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644 lines
12 KiB
644 lines
12 KiB
#include<stdbool.h>
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#include<limits.h>
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#include<math.h>
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#include<stdlib.h>
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#include<conio.h>
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#include<Windows.h>
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#include<stdio.h>
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#include<string.h>
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unsigned int counts = 0;
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/*结构体定义*/
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typedef struct student {
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char no[21];
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char name[11];
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bool fame;
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unsigned short int age;
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char oth[151];
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struct student * next;
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}student;
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struct student * first = NULL;//第一个
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struct student * loc = NULL;//当前(一般为NULL)
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void input(void);//输入
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void print(void);//打印所有
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void print_1(const student *);//打印单个
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bool del(char *);//删除单个
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void creat(const student);//创造单个
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bool edit(char*);//编辑单个
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void save(void);//全部保存
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student * search_by_no(char *);//按学号查找
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void search_by_name(char *);//按名字搜索
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void search_by_sex(bool);//按性别搜索
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void search_by_age(unsigned short int);//按年龄搜索
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void show_menu(void);//显示菜单
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void exith(void);//退出(清理程序内容)
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bool check_password(void);//检查密码
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void run(void);//程序开始接入点
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bool load(void);//从文件加载数据
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void fgets_nn(char * , int, FILE *);//丢弃换行符的整行char*输入
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bool check_no(char *);//检查学号是否冲突
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int main() {
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run();
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system("pause");
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return 0;
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}
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void show_menu(void) {
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printf("a.学生基本信息录入\n");
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printf("b.学生基本信息显示\n");
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printf("c.学生基本信息保存\n");
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printf("d.学生基本信息删除\n");
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printf("e.学生基本信息修改\n");
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printf("f.学生基本信息查询\n");
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printf("g.退出系统\n");
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char t = getch();
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switch (t) {
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case 'a':
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input();
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show_menu();
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break;
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case 'b':
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system("cls");
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print();
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system("pause");
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system("cls");
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show_menu();
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break;
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case 'c':
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save();
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system("cls");
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printf("保存完成!\n");
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show_menu();
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break;
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case 'd':
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{
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char no_t[21];
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system("cls");
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print();
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printf("\n请输入要删除的学生的学号:\n");
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while (1) {
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fgets_nn(no_t, 21, stdin);
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if (!strcmp(no_t, "\0")) {
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printf("学号不能为空:\n");
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continue;
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}
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break;
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}
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if (del(no_t)) {
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system("cls");
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printf("删除成功!\n\n");
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}
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else {
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system("cls");
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printf("删除失败!不存在该学号的学生!\n\n");
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}
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show_menu();
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break;
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}
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case 'e':
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{
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char no_t[21];
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system("cls");
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if (!check_password()) {
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system("cls");
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printf("密码验证失败!\n");
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show_menu();
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}
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system("cls");
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print();
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printf("\n请输入要修改的学生的学号:\n");
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while (1) {
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fgets_nn(no_t, 21, stdin);
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if (!strcmp(no_t, "\0")) {
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printf("学号不能为空:\n");
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continue;
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}
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break;
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}
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if (edit(no_t)) {
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system("cls");
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printf("修改成功!\n\n");
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}
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else {
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system("cls");
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printf("修改失败!不存在该学号的学生\n\n");
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}
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show_menu();
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break;
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}
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case 'f':
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{
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system("cls");
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char mod;
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while (1) {
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printf("请输入模式:\n");
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printf("(1)按学号查询\n");
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printf("(2)按姓名查询\n");
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printf("(3)按性别查询\n");
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printf("(4)按年龄查询\n");
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mod = getch();
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if (mod - '0' < 1 || mod - '0'>4) {
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system("cls");
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printf("输入错误\n\n");
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continue;
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}
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system("cls");
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break;
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}
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switch (mod - '0') {
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case 1:
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{//建立一个块,防止case内定义被编译器报错
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char tem[21];
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printf("\n请输入要查询的学生的学号:\n");
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while (1) {
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fgets_nn(tem, 21, stdin);
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if (!strcmp(tem, "\0")) {
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system("cls");
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printf("学号不能为空,请输入要查询的学生的学号:\n");
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continue;
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}
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break;
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}
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student *ge = search_by_no(tem);
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if (ge == NULL) {
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printf("不存在该学号的学生!请检查输入的内容!\n");
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}
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else {
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system("cls");
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printf("查询到学号为%s的学生如下:\n\n", tem);
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print_1(ge);
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}
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break;
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}
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case 2:
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{
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char name[11];
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printf("请输入学生姓名:\n");
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do {
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fgets_nn(name, 11, stdin);
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} while (!strcmp(name, "\0"));
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search_by_name(name);
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break;
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}
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case 3:
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{
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bool fame;
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while (1) {
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printf("请输入学生性别(1.男 2.女):\n");
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char t = getch();
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if (t == '1') {
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fame = true;
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break;
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}
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else if (t == '2') {
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fame = false;
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break;
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}
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else {
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system("cls");
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printf("输入不正确,请重新输入学生性别(1.男 2.女):\n");
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continue;
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}
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}
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search_by_sex(fame);
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break;
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}
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case 4:
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{
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unsigned short int age;
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while (1) {
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printf("请输入学生年龄:\n");
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if (scanf("%hd", &age) != 1) {
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system("cls");
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printf("输入不正确,请重新输入学生年龄:\n");
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while (getchar() != '\n')continue;
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continue;
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}
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break;
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}
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search_by_age(age);
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break;
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}
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}
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system("pause");
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system("cls");
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show_menu();
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break;
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}
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case 'g':
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save();
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system("cls");
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printf("数据已保存,正在退出系统!\n");
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exith();
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break;
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default:
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system("cls");
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printf("输入错误!\n\n");
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show_menu();
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break;
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}
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}
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void input(void) {
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student temp;
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char t;
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while (1) {
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system("cls");
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printf("请输入学生学号,退出输入请直接回车:\n");
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while (1) {
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fgets_nn(temp.no, 21, stdin);
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if (!check_no(temp.no))
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printf("学号已存在!\n");
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else
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break;
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}
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if (!strcmp(temp.no, "\0")) {
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return;
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}
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printf("请输入学生姓名:\n");
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do {
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fgets_nn(temp.name, 11, stdin);
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} while (!strcmp(temp.name, "\0"));
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while (1) {
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printf("请输入学生性别(1.男 2.女):\n");
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t = getch();
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if (t == '1') {
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temp.fame = true;
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printf("男\n");
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break;
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}
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else if (t == '2') {
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temp.fame = false;
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printf("女\n");
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break;
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}
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else {
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printf("输入不正确\n");
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continue;
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}
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}
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while (1) {
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printf("请输入学生年龄:\n");
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if (scanf("%hd", &temp.age) != 1) {
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printf("输入不正确\n");
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while (getchar() != '\n')continue;
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continue;
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}
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break;
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}
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printf("备注:\n");
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while (getchar() != '\n')continue;
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fgets_nn(temp.oth, 151, stdin);
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creat(temp);
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system("pause");
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counts++;
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save();
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}
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}
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void creat(const student t) {
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if (first == NULL) {
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first = (student*)malloc(sizeof(student));
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loc = first;
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first->next = NULL;
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}
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else {
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loc->next= (student*)malloc(sizeof(student));
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loc = loc->next;
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loc->next = NULL;
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}
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loc->age = t.age;
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loc->fame = t.fame;
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int i=0;
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for(i=0;i<11&&t.name[i>0?i-1:0]!='\0';i++)
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loc->name[i] = t.name[i];
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for (i = 0; i < 21&&t.no[i > 0 ? i - 1 : 0] != '\0'; i++)
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loc->no[i] = t.no[i];
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for (i = 0; i < 151; i++)
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loc->oth[i] = t.oth[i];
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}
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void print(void) {
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student * l = first;
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printf("系统内共有%d名学生数据:\n\n", counts);
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while (l != NULL) {
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print_1(l);
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printf("\n");
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l = l->next;
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}
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}
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void print_1(const student * t) {
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printf("学号:%s\n", t->no);
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printf("姓名:%s\n", t->name);
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printf("性别:%s\n", t->fame ? "男": "女");
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printf("年龄:%d\n", t->age);
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printf("备注:%s\n", t->oth);
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}
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void exith(void) {
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student *l = first;
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student n;
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while (l != NULL) {
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n = *l;
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free(l);
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l = n.next;
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}
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printf("系统已退出!\n");
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system("pause");
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exit(1);
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}
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void run(void) {
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int n=3;
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while (n--) {
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if (check_password()) {
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load();
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show_menu();
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}
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else if(n!=0){
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printf("密码错误,你还有%d次机会!\n",n);
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}
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}
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printf("身份验证失败,正在退出系统\n");
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exith();
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}
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void save(void) {
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FILE * data;
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data = fopen("data", "w");
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student * l = first;
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while (l != NULL) {
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fprintf(data, "%s\n", l->no);
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fprintf(data, "%s\n", l->name);
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fprintf(data, "%d\n", l->fame);
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fprintf(data, "%d\n", l->age);
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fprintf(data, "%s\n", l->oth);
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l = l->next;
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}
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fclose(data);
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}
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bool load(void) {
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FILE * data;
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data = fopen("data", "r");
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if (data == NULL)
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return false;
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student temp;
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while (1) {
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fgets_nn(temp.no, 21, data);
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if (feof(data)){
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break;
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}
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fgets_nn(temp.name, 11, data);
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fscanf(data, "%hhu", &temp.fame);
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fscanf(data, "%hd", &temp.age);
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fgetc(data);//去除留下的\n
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fgets_nn(temp.oth, 151, data);
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creat(temp);
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counts++;
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}
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fclose(data);
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return true;
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}
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bool del(char * no) {
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student *ed = search_by_no(no);
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if (ed == NULL)
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return false;
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student temp;
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if (ed == first) {
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temp = *first;
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free(first);
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first = temp.next;
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return true;
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}
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student *lu = first;
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while (lu->next != NULL) {
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if (strlen(lu->next->no) == strlen(no) && !strcmp(lu->next->no, no)) {
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break;
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}
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lu = lu->next;
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}
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temp = *lu->next;
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free(lu->next);
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lu->next = temp.next;
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counts--;
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save();
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return true;
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}
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bool check_password(void) {
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FILE * password;
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password = fopen("password", "r");
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if (password == NULL) {
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printf("第一次进入系统,请先设置密码(最长16位,最短6位):\n");
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password = fopen("password", "w");
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system("attrib password +s +h +r");
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char pw[17];
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char pw2[17];
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while (1) {
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fgets_nn(pw, 17, stdin);
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if (strlen(pw) < 6) {
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system("cls");
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printf("密码至少设置6位:\n");
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continue;
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}
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system("cls");
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printf("请确认密码:\n");
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fgets_nn(pw2, 17, stdin);
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if (strcmp(pw, pw2)||(strlen(pw)!=strlen(pw2))) {
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system("cls");
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printf("密码确认错误,请重新设置密码:\n");
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continue;
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}
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break;
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}
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fprintf(password, "%s", pw);
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fclose(password);
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system("cls");
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return true;
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}
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char pw[17];
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fgets_nn(pw, 17, password);
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if (feof(password)) {
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fclose(password);
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system("attrib password -s -h -r");
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remove("password");
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return check_password();
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}
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printf("请输入密码:\n");
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char pwi[17];
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fgets_nn(pwi, 17, stdin);
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system("cls");
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if (!strcmp(pw, pwi))
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return true;
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else
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return false;
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}
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student * search_by_no(char * no) {
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student *l = first;
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while (l != NULL) {
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if (strlen(l->no) == strlen(no) && !strcmp(l->no, no)) {
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return l;
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}
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l = l->next;
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}
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return NULL;
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}
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void search_by_name(char * name) {
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student *l = first;
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unsigned int c = 0;
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system("cls");
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while (l != NULL) {
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if (strlen(l->name) == strlen(name) && !strcmp(l->name, name)) {
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print_1(l);
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printf("\n");
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c++;
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}
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l = l->next;
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}
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if (c == 0) {
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printf("未检索到内容!\n");
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}
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else {
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printf("\n已检索到%d条名字为%s的学生\n\n", c, name);
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}
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}
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void search_by_sex(bool fame) {
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student *l = first;
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unsigned int c = 0;
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system("cls");
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while (l != NULL) {
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if (l->fame == fame) {
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print_1(l);
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printf("\n");
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c++;
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}
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l = l->next;
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}
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if (c == 0) {
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printf("未检索到内容!\n");
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}
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else {
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printf("\n已检索到%d条性别为%s的学生\n\n", c, fame ? "男" : "女");
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}
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}
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void search_by_age(unsigned short int age) {
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student *l = first;
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unsigned int c = 0;
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system("cls");
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while (l != NULL) {
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if (l->age == age) {
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print_1(l);
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printf("\n");
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c++;
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}
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l = l->next;
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}
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if (c == 0) {
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printf("未检索到内容!\n");
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}
|
|
else {
|
|
printf("\n已检索到%d条年龄为%d的学生\n\n", c, age);
|
|
}
|
|
}
|
|
|
|
bool edit(char * no) {
|
|
student *l = search_by_no(no);
|
|
if (l == NULL)
|
|
return false;
|
|
|
|
printf("请输入学生学号:\n");
|
|
while (1) {
|
|
char no_temp[21];
|
|
fgets_nn(no_temp, 21, stdin);
|
|
if (!strcmp(no_temp, "\0")) {
|
|
printf("学号不能为空:\n");
|
|
continue;
|
|
}
|
|
if (!(strlen(l->no) == strlen(no_temp) && !strcmp(l->no, no_temp)))
|
|
if (!check_no(no_temp))
|
|
printf("学号已存在!\n");
|
|
else {
|
|
int i=0;
|
|
for ( i = 0; i < 21; i++)
|
|
l->no[i] = no_temp[i];
|
|
break;
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
printf("请输入学生姓名:\n");
|
|
do {
|
|
fgets_nn(l->name, 11, stdin);
|
|
} while (!strcmp(l->name, "\0"));
|
|
while (1) {
|
|
printf("请输入学生性别(1.男 2.女):\n");
|
|
char t = getch();
|
|
if (t == '1') {
|
|
l->fame = true;
|
|
break;
|
|
}
|
|
else if (t == '2') {
|
|
l->fame = false;
|
|
break;
|
|
}
|
|
else {
|
|
printf("输入不正确\n");
|
|
continue;
|
|
}
|
|
}
|
|
while (1) {
|
|
printf("请输入学生年龄:\n");
|
|
if (scanf("%hd", &l->age) != 1) {
|
|
printf("输入不正确\n");
|
|
while (getchar() != '\n')continue;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
printf("备注:\n");
|
|
while (getchar() != '\n')continue;
|
|
fgets_nn(l->oth, 151, stdin);
|
|
|
|
save();
|
|
return true;
|
|
}
|
|
|
|
void fgets_nn(char *buffer, int max, FILE * file) {
|
|
fgets(buffer, max, file);
|
|
int i=0;
|
|
for (i = 0; i < max; i++) {
|
|
if (buffer[i] == '\n') {
|
|
buffer[i] = '\0';
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool check_no(char * no) {
|
|
student *l = first;
|
|
while (l != NULL) {
|
|
if (strlen(l->no) == strlen(no) && !strcmp(l->no, no)) {
|
|
return false;
|
|
}
|
|
l = l->next;
|
|
}
|
|
return true;
|
|
}
|