mirror of
https://github.com/yv1ing/Student-Information-Management-System.git
synced 2025-09-16 14:44:46 +08:00
102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
#include "stdio.h"
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#include "string.h"
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#include "windows.h"
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#include "stdlib.h"
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#include "../heads/for_function_module.h"
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#include "../heads/users.h"
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#include "../heads/secondary_menu.h"
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#include "../heads/registered_module.h"
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void login_module(){
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//登录界面
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system("cls");
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fflush(stdin);
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printf("------------------------------学生信息管理系统------------------------------\n\n");
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printf("-> 当前位置：登录\n\n");
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printf("-> 请输入账号：");
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//读取用户输入的账号
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char account_input[20];
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fflush(stdin);
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scanf("%s",&account_input);
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struct user *head,*p,*q;
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head=(struct user *) malloc(sizeof(struct user));
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q=head;
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//检索账号文件，读入内存
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FILE *fp;
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fp = fopen("../users/users.txt", "r");
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while (!feof(fp)){
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p=(struct user *)malloc(sizeof(struct user));
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fscanf(fp,"%s %s",&p->account,&p->password);
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q->next=p;
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q=p;
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}
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fclose(fp);
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p->next=NULL;
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//判断账号是否存在
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int account_exist=0;
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p=head->next;
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while (p!=NULL){
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//账号存在
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if(strcmp(account_input,p->account)==0){
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//读取用户输入的密码
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char password[20];
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int password_input_count=0;
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re_input_password:
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printf("-> 请输入密码：");
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fflush(stdin);
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scanf("%s",&password);
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//密码正确
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if(strcmp(password,p->password)==0){
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//跳转到二级菜单
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account_exist=1;
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secondary_menu();
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break;
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}
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//密码错误
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else{
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password_input_count++;
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if(password_input_count<3){
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printf("->密码错误！请重试！\n");
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fflush(stdin);
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goto re_input_password;
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}
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else{
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printf("->密码错误次数过多，请稍后再试。\n");
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fflush(stdin);
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Sleep(2000);
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main();
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}
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}
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}
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p=p->next;
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}
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//账号不存在
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if(account_exist!=1){
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re_input_whether_registered:
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printf("->账号不存在，是否现在注册？（y/n）");
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char whether_registered;
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fflush(stdin);
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scanf("%c",&whether_registered);
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switch (whether_registered) {
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//跳转到注册模块
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case 'y':{
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registered_module();
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break;
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}
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//返回主菜单
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case 'n':{
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main();
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}
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//输入不合法
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default:{
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printf("->输入不合法，请重新输入！\n");
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fflush(stdin);
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goto re_input_whether_registered;
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}
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}
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}
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} |