From 2ad93ed323a6b8eff49837e09cccd2513031cfdf Mon Sep 17 00:00:00 2001 From: pi9jl6p58 <1903771960@qq.com> Date: Sat, 29 Apr 2023 18:44:54 +0800 Subject: [PATCH] =?UTF-8?q?Delete=20'=E7=AE=A1=E7=90=86=E7=B3=BB=E7=BB=9Fd?= =?UTF-8?q?aima'?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- 管理系统daima | 354 ---------------------------------------------- 1 file changed, 354 deletions(-) delete mode 100644 管理系统daima diff --git a/管理系统daima b/管理系统daima deleted file mode 100644 index e51a7dd..0000000 --- a/管理系统daima +++ /dev/null @@ -1,354 +0,0 @@ -#define NAME_LEN 31 -#define MAX_PARTS 100 -//保存学生成绩信息的结构 -struct students -{ - int number; - char name[NAME_LEN + 1]; - int score; -}; -static struct students stu[MAX_PARTS]; -static int num_parts = 0; -#include -#include - -//定义常量 -#define CMD_QUIT 0 -#define CMD_QUERY 4 -#define CMD_INSERT 5 -#define CMD_UPDATE 6 -#define CMD_DELETE 7 -#define CMD_READ 1 -#define CMD_SAVE 2 -#define CMD_PRINT 3 -#define CMD_SORT 8 -#define CMD_CHART 9 -// 菜单命令的编号 - -// 函数声明 -void init(void); -void quit(void); -void display_menu(void); -int make_choice(void); -void read_data(void); // 读取 -void save_data(void); // 保存 -void print_data(void); // 打印 -void query_data(void); // 查询 -void add_data(void); // 添加 -void update_data(void); // 修改 -void delete_data(void); // 删除 -void sort_data(void); // 排序 -void make_chart(void); // 图表 -int confirm(const char *msg); - -// 主程序 -int main(void) -{ - init(); // 程序启动 - while (1) - { - display_menu(); - int c = make_choice(); - switch (c) - { - case CMD_QUERY: - query_data(); - break; - case CMD_INSERT: - add_data(); - break; - case CMD_UPDATE: - update_data(); - break; - case CMD_DELETE: - delete_data(); - break; - case CMD_READ: - read_data(); - break; - case CMD_SAVE: - save_data(); - break; - case CMD_PRINT: - print_data(); - break; - case CMD_SORT: - sort_data(); - break; - case CMD_CHART: - make_chart(); - break; - default: - puts("命令错误，请重新选择"); - break; - case CMD_QUIT: - if (confirm("确定要退出吗？")) - quit(); // 仅在确认后退出 - break; - } - } - return 0; -} - -// 函数定义 -void init(void) -{ - puts("程序启动"); -} -void quit(void) -{ - puts("程序退出"); - exit(EXIT_SUCCESS); -} -void display_menu(void) -{ - printf("\n%d 读取 | %d 保存 | %d 打印 | %d 查询 | %d 添加\n%d 修改 | %d 删除 | %d 排序 | %d 图表 | %d 退出\n\n", CMD_READ, CMD_SAVE, CMD_PRINT, CMD_QUERY, CMD_INSERT, CMD_UPDATE, CMD_DELETE, CMD_SORT, CMD_CHART, CMD_QUIT); -} -int make_choice(void) -{ - int c; // 用户输入 - int n = 0; // 正确读入的数据项个数 - while (n == 0) - { - printf("请选择："); - n = scanf("%d", &c); // 尝试读入整数 c - scanf("%*[^\n]"); // 跳过一行中剩余的字符 - } - return c; -} - -//查询 -void query_data(void) -{ - int num; - printf("输入学生学号： "); - scanf("%d", &num); - int f = -1; - for (int i = 0; i < num_parts; i++) - { - if (num == stu[i].number) - { - f = i; - break; - } - } - if (f == -1) - { - printf("学生不存在"); - } - else - { - printf("学生学号：%d\n", stu[f].number); - printf("学生姓名：%s\n", stu[f].name); - printf("学生成绩：%d\n", stu[f].score); - } -} - -//打印 -void print_data(void) -{ - printf("NUMBER | NAME score\n"); - for (int i = 0; i < num_parts; i++) - { - printf("%d | %s %d\n", stu[i].number, stu[i].name, stu[i].score); - } -} - -//添加 -void add_data(void) -{ - int num; - printf("输入学生学号："); - scanf("%d", &num); - int f = 0; - for (int i = 0; i < num_parts; i++) - { - if (num == stu[i].number) - { - f = 1; - break; - } - } - if (f == 0) - { - stu[num_parts].number = num; - printf("输入学生姓名："); - scanf("%s", &stu[num_parts].name); - printf("输入学生成绩："); - scanf("%d", &stu[num_parts].score); - num_parts++; - printf("学生 %d 添加成功\n", num); - } - else - { - printf("学生已存在"); - } -} - -//修改 -void update_data(void) -{ - int num; - printf("输入学生学号："); - scanf("%d", &num); - int f = 0; - for (int i = 0; i < num_parts; i++) - { - if (num == stu[i].number) - { - f = 1; - break; - } - } - if (f == 0) - { - printf("学生不存在"); - } - else - { - printf("输入学生学号："); - scanf("%d", &stu[num].number); - printf("输入学生姓名："); - scanf("%s", stu[num].name); - printf("输入学生成绩："); - scanf("%d", &stu[num].score); - printf("学生 %d 已更新", num); - } -} - -//删除 -void delete_data(void) -{ - int num; - printf("输入学生学号："); - scanf("%d", &num); - int f = 0, i, j; - for (i = 0; i < num_parts; i++) - { - if (num == stu[i].number) - { - f = 1; - break; - } - } - if (f == 0) - { - printf("学生不存在"); - } - else - { - for (j = i; j < num_parts - 1; j++) - { - stu[j] = stu[j + 1]; - } - num_parts--; - printf("删除成功"); - } -} - -void read_data(void) -{ - puts("读取数据"); - printf("请输入文件名"); - char filename[256]; - scanf("%s", filename); - - FILE *fp = fopen(filename, "r"); - if (fp == NULL) - { - perror(filename); - return; - } - int i = 0; - while (fscanf(fp, "%d,%[^,],%d", &stu[i].number, stu[i].name, &stu[i].score) == 3) - { - i++; - } - fclose(fp); - num_parts = i; - printf("读取 %d 记录\n", num_parts); -} - -void save_data(void) -{ - puts("保存数据"); - printf(" 请输入文件名"); - char filename[256]; - scanf("%s", filename); - FILE *fp = fopen(filename, "r"); - if (fp == NULL) - { - perror(filename); - return; - } - for (int i = 0; i < num_parts; i++) - { - fprintf(fp, "%d,%s,%d\n", stu[i].number, stu[i].name, stu[i].score); - } - fclose(fp); - printf("保存%d 成功", num_parts); -} - -//排序 -void sort_data(void) -{ - printf("排序\n"); - for (int i = 0; i < num_parts; i++) - { - int change = 0; - static struct students t; - for (int j = 0; j < num_parts - i - 1; j++) - { - if (stu[j].number > stu[j + 1].number) - { - t = stu[j + 1]; - stu[j + 1] = stu[j]; - stu[j] = t; - change = 1; - } - } - if (!change) - break; - } - for (int i = 0; i < num_parts; i++) - { - int change = 0; - static struct students t; - for (int j = 0; j < num_parts - i - 1; j++) - { - if (stu[j].score > stu[j + 1].score) - { - t = stu[j + 1]; - stu[j + 1] = stu[j]; - stu[j] = t; - change = 1; - } - } - if (!change) - break; - } - printf("排序已完成"); -} - -void make_chart(void) -{ - printf("NUMBER | NAME score\n"); - for (int i = 0; i < num_parts; i++) - { - printf("%d | %s ", stu[i].number, stu[i].name); - for (int j = 0; j < stu[i].score; j++) - { - printf("*"); - } - printf("\n"); - } - printf("图表\n"); -} - -int confirm(const char *msg) -{ - char c = 'n'; // 默认选择是 no - printf("%s(Y/N): ", msg); // 提示输入 yes/no 进行确认 - scanf(" %c%*[^\n]", &c); // 读取第一个字符，忽略剩余字符 - return c == 'y' || c == 'Y'; // 返回确认结果 -}