#include<iostream>
#include<fstream>
#include<string>
using namespace std;
void login()
{
     char npass[10];
     int i = 0;
     char user[10], name[10], newpass[10], oldpass[10];
     cout << "Enter user name: ";
     cin >> user;
     cout << "Enter password: ";
     ifstream file ("password.txt");
     if (file.is_open())
     {
		 std::getline(file, name);
		 std::getline(file, oldpass);
        if ((user == name) & (newpass == oldpass))
           cout << "Login successful!!!" << endl;
        else
            cout << "Wrong user name or password!!!" << endl;
     }
     cin.ignore();
}
int menu()
{
     int opt;
     do{
     cout << "1: Login\n2: Exit\nEnter an option: ";
     cin >> opt;
         switch(opt)
         {
                    case 1: login(); break;
                    case 2: break;
         }
         }while(opt != 2);
     return 0;
}
void newuser()
{
     char pass[10];
     int i = 0;
     char name[10];
     cout << "Welcome new user---" << endl
          << "Enter user name: ";
     cin >> name;
     cout << "Enter new password(6 characters): ";
     while(i < 6)
     {
             pass[i] = getch();
             cout << "*";
             i++;
     }
     cout << endl;
     ofstream file ("password.txt");
     file << name << endl;
     while (i < 6)
     {
           file << pass[i];
           i++;
     }
     file << '"' << endl;
     file.close();
     menu();
}
int main()
{
    ifstream file ("password.txt");
    file.open ("password.txt");
    if (file.is_open())
       menu();
    else
        newuser();
	return 0;
}