C语言期末/课程设计：学生证管理程序(vc2010项目)

#define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <stdlib.h> #include <math.h> #include <string.h> #include <conio.h> typedef struct data//定义包含学生证信息的结构体 { char name[ 10 ];//姓名 char sex[ 5 ];//性别 char number[50];//学号 char date[50];//入学时间 char xueyuan[ 50 ];//所属学院 char banji[ 50 ];//所属班级 struct data *next;//连接下一个结构体 }STUDENT; // 结构体存储班级和人数 typedef struct { char className[50]; int count; } ClassInfo; // 将链表内容存储到文件 void set(STUDENT *head) { STUDENT *current = head; FILE *file = fopen("Student.csv", "w"); if (file == NULL) { printf("错误，无法打开文件！\n"); return; } while (current != NULL) { fprintf(file, "%s,%s,%s,%s,%s,%s\n", current->name, current->sex, current->number, current->date, current->xueyuan, current->banji); current = current->next; } fclose(file); } // 初始化链表，返回头节点指针 STUDENT *initList() { STUDENT *head = (STUDENT *)malloc(sizeof(STUDENT)); if (head == NULL) { printf("错误，初始化失败!\n"); exit(EXIT_FAILURE); } head->next = NULL; // 确保头节点的指针指向NULL return head; } // 从文件中读取数据到链表 STUDENT *get() { STUDENT *head = initList();//初始化链表头 STUDENT *current = NULL; char line[255]; FILE *file = fopen("Student.csv", "r"); if (file == NULL) { printf("错误，无法打开文件！\n"); return NULL; } //逐行读取并添加到链表中 while (fgets(line, sizeof(line), file) != NULL) { STUDENT *newStudent = (STUDENT *)malloc(sizeof(STUDENT)); if (newStudent == NULL) { printf("内存分配错误！\n"); return NULL; } sscanf(line, "%[^,],%[^,],%[^,],%[^,],%[^,],%[^\n]", newStudent->name, newStudent->sex, newStudent->number, newStudent->date, newStudent->xueyuan, newStudent->banji); newStudent->next = NULL; if (current == NULL) { head = newStudent; // 第一个节点 current = head; } else { current->next = newStudent; current = newStudent; } } fclose(file); return head; } // 辅助函数，验证日期格式是否正确 int isValidDate(const char *date) { int year, month, day; if (sscanf(date, "%d/%d/%d", &year, &month, &day) == 3) { if (year >= 0 && month >= 1 && month <= 12 && day >= 1 && day <= 31) { return 1; // 日期格式正确 } } printf("错误，日期格式不正确！\n"); return 0; } // 辅助函数，检查学号是否唯一 int isUniqueNumber(STUDENT *head, const char *number) { STUDENT *current = head->next; while (current != NULL) { if (strcmp(current->number, number) == 0) { printf("错误！该学号已存在\n"); return 0; // 学号不唯一 } current = current->next; } return 1; // 学号唯一 } // 1.在链表末尾添加一条数据 void add(STUDENT *head) { // 创建新节点 STUDENT *newStudent = (STUDENT *)malloc(sizeof(STUDENT)); STUDENT *current = head;//链表尾 if (newStudent == NULL) { printf("内存分配错误。\n"); exit(EXIT_FAILURE); } printf("添加学信息\n"); // 获取用户输入 printf("请输入学生姓名："); scanf("%s", newStudent->name); printf("请输入学生性别："); scanf("%s", newStudent->sex); // 验证学号唯一性 do { printf("请输入学生学号："); scanf("%s", newStudent->number); } while (!isUniqueNumber(head, newStudent->number)); // 验证日期格式正确性 do { printf("请输入学生入学日期（格式：2022/10/1）："); scanf("%s", newStudent->date); } while (!isValidDate(newStudent->date)); printf("请输入学生所属学院："); scanf("%s", newStudent->xueyuan); printf("请输入学生所属班级："); scanf("%s", newStudent->banji); newStudent->next = NULL; // 找到链表末尾并添加新节点 if(head==NULL){ head=newStudent; }else{ while (current->next != NULL) { current = current->next; } } current->next = newStudent; printf("学生信息添加成功。\n"); } // 2.根据学号查找学生信息并打印 void find(STUDENT *head) { STUDENT *current = head; char number[50]; printf("查询个人学信息\n"); printf("请输入要查找的学号："); scanf("%s", number); while (current != NULL) {//遍历查询 if (strcmp(current->number, number) == 0) { printf("学生信息找到：\n"); printf("姓名：%s\n性别：%s\n学号：%s\n入学日期：%s\n所属学院：%s\n所属班级：%s\n", current->name, current->sex, current->number, current->date, current->xueyuan, current->banji); return; } current = current->next; } printf("未找到学号为 %s 的学生信息。\n", number); } //3.根据班级查找学生信息 void findClass(STUDENT *head){ STUDENT *current = head; char banji[50]; int flag=0;//判断存在条件 printf("查询班级学生信息\n"); printf("请输入要查找的班级："); scanf("%s", banji); while (current != NULL) {//遍历查询 if (strcmp(current->banji, banji) == 0) { printf("-------------------------------------------------------------------------\n"); printf("姓名：%s\n性别：%s\n学号：%s\n入学日期：%s\n所属学院：%s\n所属班级：%s\n", current->name, current->sex, current->number, current->date, current->xueyuan, current->banji); flag=1; } current = current->next; } if(flag==0){ printf("未找到班级为 %s 的学生信息。\n", banji); } } // 4.根据学号修改学生信息 void changedata(STUDENT *head) { STUDENT *current = head->next; char number[50]; int operation; printf("修改学信息\n"); // 获取用户输入 printf("请输入要修改信息的学生学号："); scanf("%s", number); // 查找学生信息 while (current != NULL) { if (strcmp(current->number, number) == 0) { // 学生信息找到，接收用户输入的操作编号 printf("学生信息找到，请选择要修改的操作：\n"); printf("1. 修改姓名\n2. 修改性别\n3. 修改入学日期\n4. 修改所属学院\n5. 修改所属班级\n"); printf("请输入操作编号："); scanf("%d", &operation); switch (operation) { case 1: printf("请输入新的姓名："); scanf("%s", current->name); printf("姓名修改成功。\n"); break; case 2: printf("请输入新的性别："); scanf("%s", current->sex); printf("性别修改成功。\n"); break; case 3: do { printf("请输入新的入学日期（格式：2022/10/1）："); scanf("%s", current->date); } while (!isValidDate(current->date)); printf("入学日期修改成功。\n"); break; case 4: printf("请输入新的所属学院："); scanf("%s", current->xueyuan); printf("所属学院修改成功。\n"); break; case 5: printf("请输入新的所属班级："); scanf("%s", current->banji); printf("所属班级修改成功。\n"); break; default: printf("无效的操作编号。\n"); break; } return; } current = current->next; } printf("未找到学号为 %s 的学生信息，无法进行修改。\n", number); } // 5.删除指定学号的学生数据 void deldata(STUDENT *head) { STUDENT *current = head; STUDENT *prev = NULL; char number[50]; printf("删除学信息\n"); printf("请输入要删�