登陆系统
#include <iostream>
#include <algorithm>
using namespace std;
int main(){
cout<<"hello ,world"<<endl;
string username,username1,username2;
string password,password1,password2,password3;
cout<<"注册用户中"<<endl;
cout<<"请输入密码(不能有字母,空格等:";
cin>>password;
cout<<"请再次确认您的密码";
cin>>password2;
if (password!=password2){
cout<<"您输入的密码与上一次不相符,请重新输入";
}
if (password==password2){
cout<<"现在请输入您的用户名:";
cin>>username;
}
cout<<"注册成功了,现在让我们试着登录一下吧!"<<endl;
cout<<"请输入用户名";
cin>>username1;
if (username1==username){
cout<<"请输入密码";
cin>>password1;
}
if (password1==password){
cout<<"登录成功";
}
if (password1!=password&&username!=username1){
cout<<"用户名或者密码不正确,请重新输入,或者输入1找回密码";
}else if (password1=="1"){
cout<<"找回密码中";
cout<<"请输入用户名";
cin>>username2;
if (username2==username){
cout<<"现在,请输入您的新密码";
cin>>password3;
cout<<"修改密码成功"<<endl;
cout<<"登陆中";
cout<<"请输入用户名";
cin>>username1;
if (username1==username){
cout<<"请输入密码";
cin>>password1;
}
if (username1!=username){
cout<<"用户名不正确";
}
if (password1==password){
cout<<"登录成功";
}
if (password1!=password){
cout<<"您输入的密码有误,请重新输入,由于您刚刚尝试找回密码,找回密码不可用";
}
}
}
return 0;
}