// xitong.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include <stdio.h>#include <string.h>#include <stdlib.h>int main(int argc, char* argv[]){ char user[10]; char passkey[10]; int xuan; int fanhuizhi; int cuowu char iduser[10]; char idkey[10]; char idput[10]; char keyput[10]; printf("****************************欢迎登录学生管理系统********************************\n"); printf("**********************************1.登录********************************\n"); printf("**********************************2.注册************************************\n"); printf("******************************请输入您的选项****************************\n"); scanf("%d",&xuan); switch(xuan) { case 1: { printf("请输入您的帐号\n"); scanf("%s",&iduser); FILE *fp; fp = fopen("E:\\class test\\0104\\xiangmu\\user.txt","r"); fgets(idput,2,fp); fanhuizhi = strcmp(idput, iduser); if(fanhuizhi ==0;) { printf("请输入您的密码\n"); scanf("%s",&idkey); FILE *fp; fp = fopen("E:\\class test\\0104\\xiangmu\\user.txt","r"); fgets(keyput,2,fp); fanhuizhi = strcmp(keyput, idkey); if(fanhuizhi ==0;) { printf("登录成功,欢迎使用!\n"); void zhucaidan(); zhucaidan(); } else if(int cuowu=3;cuowu>=0;cuowu--) { printf("登录失败,请重新输入!\n"); } } } else { printf("您输入的帐号不存在\n"); } } } break; } case 2: { printf("请输入您注册的帐号"); scanf("%s",&user); FILE *fp; fp = fopen("E:\\class test\\0104\\xiangmu\\user.txt","a"); fputs(user,fp); fclose(fp); printf("请输入您注册的密码"); scanf("%s",&passkey); fp = fopen("E:\\class test\\0104\\xiangmu\\user.txt","a"); fputs(passkey,fp); fclose(fp); printf("恭喜你,注册成功!\n"); void zhucaidan(); zhucaidan(); } } return 0;}void zhucaidan(){ printf("**********1、录入学生信息*********\n"); printf("**********2、显示学生信息*********\n"); printf("**********3、查询学生信息*********\n"); printf("**********4、修改学生信息*********\n"); printf("**********5、删除学生信息*********\n"); printf("**********6、退出管理系统*********\n");}麻烦大牛看看 我已经把viod函数声明在登录成功之后
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