LOGIN PAGE

 #include <iostream>

 using namespace std;

 class registration{

    public:

string userName;

string passWord;

registration(){

cout<<" Enter your username to register "<<endl;

cin>>userName;

cout<<" Enter your password to register "<<endl;

cin>>passWord;

}

 };

 class login:public registration{

public:

string a;

string b;

login(){

cout<<" enter username to login "<<endl;

cin>>a;

cout<<"enter password to login "<<endl;

cin>>b;

if(a==userName && b==passWord){

    cout<<" welcome sir "<<endl;

}else{

    cout<<" Invalid user id or password "<<endl;

}

}

 };

 int main() {

    login l;

 return 0;

 }