登陆系统

[boypu123]

#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; }