rintf("input 0 to end input:\n");scanf("%d",&ij);if(ij==0){break;}}}struct link search(){struct link *p;char ckeyname[10];p=head;printf("please input the name you want to view:\n");scanf("%s",ckeyname);while(strcmp(ckeyname,p->cname)!=0&&p->next!=NULL){p=p->next;}if(p->next==NULL){printf("no this position:\n");}else{printf("found it:\n");printf("%s,%s,%s,%d,%s,%s",p->cno,p->cname,p->cforecourse,p->ia,p->cunitno,p->cunitname);}}struct link delete(){struct link *p,*q,*r;char ckeyname[10];r=head;p=r->next;q=p->next;printf("please input the name you want to del:\n");scanf("%s",ckeyname);while(strcmp(ckeyname,p->cname)!=0&&r->next!=NULL){r=r->next;p=p->next;q=q->next;}if(r->next==NULL){printf("no this position:\n");}else{printf("found it:\n");printf("%s,%s,%s,%d,%s,%s",p->cno,p->cname,p->cforecourse,p->ia,p->cunitno,p->cunitname);r->next=p->next;printf("delete success:\n");getchar();getchar();}}void output(){struct link *p,*q;p=head;p=p->next;q=head;if(q->next==NULL){printf("no record:\n");}else{while(p->next){printf("%s,%s,%s,%d,%s,%s",p->cno,p->cname,p->cforecourse,p->ia,p->cunitno,p->cunitname);printf("\n");p=p->next;}printf("%s,%s,%s,%d,%s,%s",p->cno,p->cname,p->cforecourse,p->ia,p->cunitno,p->cunitname);}}void quit(){exit(0);}void main(){int ia=1;head=NULL;while(ia!=5){ia=menu();switch(ia){case 1:create();break;case 2:search();break;case 3:delete();break;case 4:output();break;case 5:quit();break;default:printf("input wrong:\n");}}}#include<stdio.h>#include<stdlib.h>#include<string.h>typedef struct{char num[15];char name[20];char credit[10];char clas[20];char teacher[20];}student;student pe[80];int menu_select(){char c;do{system("cls");printf("\n");printf("\n");printf(" 欢迎使用课程信息管理系统\n");printf("\n");printf("\n");printf(" 课程信息管理系统\n");printf("\n");printf(" 1. 增加记录\n");printf(" 2. 显示记录\n");printf(" 3. 查询记录\n");printf(" 4. 修改记录\n");printf(" 5. 删除记录\n");printf(" 6. 存储记录\n");printf(" 0. 退出程序\n");printf("\n");printf("\t\t请您选择(0-6):");c=getchar();}while(c<'0'||c>'6');return(c-'0');}int Input(student per[],int n){int i=0;char sign,x[10];while(sign!='n'&&sign!='N'){printf("\t课程编号:");scanf("\t%s",per[n+i].num);printf("\t课程名称:");scanf("\t%s",per[n+i].name);printf("\t学分:");scanf("\t%s",per[n+i].credit);printf("\t选修课号:");scanf("\t%s",per[n+i].clas);printf("\t任课教师:");scanf("\t%s",per[n+i].teacher);gets(x);printf("\n\t是否继续添加?(Y/N)");scanf("\t%c",&sign);i++;}return(n+i);}void Display(student per[],int n){int i;printf("-------------------------------------------------------------------------------\n"); /*格式*/printf("课程编号课程名称学分选修课号任课教师\n");printf("-------------------------------------------------------------------------------\n");for(i=1;i<n+1;i++){printf("%-12s%-12s%-15s%-18s%s\n",per[i-1].num,per[i-1].name,per[i-1].credit,per[i-1].clas,per[i-1].teacher);if(i>1&&i%10==0){printf("\t-----------------------------------------\n");printf("\t");system("pause");printf("\t-----------------------------------------\n");}}printf("------------------------------------------------------------------------------\n");system("pause");}int Delete_a_record(student per[],int n) //删除学生记录函数{char s[20];int i=0,j;printf("\t请输入想删除记录中的课程编号:");scanf("%s",s);while(strcmp(per[i].num,s)!=0&&i<n) i++;if(i==n){printf("\t系统中没有此科目!\n");return(n);}for(j=i;j<n-1;j++){strcpy(per[j].num,per[j+1].num);strcpy(per[j].name,per[j+1].name);strcpy(per[j].credit,per[j+1].credit);strcpy(per[j]. clas,per[j+1]. clas);strcpy(per[j]. teacher,per[j+1]. teacher);}printf("\t\t\t已经成功删除!\n");return(n-1);}void Query_a_record(student per[],int n) //查询学生记录{int m;printf("\t\n请选择查询方式:\n");printf("\\n");printf("1------课程编号\n");printf("2------课程名称\n");printf("3------返回\n");printf("\n");printf("请选择:");scanf("%d",&m);while(m!=1&&m!=2&&m!=3){printf("输入错误，请重新选择:");scanf("%d",&m);}if(m==1) // 按课程编号查询{char s[20];int i=0;printf("\t请输入想查询的课程编号:");scanf("\t%s",s);while(strcmp(per[i].num,s)!=0&&i<n) i++;if(i==n){printf("\t系统中没有这个科目!\n");return;}printf("\t课程名称: %s\n",per[i].name);printf("\t学分: %s\n",per[i]. credit);printf("\t选修课号: %s\n",per[i].clas);printf("\t任课教师: %s\n",per[i].teacher);} ;if(m==2) //按课程名称查询{char s[20];int i=0;printf("\t请输入想查询的课程名称:");scanf("\t%s",s);while(strcmp(per[i].name,s)!=0&&i<n) i++;if(i==n){printf("\t系统中没有该科目!\n");return;}printf("\t课程编号%s\n",per[i].num);printf("\t学分: %s\n",per[i].credit);printf("\t选修课号: %s\n",per[i].clas);printf("\t任课教师: %s\n",per[i].teacher);} ;}void Change(student per[],int n) //修改课程记录{char s[20];int i=0;printf("\t请输入想修改的课程信息管理系统中的课程编号:");scanf("%s",s);while(strcmp(per[i].num,s)!=0&&i<n) i++;if(i==n){printf("\t系统中没有该科目!\n");return;}printf("\t课程编号:");scanf("\t%s",per[i].num);printf("\t课程名称:");scanf("\t%s",per[i].name);printf("\t学分:");scanf("\t%s",per[i].credit);printf("\t选修课号:");scanf("\t%s",per[i].clas);printf("\t任课教师:");scanf("\t%s",per[i].teacher);printf("\t修改成功！");}void WritetoText(student per[],int n){int i=0;FILE *fp; //定义文件指针char filenum[20]; //定义文件名printf("\t保存到文件\n"); //输入文件名printf("\t请输入所保存的文件名:");scanf("\t%s",filenum);if((fp=fopen(filenum,"w"))==NULL){printf("\t无法打开文件\n");system("pause");return;}fprintf(fp,"****************************************** 课程信息管理系统**********************************\n");fprintf(fp," 课程编号课程名称学分选修课号任课教师\n");fprintf(fp,"------------------------------------------------------------------------------------------\n");while(i<=n){fprintf(fp,"%-10s%-10s%-15s%-18s%%s\n",per[i-1].num,per[i-1].name,per[i-1].credit,per[i-1].clas,per[i-1].teache r);i++;}fprintf(fp,"------------------------------------------------------------------------------------------\n");fprintf(fp,"***************************************共有%d条记录****************************************\n",n);fclose(fp); /*关闭文件*/printf("成功保存!!!\n");}int main(){int n=0;for(;;){switch(menu_select()){case 1:printf("\n\t请增加记录到系统\n");n=Input(pe,n);break;case 2:printf("\n\t\t\t 课程信息管理系统记录表\n");Display(pe,n);break;case 5:printf("\n\t从系统中删除记录\n");n=Delete_a_record(pe,n);printf("\t");system("pause");break;case 3:printf("\n\t在系统中查找记录\n");Query_a_record(pe,n);printf("\t");system("pause");break;case 4:printf("\n\t修改系统中的记录\n");Change(pe,n);printf("\t");system("pause");break;case 6:printf("\n\t保存功能\n");WritetoText(pe,n);printf("\t");system("pause");break;case 0:printf("\n\t\t谢谢您的使用，再见。